solomon islands technical report

EU EDF 8/9 - SOPAC Project Report 113 Reducing Vulnerability of Pacific ACP States

SOLOMON ISLANDS TECHNICAL REPORT HIGH-RESOLUTION BATHYMETRY SURVEY OF SOLOMON ISLANDS

Fieldwork undertaken from 14 June to 29 July 2005

September 2008

Three-dimensional perspective image of bathymetry of Noro, Solomon Islands.

Prepared by:

Jens Krüger and Ashishika Sharma

SOPAC Secretariat

July, 2008

PACIFIC ISLANDS APPLIED GEOSCIENCE COMMISSION

c/o SOPAC Secretariat

Private Mail Bag

GPO, Suva

FIJI ISLANDS

http://www.sopac.org

Phone: +679 338 1377

Fax: +679 337 0040

www.sopac.org

[email protected]

Important Notice

This report has been produced with the financial assistance of the European Community; however, the views expressed herein must never be taken to reflect the official opinion of the

European Community.

Solomon Islands Bathymetry EU EDF-SOPAC Reducing Vulnerability of Pacific ACP States – iii

EU-SOPAC Project Report 113 - Krüger and Sharma

Figure 1. Location map of Pacific Island countries and territories constituting SOPAC.

iv – Solomon Islands Bathymetry EU EDF-SOPAC Reducing Vulnerability of Pacific ACP States


TABLE OF CONTENTS

EXECUTIVE SUMMARY 1 1. INTRODUCTION 2

1.1 Background 2 1.2 Geological Setting 3 1.3 Previous Bathymetry Compilations 4

2. RESULTS – BATHYMETRY AND DERIVATIVES 5 3. DATA ACQUISITION AND PROCESSING 13

3.1 Fieldwork Summary 13 3.2 Field Personnel 13 3.3 Geodetic Reference System 14 3.4 Vessel Description and Static Offsets 15 3.5 Positioning Control 16 3.6 Survey Computer 16 3.7 Multibeam Echo Sounder 16 3.8 Multibeam Echo Sounder Data Processing 17 3.9 Multibeam backscatter 18 3.10 Tidal Information 18 3.11 Speed-of-sound profiling 20

4. REFERENCES 25 APPENDICES 27

Appendix 1 – Statement of Accuracy and Suitability for Charting 27 Appendix 2 – Multibeam Echosounder Coverage 32 Appendix 3 – High-resolution A0 Charts, Solomon Islands 36 Appendix 4 – Line logs 37

Solomon Islands Bathymetry EU EDF-SOPAC Reducing Vulnerability of Pacific ACP States – v


LIST OF FIGURES

Figure 1. Location map of Pacific Island countries and territories constituting SOPAC. iii Figure 2. Bathymetric map of the Solomon Islands. 2 Figure 3. Tectonic microplates of the Melanesian region. 4 Figure 4. Three-dimensional perspective image of the forereef slope area, Gizo. 6 Figure 5. Three-dimensional perspective image of Honiara bathymetry looking north. 6 Figure 6. Shaded relief bathymetric map of Gizo. 6 Figure 7. Slope angle map for Gizo. 6 Figure 8. Shaded relief bathymetric map of Honiara. Sun illumination is from the NW. 7 Figure 9. Slope angle map for Honiara bathymetry. 7 Figure 10. Shaded relief map of Marovo bathymetry. 8 Figure 11. Three-dimensional map of Marovo bathymetry looking toward the northeast. 9 Figure 12. Slope angle map of Marovo bathymetry. 10 Figure 13. Shaded relief map of Noro bathymetry. 11 Figure 14. Three-dimensional map of Noro bathymetry. 11 Figure 15. Slope angle map of Noro bathymetry. 12 Figure 16. The chartered survey vessel RV Summer Spirit. 16 Figure 17. SEAFRAME tide gauge datum definition and other geodetic levels at Honiara. 19 Figure 18. Plot showing an example sound velocity profile used for MBES data correction. 22 Figure 19. Map showing the location of CTD and GDEM profiles at Honiara. 23 Figure 20. Map showing the location of CTD and GDEM profiles at Marovo. 23 Figure 21. Map showing the location of CTD and GDEM profiles at Gizo. 24 Figure 22. Map showing the location of CTD and GDEM profiles at Noro. 24 Figure A1.1. Conceptual illustration of bathymetric data acquisition with an MBES. 28 Figure A2.1. Honiara coverage. 32 Figure A2.2. Gizo coverage. 32 Figure A2.3. Noro coverage. 33 Figure A2.4. Marovo coverage. 33

vi – Solomon Islands Bathymetry EU EDF-SOPAC Reducing Vulnerability of Pacific ACP States


Acronyms used and their meaning

ACP African, Carribean, and Pacific

ADV Acoustic Doppler velocimeter

ARGO Array for real-time geostrophic oceanography

ASCII American standard code for information interchange

CD Chart datum

CTD conductivity – temperature – depth

DTM Digital terrain model

EEZ Exclusive economic zone

EU European Union

GDEM Generalised digital environmental model

GEBCO General bathymetry chart of the oceans

GPS Global positioning system

LAT Lowest astronomical tide

MBES Multibeam echosounder

MRU Motion reference unit

MSL Mean sea level

NOAA National Oceanic and Atmospheric Administration

PI-GOOS Pacific Islands Global Ocean Observing System

RTK Real-time kinematic

S2004 Global bathymetry grid merging GEBCO and predicted depths from satellite altimeter measurements.

SOPAC Pacific Islands Applied Geoscience Commission

TAO Tropical atmosphere ocean array

UTC Universal time co-ordinated (Greenwich meridian time, GMT)

UTM Universal transverse Mercator

WGS World geodetic system

Solomon Islands Bathymetry EU EDF-SOPAC Reducing Vulnerability of Pacific ACP States – 1


EXECUTIVE SUMMARY

Krüger, J. and Sharma A. 2008: High-Resolution Bathymetric Survey of Solomon Islands. EU EDF 8 – SOPAC Project Report 113. Pacific Islands Applied Geoscience Commission: Suva, Fiji, vi + 52 p. + 4 charts.

This report describes a high-resolution bathymetric mapping survey of the seabed in the nearshore areas of Gizo, Honiara, Marovo and Noro in the Solomon Islands, by the Pacific Islands Applied Geoscience Commission (SOPAC). The survey was carried out over a period of six weeks in June and July 2005, resulting in the acquisition of over 1 535 km of multibeam echosounder (MBES) data.

The resultant data was used to produce bathymetry charts of Gizo at 1:25 000, Honiara at 1:75 000, Marovo at 1:50 000, and Noro at 1:25 000. These new maps give a descriptive picture of the ocean bottom terrain, vividly revealing the size, shape and distribution of underwater features. This can serve as the basic tool for scientific, engineering, marine geophysical and environmental studies, as well as marine and coastal resource management.

2 – Solomon Islands Bathymetry EU EDF-SOPAC Reducing Vulnerability of Pacific ACP States


1. INTRODUCTION

1.1 Background

This report describes a high-resolution bathymetric mapping survey of the seabed surrounding the islands of Gizo, Honiara, Marovo and Noro in the Solomon Islands (Figure 2). The survey was carried out over a period of six weeks in June and July 2005, resulting in the acquisition of over 1 535 km of multibeam echosounder (MBES) data. Maps detailing the seabed coverage achieved during the survey are appended to the report. This work was initiated by the Pacific Islands Applied Geoscience Commission (SOPAC) and European Union (EU) Reducing Vulnerability of Pacific ACP States Project.

The wave and current regime at selected sites at Honiara, Marovo lagoon, Noro and Gizo was also investigated through the deployment of acoustic Doppler current profilers. This report presents the results of the MBES survey; the oceanographic data are covered elsewhere. In addition to the bathymetric maps presented in this report and their relevance to the SOPAC/EU project, it is envisaged that data from the survey will be used to support activities in fisheries, mineral exploration, coastal management, and geo-hazard studies.

156°E 158°E 160°E 162°E 164°E 166°E 168°E 170°E 172°E

16°S

14°S

12°S

10°S

8°S

6°S

4°S

Gizo

Honiara

Marovo

NoroSOLOMON

ISLANDS

Figure 2. Bathymetric map (S2004 1-minute grid as described in Marks and Smith 2006) of the Solomon Islands showing the islands (brown); water depth is shown in light to dark blue (shallow to deep). Boxes illustrate the location of the survey areas. The 200 nautical mile boundary of the exclusive economic zone, EEZ (dashed line), is indicative only.

The Solomon Islands comprises the third largest archipelago in the South Pacific. The country consists of a double chain of volcanic islands with six major island groups: New Georgia, Guadalcanal and Makira to the south; and Choiseul, Isabel and Malaita in the northern group. Guadalcanal is the major island and the location of Honiara, the capital. There are some 992 islands, atolls and cays that compose the Solomon Islands, the total land area of which is 28 785 km2 scattered in an Exclusive Economic Zone (EEZ) of approximately 600 000 km2.



Selected geographic facts about the islands are listed in the table below.

Geography of Solomon Islands

Location From 4º to 16º S and from 155º to 173º E

Population 409 042 (1999 estimate: SOPAC 2007)

Land area Total is about 28 785 km2 with a maximum elevation of 2447 m (Mt Makarakombou on Guadalcanal)

Tides Semi-diurnal with a spring and neap range of 0.7 m and 0.5 m, respectively (Nautical chart NZ845)

Climate

Tropical, modified by the oceanic environment from April to November followed by a wet season from December to March. Mean temperature is 26 ºC and rainfall ranges from 3000–3500 mm per annum

Exclusive economic zone Approximately 600 000 km2 in the central Pacific

1.2 Geological Setting

The Solomon lslands archipelago is a fragmented island arc situated along the boundary between the Ontong Java Plateau-Central Pacific Basin and the Solomon Sea-Woodlark-Torres Basins, covering more than 900 km between longitudes 154°E and 163°E and 650 km between latitudes 5°S and 11°S.

The total land area of the Solomons is estimated to be about 27 785 km2 (Vedder and Coulson 1984). Most of the larger islands have steep relief and are covered by tropical rain forest (Vedder and Coulson 1984).

The six large islands of Choiseul, New Georgia, Santa Isabel, Guadacanal, Malaita, and San Cristobal form two chains that are separated by New Georgia Sound at the northwest and Indispensable Strait at the southeast (Vedder and Coulson 1986). Although the stratigraphic sequences and rock compositions vary from island to island and show local complexities, regional correlations indicate an orderly pattern of island-arc genesis from northeast to southwest across the archipelago (Vedder and Coulson 1986).

The Central Solomons Trough is 475 km long, 90 km wide and 1800 m deep. It is a composite basin which separates the two chains of large islands that form the main part of the Solomon archipelago (Vedder 1986). A discontinuous, nearly linear trench runs south of the island chains; the western part of this is known as the New Britain trench while the eastern part is known as the South Solomon Trench (Vedder 1986). A less well-defined trench system, including the West Melanesian Trench, North Solomon Trench, Cape Johnson Trench, and Vitiaz Trench runs to the north and east of the archipelago () (Vedder 1986).

Seismic refraction studies suggest a linear, block-like character for the Solomons and a crustal thickness ranging from 15 to 20 km (Vedder 1986).



Massive and pillowed tholeiitic basalt and its metamorphosed counterparts constitute the basement rocks of the Solomon Islands (Vedder 1986). Other igneous rocks include intrusions of gabbro and diabase; volcaniclastic strata are a minor constituent. Subsequent subduction, extension, uplift and erosion have created 6 km of sedimentary section above the basement (Vedder 1986).

1.3 Previous Bathymetry Compilations

Bathymetric maps are topographic maps of the sea floor, giving a descriptive picture of the ocean bottom terrain. With an EEZ of approximately 600 000 km2, the available bathymetric data is limited, and the exact nature of the seafloor is poorly known. Tolia (1993) provides a review of the available bathymetric data from oceanographic cruises for the period 1972 to 1993. Most bathymetric data originates from sparse single beam echosounder (SBES) soundings (e.g. Carter 1984), and, since the early 1990s, from MBES systems (e.g. IFREMER 1994) as well as satellite-derived predicted depth (overview in Marks and Smith, 2006). The chart of Marovo includes some SBES data acquired by the University of Queensland, while the chart of Honiara incorporates data acquired by RV l'Atalante using a Simrad EM12 multibeam system, during the SOPACMAPS Project, Leg 2, 19 August to 16 September, 1993 (IFREMER 1994).

Figure 3. Tectonic microplates of the Melanesian region. Arrows show net plate motion relative to the Australian Plate (US Geological Survey 2007).



2. RESULTS – BATHYMETRY AND DERIVATIVES

The processed MBES data for the surveyed areas of Honiara, Marovo, Noro, and Gizo were compiled into bathymetric charts with scales of 1:75 000, 1:50 000, 1:50 000, and 1:25 000, respectively. The charts are appended to this report (charts ER113.1 to ER113.4); the underlying bathymetric grid files and metadata used to produce the charts are also available through the SOPAC GeoNetwork site.

Bathymetric data provide information on the depth and morphology of the seafloor, as well as the shape and size of submarine features. Three bathymetry derivatives namely, slope angle maps, shaded relief maps, and three-dimensional rendered surfaces, aid the visual interpretation of the seabed features. These derivatives are described in more detail in the table below, and the resulting maps are shown in the figures below as well as insets on the A0-sized charts enclosed with this report.

Bathymetric Derivatives

Slope angle Slope is a measure of steepness between locations on the seabed, and are reported in degrees from zero (horizontal). Slope values are computed as a mean value for one grid cell from the slope gradient between it and the eight neighbouring grid cells.

Shaded relief Shaded relief maps use shades of grey to indicate the local orientation of the seafloor relative to a user-defined light source direction. The light source can be thought of as the sun shining on a topographic surface, much like artificial hillshading that illuminates bathymetric roughness. Portions of the surface that face away from the light source reflects less light toward the viewer, and thus appear darker.

Three-dimensional surface For three-dimensional surfaces the height of the surface corresponds to the depth of the seafloor.

Figure 4. Three-dimensional perspective image of the forereef slope area, Gizo, looking toward the south, and showing Reson 8160 data only. Depth is shallow to deep from red to blue.

Figure 5. Three-dimensional perspective image of Honiara bathymetry looking north. Depth is in metres.



Figure 6. Shaded relief bathymetric map of Gizo. Sun’s illumination is from the northwest. Land is in grey and the coastline is outlined in black.

Figure 7. Slope angle map for Gizo. Land is shown in grey, and slope angles are horizontal to steep from blue to red. Scale bar is in metres.



Figure 8. Shaded relief bathymetric map of Honiara. Sun illumination is from the northwest. Land is in grey.

Figure 9. Slope angle map for Honiara bathymetry. Land is shown in grey.



Figure 10. Shaded relief map of Marovo bathymetry. Sun illumination is from the northwest. Land is in grey with a black coastline. Scale bar is in metres.



Figure 11. Three-dimensional map of Marovo bathymetry looking toward the northeast. Depth is shallow to deep from red to blue.



Figure 12. Slope angle map of Marovo bathymetry. Land is in grey with a black coastline. Scale bar is in metres, and angles are horizontal to steep from blue to red.



Figure 13. Shaded relief map of Noro bathymetry. Sun’s illumination is from the northwest. Land is in grey with a black coastline. Scale bar is in metres.

Figure 14. Three-dimensional map of Noro bathymetry. Land is in grey. Depths from shallow to deep and shown as red to blue. Scale bar is in metres.



Figure 15. Slope angle map of Noro bathymetry. Land is shown in grey with a black coastline. Scale bar is in metres, and angles are steep to horizontal from red to blue.



3. DATA ACQUISITION AND PROCESSING

3.1 Fieldwork Summary

Survey Particulars

Survey vessel MV Summer Spirit

Fieldwork dates 14 June 2005 to 29 July 2005

Equipment used Reson 8160 and 8101 MBES

All dates and times in this report are given in the local Solomon Islands time zone (12:00h GMT = 24:00h local). Fieldwork dates and information on the equipment used during the different phases of the survey are listed in the table below.

Location Survey Dates Equipment Used

Gizo 17/07/2005, 20-25/07/2005

20-26/07/2005

MBES 8160

MBES 8101

Honiara 15-21/06/2005, 24-27/06/2005, 29/07/2005

14-15/07/2005, 29/07/2005

MBES 8160

MBES 8101

Marovo 01/07/2005, 06-07/07/2005

30/06-07/07/2005

MBES 8160

MBES 8101

Noro 12-15/07/2005

09-11/07/2005, 13-14/07/2005, 18-19/07/2005

MBES 8160

MBES 8101

3.2 Field Personnel

SOPAC

Jens Krüger Physical Oceanographer

Kalisi Fa’anunu Technical Officer

Peni Musunamasi Electronics Engineer

Ed Saphore Electronics Consultant

Vessel

Brian Hennings Master

Gordon Elliot Officer

Nelson Tafilangi Engineer

Ram Reddy Cook



3.3 Geodetic reference system

The survey results were mapped in terms of the UTM 57 geodetic reference system as summarised in the table below.

Geodetic datum WGS84

Ellipsoid WGS84

Semi-major axis (a) 6378137.000

Semi-major axis (b) 6356752.314

Inverse flattening (1/f) 298.257223563

Eccentricity sq. (e2 ) 0.0066943800

Projection UTM Zone 57 South

Projection type Transverse Mercator

Origin latitude 00° 00' 00.000" North

Origin longitude 156° 00' 00.000" East

Origin false easting 500000.0000

Origin false northing 10000000.0000

Scale factor 0.9996000000

Grid unit Metres

Geodetic transformation From WGS84 (GPS satellite datum) to UTM 57 South

Source coordinate system WGS84

Target coordinate system UTM 57 South

Transformation parameters

dX 0.00

dY 0.00

dZ 0.00

rX 0.00000

rY 0.00000

rZ 0.00000

scale 0.00000



3.4 Vessel Description and Static Offsets

Sensor X (m) Y (m) Z (m)

Reference point at water level 0.00 0.00 0.00

Motion Reference Unit (MRU) 0.00 0.00 1.82

Positioning Antenna (GPS) 1.92 –6.92 –6.29

Multibeam (MBES), Reson 8160 0.86 –3.96 0.80

Multibeam (MBES), Reson 8101 –2.15 –2.82 1.13

Winch –14.29 1.92 3.00

Vessel

Name Summer Spirit

Length overall 25 m

Breadth (mid) 6 m

Draft (mid) 2.5 m

Displacement 65 t

Port of registry Brisbane

Registration No. IQ115Q

Call Sign 3DTF

Vessel Type Mono-hull motoryacht

+X

-X

+Y-Y

Winch MBES

MRU

GPS

Not to scale

MBES

Winch

GPS

-Z

+Z

+Y-Y

Water level

MRU



Figure 16. The chartered survey vessel RV Summer Spirit.

3.5 Positioning Control

The vessel's reference point (X=0, Y=0, Z=0) was the motion reference unit (MRU) position at the waterline. Positioning was by stand-alone GPS, using an Ashtech Aquarius dual-frequency P-code receiver. A good satellite constellation status was observed throughout the survey. The patch test was conducted in Honiara, Solomon Islands, using RTK GPS.

3.6 Survey Computer

The survey computer was a Windows 2000 PC running Hypack 4.3. This computer was used for continuous on-line data logging and computation of positioning and digital bathymetry. The package also provided a line control display for the helm. The on-line operator continuously monitored a range of quality control parameters.

Off-line Hypack 4.3A and 6.2 packages were used in the office for replaying and post-processing of track data and bathymetry. An A0 plotter was available for the production of full-size charts (841 x 1189 mm).

3.7 Multibeam Echosounder

Two multibeam echosounders (MBES) were temporarily installed on MV Summer Spirit, and used to provide swathe bathymetry data. A MBES provides high-resolution information about the depth of water from the surface to the seafloor in a water body. The MBES were (i) the Reson SeaBat 8160 for waters generally exceeding 200 m; and (ii) the Reson SeaBat 8101 for shallow water areas. The main instrumental and operating parameters for both systems are listed below. Note that the auxiliary systems such as gyro and GPS were the same for both MBES.



Instrumentation Item Reson SeaBat 8160 Reson SeaBat 8101

Transducer mount Starboard hull-mounted Port side hull-mounted

Motion reference unit TSS DMS 2-05 Dynamic Motion Sensor

TSS DMS 2-05 Dynamic Motion Sensor

Gyro SG Brown Meridian Surveyor Gyro Compass

SG Brown Meridian Surveyor Gyro Compass

Sound velocity probe at transducer

Installed N/A

Operating Parameters Reson SeaBat 8160 Reson SeaBat 8101

Transducer Frequency 50 kHz 240 kHz

General water depth 10–2500 m 0 – 250 m

Average ship's speed 7 knots (3.6 m/s) 7 knots (3.6 m/s)

Transmit Power Variable 1–16 Variable 1–16

Pulse length Variable 0.5–10.0 ms Variable 0.5–10.0 ms

Horizontal coverage Approximately two times water depth

Approximately two times water depth

No of beams / beam spacing

126 / 1.5 ° 101 / 1.5 °

Ping rate Variable, maximum of 4 Hz Variable, maximum of 4 Hz

Dynamic Offset Calibration

Honiara, 29/6/2005. Reson 8101

Honiara, 29/6/2005. Reson 8160

Roll correction –0.80 –0.60

Pitch correction –3.00 –2.00

Yaw correction –4.00 –3.00

GPS Latency correction 1.00 0.80

Gyro correction Not determined Not determined

3.8 Multibeam Echosounder Data Processing

On return to the SOPAC office in Suva, Hypack 4.3A and 6.2 softwares were used for the post-processing of the MBES survey data. Post processing is a form of data reduction, which involves checking, calibration, cleaning and preparation necessary to convert raw measurements into a form suitable for analysis, application and presentation. The product of post processing is in the form of ASCII listings of gridded easting, northing, and depth (XYZ) points. Gridded XYZ points from Hypack were used in Surfer 8.05 to produce final charts and figures. The processing and chart production sequences are listed below.



Post-processing Sequence

Phase 1 Correct for heading, heave, roll, pitch, navigation errors. Apply tidal and sound velocity corrections.

Phase 2 Filter to remove poor-quality beams and spikes. Manual editing to remove outliers from individual survey lines.

Phase 3 Apply filters were appropriate to remove outliers from median depth and / or further manual cleaning of outliers.

XYZ Output ASCII XYZ files (easting, northing, depth) are in the project coordinate system. The final output consisted of a file that includes all post-processed sounding points, as well as files of reduced points at appropriate grid dimensions.

Chart Production Sequence

XYZ to grid XYZ data are reduced and gridded to approx. 1 mm (0.1%) at the charting scale (e.g. 50 m grid size for a chart scale of 1 : 50 000).

Digital terrain model (DTM) A surface model is created from the grid. A search radius of approximately three times the grid spacing is used to fill data gaps. The DTM is also blanked against regions that contain no valid data such as land and reef areas.

Chart output DXF contours, PDF chart, backdrop images, and DTM model in the project coordinate system.

Various levels of smoothing were applied to the contours and DTM, which gave a realistic impression of the seabed without removing any real features from the data set.

3.9 Multibeam backscatter

The MBES records echo strength data (reflected energy) that can be presented as seabed backscatter maps, similar to sidescan sonar. A sidescan sonar mosaic, or backscatter image, shows information on the composition of the seafloor. The backscatter signal recorded along with the MBES data was of very poor quality and was therefore not processed or interpreted.

3.10 Tidal Information

Observed soundings have been reduced to chart datum using the information summarised in the following table.



Post-processing Sequence

Honiara Honiara tide gauge provided by the Australian Bureau of Meteorology (http://www.bom.gov.au/oceanography/) through the South Pacific Sea Level and Climate Monitoring Project (http://www.pacificsealevel.org/), see Figure .

Marovo Admiralty Tide Tables (Marovo Lagoon), Volume 4, 2005, Pacific Ocean, UK Hydrographic Office.

Noro Admiralty Tide Tables (Blackett Strait), Volume 4, 2005, Pacific Ocean, UK Hydrographic Office.

Gizo Admiralty Tide Tables (Gizo Harbour), Volume 4, 2005, Pacific Ocean, UK Hydrographic Office.

Figure 17. SEAFRAME tide gauge datum definition and other geodetic levels at Honiara. Mean sea level at Honiara is 0.6905 m above the SEAFRAME datum.



3.11 Speed-of-sound Profiling

The accuracy of the depth soundings depends in part on the variation of the speed of sound with water depth. This is because the acoustic beams pass through a water column that has varying properties (causing refraction). The sound speed structure of the water column is determined from the measurement of temperature, salinity and depth (with a Conductivity, Temperature and Depth sensor – CTD). The main instrumental, operational, processing parameters are listed below.

CTD Instrumentation

Make SeaBird Electronics

Model SeaCat 19+ (self-powered, self-contained)

Serial number 4716

Depth rating 3000 m

Operating Parameters

Sample rate 1 scan every 0.5 s

Maximum depth Limited to 400 m due to wire rope length

Data recorded Profiles of conductivity, temperature, and pressure

Data Processing

Positioning The profile position was taken at the GPS attenna near the start of the downcast. Vessel drift may have been significant (~500 m) over the duration of the profile.

Data conversion Converted raw data (.hex) to a .cnv file. The following values are output from the recorded data:

Pressure, dbar

Depth, m (derived using salt water at local latitude)

Temperature, deg C (ITS-90)

Salinity, psu (derived)

Density, kg m-3 (derived)

Sound velocity, m s-1 (derived using Chen and Millero, 1977)

Bin average Average data into 1 m depth bins. No filtering was applied.

Output Processed data is saved in ASCII text format with the file name date_location_bin.cnv.

The CTD profile details are listed below. The summaries of the CTD profile data in graphical form are shown in Appendix 2.



Profile location Date Time Easting Northing Depth (m)

Honiara 14/06/2005 11:50 606291 8960522 295

Honiara 18/06/2005 11:40 627320 8971401 447

Honiara 27/06/2005 11:36 577477 8982446 801

Marovo 01/07/2005 10:01 413436.57 9043713.84 538

Marovo 02/07/2005 11:11 399127.4 9034578 46

Noro 11/07/2005 10:21 302679.9 9095031.18 209

Noro - Cannery 11/07/2005 13:38 301294.38 9091212.38 79

Noro 13/07/2005 12:00 305535.93 9099896.44 330

Gizo 17/07/2005 11:50 251131.97 9113800.69 300

Gizo 23/07/2005 16:41 263861.29 9105469.16 40

Gizo 24/07/2005 08:26 264188.52 9105536.99 41.5

Gizo South 25/07/2005 12:09 255127.81 9103467.33 71

Gizo test line cast 25/07/2005 14:59 270171.72 9101557.27 70

Honiara – patch test 29/07/2005 15:50 607435.56 8960669.93 87

As noted above, the on-board CTD probe could only be operated to a maximum depth of 400 m, due to restrictions on the wire rope length. In order to ensure corrections to a maximum sounded depth of approximately 1800 m below sea level, the ship-based profile data were complemented with data from the generalised digital environmental model (GDEM) as summarised in the table below. The GDEM model is a global climatology model developed by the U.S. Naval Oceanographic Office and provides monthly temperature, salinity, and sound velocity profiles based on a 2.5º grid (https://128.160.23.42/gdemv/gdemv.html).

The geographic locations of the CTD casts as well as the GDEM extraction locations as listed above are plotted and shown in Figure to Figure below. The final sound velocity profiles used to correct MBES data were therefore constructed from two sources according to depth, as shown in the table below, and illustrated in .

Sound Velocity Data Source Water Depth

CTD casts 0 to 400 m

GDEM model 400 to 2000 m



Generalised Digital Environmental Model Data (GDEM)

Honiara Marovo Noro Gizo

Data file version 3.0, URL accessed on 22/6/2006

3.0, URL accessed on 1/7/2006



Date Monthly average for June

Monthly average for July



Latitude 9.25 ºS 8.75 ºS 8.25 ºS 8.00 ºS

Longitude 159.75 ºE 158.25 ºE 157.25 ºE 156.75 ºE

Easting 582380.36 417506.43 307241.80 251990.13

Northing 8977421.66 9032704.80 9087641.59 9115024.16

Available data Depth, temperature, salinity, sound velocity

Depth, temperature, salinity, sound velocity



Bin size From 10 to 100 m, increasing with depth

From 10 to 100 m, increasing with depth

From 10 to 100 m, Increasing with depth

From 10 to 100 m, Increasing with depth

Maximum Depth 1600 m 1600 m 3800 m 2800 m

0

200

400

600

800

1000

1200

1400

1600

1800

2000

1480 1500 1520 1540 1560

Sound Velocity (m/s)

Dep

th (

m)

CTD

GDEM

Figure 18. Plot showing an example sound velocity profile used for MBES data correction. The solid blue line in the upper water column is the data derived from the CTD cast, and the dashed red is plotted from GDEM data extending to a depth of 2000 m.



Figure 19. Map showing the location of CTD () and GDEM () profiles at Honiara.

Figure 20.Map showing the location of CTD () and GDEM () profiles at Marovo.



Figure 21. Map showing the location of CTD () and GDEM () profiles at Gizo.

Figure 22. Map showing the location of CTD () and GDEM () profiles at Noro.



4. REFERENCES

Anderson, R.C. 1998. Submarine topography of Maldivian atolls suggests a sea level of 130 metres below present at the last glacial maximum. Coral Reefs 17: 339–341.

Array for real-time geostrophic oceanography. ARGO. http://www.argo.ucsd.edu/ accessed 21/06/06.

Carter, R. 1984. Baseline study of Port Noro, Harthon Sound, New Georgia Isalnds, Solomon Islands, 23 June – 6 July 1983. SOPAC Cruise Report 87, 25 p.

Chen, C.T. and Millero, F.J. 1977. Speed of sound in seawater at high pressure. Journal of the Acoustic Society of America 32(10), 1357 p.

Clouard, V. and Bonneville, A. 2003. Submarine landslides in Society and Austral Islands, French Polynesia: evolution with the age of edifices. In: Locat, J. and Mienert, J. (eds) Submarine Mass Movements and their Consequences, , pp. 335–341, Kluwer Academic Publishers.

Dahl, A.L. 1980. Regional ecosystems survey of the South Pacific Areas. SPC/IUCN Technical Paper 179. South Pacific Commission, Noumea, New Caledonia.

Dickinson, W.R. 2004. Impacts of eustasy and hydro-isostasy on the evolution and landforms of Pacific atolls. Palaeogeography, Palaeoclimatology, Palaeoecology 213: 251–269.

Generalised Digital Environmental Model. GDEM. https://128.160.23.42/gdemv/gdemv.html accessed 21/06/06.

Global Topography. GTOPO. http://topex.ucsd.edu/marine_topo/mar_topo.html. Global topography data is available from: http://topex.ucsd.edu/cgi-bin/get_data.cgi

Gordon, L. and Lohrman, A. 2001. Near-shore Doppler current meter wave spectra, NortekUSA, 11p. http://www.nortekusa.com/principles/Waves.html

IFREMER 1994. SOPACMAPS Project. Final Report – Malaita. SOPAC Technical Report 194.

Keating, B. 1987. Structural failure and drowning of Johnston Atoll, central Pacific basin. In: Keating, B.H., Fryer, P, Batiza, R., and Boehlert, G.W. (eds.), Seamounts, Islands, and Atolls. Geophysical Monograph 43: 43–59.

Kroenke, L.W. 1995. A morphotectonic interpretation of SOPACMAPS 1:500 000 charts, central Solomon Islands – southern Tuvalu. SOPAC Technical Report 220.

Marks, K.M. and Smith, W.H.F. 2006. An evaluation of publicly available global bathymetry grids. Marine Geophysical Researches 27: 19–34.

McAdoo, B.G., Pratson, L.F. and Orange, D.L. 2000. Submarine landslide geomorphology, US continental slope. Marine Geology 169: 103–136.

Reson 2002. SeaBat 8160 Multibeam Echo Sounder System operator’s manual, v3.00.

Scott, G.A.J. and Rotondo, G.M. 1983. A model for the development of types of atolls and volcanic islands on the Pacific lithospheric plate. Atoll Research Bulletin 260, 33 p.

Smith, W.H.F. and Sandwell, D.T. 1997. Global seafloor topography from satellite altimetry and ship depth soundings, Science 277: 1957–1962.

Sontek. 2001. SonWave-PRO: Directional wave data collection, SonTek Technical Notes, 12 p. http://www.sontek.com/apps/waves/dirwave/wavemeas.htm



SOPAC (2007) Country profile of the Solomon Islands http://www.sopac.org/tiki/tiki-index.php?page=Solomon+Islands accessed 07/09/07.

Tolia, D.H. 1993. A review of SOPAC activities in Solomon Islands from 1972-1993. SOPAC Miscellaneous Report 153: 71.

Tropical Atmosphere Ocean Project. TAO. http://tao.noaa.gov

U. S. Geological Survey. 2007. Tectonic setting and volcanoes of Papua New Guinea, New Britain, and the Solomon Islands.

http://volcano.und.nodak.edu/vwdocs/volc_images/southeast_asia/papua_new_guinea/tectonics.html accessed 07/09/07.

Vedder, J.G. 1986. Summary of the Geology and offshore resources of the Solomon Islands In: Vedder, J.G., Pound, K.S. and Boundy, S.Q. (eds.). Geology and Offshore Resources of Pacific Island Arcs - Central and Western Solomon Islands. Circum-Pacific Council for Energy and Mineral Resources, Houston, Texas, pp. 295–306.

Vedder, J.G. and Coulson, F.I. 1984. Regional offshore geology of the Solomon Islands. In: Vedder, J.G., Pound, K.S. and Boundy, S.Q. (eds.). Geology and Offshore Resources of Pacific Island Arcs - Central and Western Solomon Islands. Circum-Pacific Council for Energy and Mineral Resources, Houston, Texas, pp. 99–108.

Vedder, J.G. and Coulson, F.I. 1986. Introduction to geology and offshore resources of Solomon Islands. In: Vedder, J.G., Pound, K.S. and Boundy, S.Q. (eds.). Geology and Offshore Resources of Pacific Island Arcs - Central and Western Solomon Islands. Circum-Pacific Council for Energy and Mineral Resources, Houston, Texas. 1–15.

Solomon Islands Bathymetry EU EDF-SOPAC Redu


APPENDICES

Appendix 1 – Statement of Accuracy and Suitability for Charting

Bathymetric maps are topographic maps of the sea floor. The bathymetric map serves as the basic tool for performing scientific, engineering, marine geophysical and environmental studies. The information presented in this report and enclosed charts are intended to assist persons and authorities engaged in recreation, tourism, marine resource related industries, hydrographic mapping, coastal development, trade and commerce, sovereignty and security, and environmental management. It is therefore important that users be informed of the uncertainties associated with the data and with products constructed from it. The following is an outline of the survey equipment used and the operating principles, including limitations and estimates regarding the data accuracy.

A1.1 Horizontal positioning

The methods used to acquire survey data will affect the final product accuracy. The global positioning system, GPS, uses radio signals from satellites that orbit the earth to calculate the position of the GPS receiver. Stand alone GPS has an estimated accuracy as good as approximately 10 m, depending on satellite configuration and atmospheric conditions. In addition to this, equipment and measurement errors also need to be considered.

A general rule of thumb is that surveys should be conducted with a positioning accuracy of 1 mm at the scale of the chart. Therefore, at a chart scale of 1:10 000, the survey would be required to be accurate to 10 m.

The present S-44 4th Edition Standard of the International Hydrographic Office (IHO) includes a depth-dependent factor that takes into account the added uncertainty of the positions of soundings from multibeam echo sounder systems as water depth increases. The relevant survey orders are listed in Table A1.1, with multibeam surveys conducted by SOPAC generally falling into orders 2 or 3.

Table A1.1. Recommended accuracy of survey orders

Survey order Application Recommended horizontal accuracy

Order 1 Harbours and navigation channels 5 m + 5% of depth

Order 2 Depths < 200 m 20 m + 5% of depth

Order 3 Depths > 200 m 150 m + 5% of depth

For the purpose of this survey, it was assumed that the use of stand-alone GPS provided adequate precision in terms of horizontal position. Therefore, it is not recommended to interpret nearshore data at scales larger than 1:10 000, or a grid size smaller than 10 m. For areas with water depths greater than 200 m, a charting scale of at least 1:50 000 is recommended.

A1.2 Depth measurements

Bathymetric maps provide information about the depth of water from the water surface to the seabed. Through the use of detailed depth contours and full use of bathymetric data, the size, shape and distribution of underwater features are clearly revealed. The depth is measured using a ship-mounted multibeam echo sounder (MBES). The MBES transducer produces an acoustic pulse designed as a fan that is wide in the across-track and narrow in the along-track direction (Figure A1.1). The swath of seabed covered by this transmit beam is typically more than twice the water depth. The pulse of sound emitted from the MBES



travels through the water column and is reflected back as an echo and received as numerous narrow beams by the receiving elements of the MBES. The measurements are time based, and by using the speed of sound in seawater each time is converted first to a range and then, knowing the beam angle, to a depth. The distance to the seabed is then combined with the movement of the vessel to stabilise it into a real-world framework. This framework is then positioned to provide XYZ soundings for each beam’s interaction with the seabed. A series of these swaths are then combined to produce a three-dimensional representation of the seafloor topography.

The accuracy of the MBES system is critically dependent on the corrections applied for vessel motion (heave, pitch, roll, yaw, and heading). However, the absolute accuracy of single beam and multibeam bathymetry depends on several factors that are not easy to determine. For single beam data, probably the principal errors that may be introduced are due to topographic features falling between survey lines. Multibeam systems give far better coverage.

The S-44 4th Edition Standard of the IHO lists values “a” and “b” (Table A1.2) that should be introduced into the following equation to calculate the error limits for depth accuracy:

22 dba , where d = depth.

Table A1.2. Values for calculating error limits for depth accuracy

Survey order Application Constants

Order 1 Harbours and navigation channels a = 0.5 m, b = 0.013

Order 2 Depths < 200 m a = 1.0 m, b = 0.023

Order 3 Depths > 200 m a = 1.0 m, b = 0.023

For example, the IHO recommends that a near-shore coastal survey (Order 2) in water depths of 20 m should have a maximum depth error of ±1.1 m.

A MBES has, as any other measuring instrument, an inherent limit in its achievable accuracy.

Figure A1.1. Conceptual illustration of bathymetric data acquisition with a multibeam echosounder, MBES (source: http://www.rcom.marum.de, accessed 10/01/2007).



The total measurement accuracy, i.e. the uncertainty in the depth and location of the soundings, also depends upon the errors of the auxiliary instruments such as the motion reference unit, the gyro compass, and the measurements of the speed of sound through the water column. The sea state at the time of the survey also contributes significantly to the quality of the data. The possible accuracy of the measured depths may be estimated by considering the following main error sources.

A1.3 Error budget analysis for measured depths

Measurement The nadir-beam bottom detection range resolution of the multibeam system has a maximum limit of 0.1 m (Reson, 2002). However, multibeam systems are particularly susceptible to errors in the far range (outer beams), and detection is estimated at ± 0.3 m plus 0.5 % of the depth. Errors also include the detection of the sea floor due to local variations of depth within the beam footprint, especially in the outer beams, and a varying density of the bottom material. This may be significant if a relatively low-frequency transducer is used on soft marine muds in shallow water.

Transducer draft The transducer depth below the water line may be determined to ± 0.1 m. However, the draft of the vessel due to the variability in vessel loading, e.g. fuel and fresh water storage, was not determined. It is estimated that this introduced a water depth independent error of up to ± 0.2 m. Dynamic draft errors, e.g. vessel squat, may also be significant.

Sound velocity The sound velocity profiles measured by the conductivity-temperature-depth sensor (CTD) probe did not reach full survey depths in waters exceeding 400 m water depths. An inaccurate sound path from the transducer to the bottom and back will affect not only the observed depth of water, but also the apparent position of the observed sounding. This error is presumed to exceed 0.5% of the water depth beyond the direct CTD measurements. In order to minimise this error, ARGO and GDEM data may be used to supplement the CTD data.

Heave This error is directly dependent on the sea state, the sensitivity of the motion sensor and installation parameters. The MRU installation did not account for the offset distance between MRU, the centre of gravity, and the MBES transducer mount. However, the software was able to perform lever arm calculations and heave compensation during post-processing, and the vertical error is assumed to be significant only in heavy seas.

Tide/water level Errors due to tides may be significant, especially where predicted tides some distance from the survey area are used. Perhaps ± 0.3 m for uncertainty in tidal datum need to be considered.

From the listing above, it is estimated that the measured depths in 20 m are typically accurate to about ± 1.1 m (± 0.3 m root mean square). However, the complete bathymetric model, or digital terrain model (DTM), is based on some form of interpolation between the sampled depths from several survey lines. Consequently, the total uncertainty associated with a bathymetric model will include uncertainties due to horizontal positioning, and uncertainties introduced by the interpolation process, and will therefore be larger than the depth sounding uncertainty.

A1.4 Multibeam echosounder data density



The density of data used to construct a bathymetric grid is an important factor in its resolution – the denser the data, the higher the resolution that can be achieved. Sounding density is critical in terms of seabed feature detection and delineation. The two main factors that control the potential bathymetric target resolution capability of a multibeam echosounder are the distance between individual soundings (both in the cross-track and along-track dimensions), and the footprint size. The footprint is the area on the seabed covered by the sound pulse. Footprint size is a function of range, beam angle, and receiver and transmitter beam widths. A high sounding density and small footprint will result in higher resolution data. Conversely, the target detection capability is going to decay as a result of a growing projected beam footprint and decreasing data density.

The along-track spacing is controlled by the ping rate, which in turn is limited by the two-way travel time from the source to the seafloor. The maximum across-track spacing depends again primarily on the range, but also on the equiangular beam spacing. The size of the beams received by the MBES system is between one and one and a half degrees. This means that a system mounted on a ship will have an increasing projected footprint size with increasing water depth. The footprint will also be larger at the outer beams than at the centre of the swath, as the range and incident angles increase with distance from the nadir beam. It is possible to have local variations of depth within the beam footprint, causing vertical error and affecting amplitude detection.

Table A1.3 shows a summary of the projected beam footprint size under varying water depths for the two MBES systems currently in use by SOPAC. It should be noted that the higher frequency system (SeaBat 8101) is not appropriate for applications in waters deeper than 200 m. Due to the constant beam width; the sounded area varies according to the depth and slope, which results in a variable data density in the survey area.

Table A1.3. Projected footprint size under varying water depths

Water depth

SeaBat 8160 (deep water)

50 kHz, 126 beams at 1.5

SeaBat 8101 (shallow water)

240 kHz, 101 beams at 1.5

(m) Inner footprint at nadir (m)

Outer footprint at 65º (m)

Inner footprint, nadir (m)

Outer footprint (m)

20 0.5 2.8 0.5 3.5

50 1.3 7.0 1.3 17.6

100 2.7 14.0 2.6 35.3

200 5.3 28.0 5.2 70.6

500 13.3 69.9 N/A N/A

1000 26.7 139.8 N/A N/A

1500 40.0 209.8 N/A N/A

2000 53.4 279.7 N/A N/A

Table A1.3 assumes a horizontal seabed, and shows the variation in across-track footprint size with water depth and beam angle. The sounding density and swath width will also vary when surveying steep slopes, or highly incised margins, as the footprint size varies strongly with topography. Therefore, deeper sections have larger projected footprints and fewer data point. This has the effect that a bathymetric feature whose lateral dimensions are less than the beam footprint size will not be resolved.

It should also be noted that the along-track resolution usually exceeds the across-track resolution due to ping rates, especially in deep water. Since ping rates are limited by the two-



way travel time. Rates for water depths of 20 m and 1500 m are 12.9 and 0.2 pings per second, respectively. Using maximum ping rates, or when surveying in deep water, the same area may be measured with the outer beams for several pings, which may give inconsistent sounding data due to the poor repeatability on uneven seabed. In order to take into account depth-dependent point density, it is generally accepted to grid bathymetric data at a resolution that is on the order of the average beam footprint size, typically 10% of the water depth.



Appendix 2 – Multibeam Echosounder Coverage

Figure A2.1. Honiara coverage.

Figure A2.2. Gizo coverage.



Figure A2.4. Noro coverage.

Figure A2.3. Marovo coverage.



Appendix 3 – CTD Profile Data

36 – Solomon Islands Bathymetry EU EDF-SOPA


Appendix 4 – High-resolution A0 Charts, Solomon Islands

Charts are available from SOPAC, and can be downloaded from its website (www.sopac.org). Full size is 841 x 1189 mm. (Low-resolution A4 representations follow.)

Chart No Title Scale Drawing No.

1 Gizo, Bathymetry 1 : 25 000 ER113.1

2 Honiara, Bathymetry 1 : 75 000 ER113.2

3 Marovo, Bathymetry 1 : 50 000 ER113.3

4 Noro, Bathymetry 1 : 50 000 ER113.4



Appendix 4 – Line logs

SOPAC MULTIBEAM ONLINE LINE LOG

Installation Offsets Calibration Offsets Hypack Project Name: Solomons

Device X Y Z Yaw Pitch Roll Lat. Country: Solomon Islands

GPS 1.92 -6.92 -6.29 0.80 Area: Solomon Islands

Gyro N/A 0.00 Vessel: Summer Spirit

MRU 0.00 0.00 1.82 0.00 0.00 0.00 MBES System: 8160

MBES Head 0.86 -3.96 0.80 -3.00 -2.00 -0.60 0.00 Positioning: Stand alone GPS

Date Location Line No.

Time Fix

HDG SPD Filename (.HSX) Line QC Comments / Online changes SOL EOL SOL EOL

15/06/2005 Honiara 09:42 12:04 93 348 60 5.6 008_0941 KF Trial line to 3rd ADP deployment

Honiara 12:08 13:11 349 473 320 5.9 009_1208 KF

Honiara 13:14 14:24 474 605 231 6.1 010_1314 KF

Honiara 14:24 14:55 606 662 241 5.9 011_1425 JK

Honiara 15:00 15:09 663 680 163 6.1 001_1500 JK

Honiara 15:13 15:40 681 735 206 6 002_1513 JK

Honiara 15:52 16:11 736 772 274 6.5 003_1552 JK W of YC. Scouting for good ADP pos.



Honiara 16:53 17:04 835 859 101 6.5 006_1652 KF

16/06/2005 Honiara 13:30 15:21 860 1057 56 5.7 000_1330 KF

Honiara 15:25 16:19 1058 1160 247 6 000_1525 KF

Honiara 16:19 17:10 1161 1259 249 5.9 000_1619 KF

17/06/2005 Honiara 08:12 08:41 1260 1314 37 5.9 000_0812 KF

Honiara 08:49 11:01 1315 1531 45 6.1 000_0849 KF

Honiara 11:10 13:06 1532 1752 212 5.9 000_1110 KF

Honiara 13:21 13:52 1754 1809 195 6.3 000_1321 ES faulty two thirds of the way

18/06/2005 Honiara 09:00 09:34 1810 1873 71 5.8 000_0900 KF



Honiara 09:42 09:50 1874 1890 250 6 000_0942 KF resweeping previous line section- last lineof the 17/06/2005

Honiara 09:55 11:35 1891 2075 78 6.1 000_0955 KF

Honiara 12:10 13:00 2076 2165 116 6 000_1210 KF

Honiara 13:11 13:49 2166 2237 318 5.7 000_1311 KF

Honiara 14:02 16:00 2238 2457 223 5.8 000_1401 ES

19/06/2005 Honiara 08:20 08:35 2458 2501 20 6.2 000_0820 KF

Honiara 09:12 09:22 2502 2521 60 5.9 000_0912 KF

Honiara 09:38 09:45 2522 2534 280 5.9 000_0938 KF

Honiara 09:52 10:01 2535 2551 64 6.2 000_0952 KF

Honiara 10:23 10:39 2552 2583 78 5.7 000_1023 KF

Honiara 11:16 11:47 2585 2642 136 5.9 000_1115 KF

Honiara 11:54 12:26 2643 2702 333 5.9 000_1154 KF

Honiara 12:34 13:08 2703 2762 121 5.6 000_1234 KF

Honiara 13:17 13:45 2763 2820 303 6 000_1314 es

Honiara 13:52 14:20 2821 2873 128 5.5 000_1351 es

Honiara 14:25 14:52 2874 2925 303 5.5 000_14:25 es

Honiara 14:58 15:00 2926 2930 223 5.5 000_14:58 es dnp start again

Honiara 15:07 16:47 2931 3118 243 6 000_15:07 es

20/06/2005 Honiara 08:44 09:39 3121 3234 55 5.9 000_0844 KF Savo Island

Honiara 09:41 11:59 3235 3495 96 6 000_0941 KF Savo Island

Honiara 12:07 13:30 3496 3645 330 6.4 000_1207 KF Savo Island

Honiara 14:20 17:31 3646 4011 130 5.6 000_1420 KF

21/06/2005 Honiara 07:47 07:50 4012 4016 5.9 000_0747 KF DNP

Honiara 07:57 08:20 4017 4054 15 6 000_0757 KF

Honiara 08:23 08:38 4055 4086 305 5.5 000 -0823 KF

Honiara 08:44 008:59 4087 4113 314 5.8 000A0844 KF

24/06/2005 Honiara 17:12 17:29 4114 4147 295 6.3 000_1712 KF Demo line for EU visit

Honiara 17:32 17:50 4148 4180 177 4.8 000_1732 KF

26/06/2005 Honiara 09:25 10:58 4181 4353 95 6.4 000_0925 KF

Honiara 11:13 11:25 4354 4395 111 5.8 000_1113 KF



Honiara 11:38 12:01 496 4440 322 6.1 000_1138 KF

Honiara 12:08 13:06 4441 4550 246 5.9 000_1208 KF

Honiara 13:14 14:14 4551 4656 82 5.8 000A1314 KF

Honiara 14:24 14:47 4657 4696 125 5 000_1424 KF

Honiara 14:49 15:16 4697 4745 275 6 000_1449 KF

Honiara 15:22 16:33 4746 4884 212 6.1 000_1522 KF

27/06/2005 Honiara 08:19 08:38 4885 4909 278 6.2 000_0819 KF

Honiara 08:42 11:28 4910 5226 311 6.4 000_0842 KF

Honiara 12:03 15:15 5227 5589 142 5.9 000_1203 KF

01/07/2005 Marovo 09:40 09:55 5623 5647 48 5.5 000_0940 KF out of Bili Passage to CTD cast

Marovo 10:21 11:22 5648 5763 341 6.1 000_1021 KF

Marovo 11:22 5764 000_1122

Marovo 11:24 000_1124 KF DNP

Marovo 11:25 5622 000_1125 KF line into Tongoro passage

06/07/2005 Marovo 08:56 5811 000_0856 KF first 8160 line after computer changeover.

Marovo 09:31 10:06 5894 6.1 000_0931 KF

Marovo 10:07 10:23 5895 5926 279 6.1 000_1007 KF

07/07/2005 Marovo 08:22 08:44 6115 6155 310 6.2 000_0822 KF heave. Pitch and roll corrections unapplied towards end of line

Marovo 08:53 08:59 6156 6169 344 6.2 000_0853 KF

Marovo 09:00 09:07 6170 6181 284 6 000A0900 KF

Marovo 09:10 6182 6 000_0910 KF

Marovo 09:52 10:01 6207 260 5.8 000A0952 KF

Marovo 10:03 10:10 6208 6221 167 5.9 000_1003 KF

Marovo 10:17 10:33 6222 6250 324 5.6 000_1017 KF

12/07/2005 Noro 08:16 09:10 7826 7921 81 5.8 000_0816 KF

Noro 09:13 10:02 7922 7929 5.9 000_0913 KF

Noro 10:02 10:49 7930 8015 248 6.1 000:1002 KF

Noro 10:57 11:52 8016 8116 68 5.9 000_1057 KF

Noro 11:56 12:06 8117 8134 6 000_1156 KF DNP - gyro probs

Noro 1300 13:56 8135 8238 273 6.1 000_1300 KF



Noro 1402 15:05 8239 8355 33 5.9 000_1402 KF

Noro 15:09 8356 8480 248 5.9 000_1543 KF

Noro 16:20 17:30 8481 8611 77 6.2 000_1620 KF

13/07/2005 Noro 08:31 09:14 8612 8695 27 6 000A0831 KF

Noro 09:18 10:40 8696 8847 272 6 000_0918 KF

Noro 10:44 11:09 8848 8896 211 6 000_1044 KF

Noro 11:17 11:54 8897 8969 30 6.1 000_1117 KF

Noro 12:20 13:05 8970 9054 70 5.9 000_1220 KF

Noro 14:43 14:45 9147 9150 33 6.6 000_1443 KF

Noro 14:47 15:07 9151 9188 56 5 000_1447 KF

Noro 15:11 15:35 9189 9233 231 6.2 000_1511 KF

Noro 15:42 15:52 9234 9253 120 5.4 000_1542 KF

15:57 9254 9283

14/07/2005 Noro 15:20 15:22 9545 9550 5.5 000_1520 KF DNP

Noro 15:23 15:44 9551 9589 359 6 000_1523 KF

Noro 15:51 9592 9632 219 5.7 000_1551 KF

15/07/2005 Noro 07:37 08:22 9633 9716 97 6 000_07367 KF

Noro 08:44 9717 9753 260 6.2 000_0844 KF

Noro 09:08 09:20 9754 9780 6 000_0908 KF

Noro 09:27 09:36 9781 9797 207 5.5 000A0927 KF

Noro 09:49 09:57 9815 28 6.1 000A0949 KF

Noro 10:00 10:08 9829 187 5.5 000A1000 KF

Noro 10:11 10:12 9830 9833 348 5.6 000A1011 KF

Noro 10:23 10:51 9885 9884 252 6 000A1023 KF

17/047/2005 Gizo 08:14 10:18 9916 135 307 5.6 000_0814 KF

Gizo 13:41 14:37 254 359 133 6.2 000_1341 KF

20/07/2005 Gizo 09:13 10:07 713 812 140 5.9 000A0913 KF

21/07/2005 Gizo 08:07 08:25 1395 1428 303 6.2 000_0807 KF

Gizo 08:37 09:03 1429 1486 348 5 000_0837 KF

Gizo 09:07 09:51 1487 1572 214 6.2 000_0907 KF

Gizo 09:55 10:09 1573 1594 137 5.5 000_0955 KF



Gizo 10:13 10:24 1595 1615 94 4.9 000_1013 KF

Gizo 10:30 10:39 1616 1632 266 6.2 000_1030 KF

25/07/2005 Gizo 14:31 14:35 3375 3382 134 6 000_1431 KF system comparison test line

Gizo 14:39 14:42 3383 3390 302 4.3 000_1439 KF system comparison test line

29/07/2205 Honiara 14:54 3681 14:56 3685 0 6.3 001_1454 JK patch test: roll

Honiara 15:02 3686 15:04 3692 181 6 001_1502 JK patch test: roll

Honiara 15:09 3693 15:13 3710 298 6.1 004_1509 JK patch test: yaw/pitch GPS fail at EOL

Honiara 15:18 3711 15:22 3719 120 6.2 004_1518 JK patch test: lat/pitch

Honiara 16:26 3720 15:30 3737 300 6 002_1526 JK patch test: yaw

Honiara 15:34 3738 15:38 3749 128 4.2 004_1534 JK patch test: lat

SOPAC MULTIBEAM ONLINE LINE LOG

Installation Offsets Calibration Offsets Hypack Project Name: Solomons

Device X Y Z Yaw Pitch Roll Lat Country: Solomon Islands

GPS 1.92 -6.92 -6.29 1.00 Area: Solomons

Gyro 0.00 0.00 Vessel: Summer Spirit

MRU 0.00 0.00 1.82 0.00 0.00 0.00 MBES System: 8101

MBES Head -2.15 -2.82 1.13 -4.00 -3.00 -0.80 0.00 Positioning: Stand alone GPS



Date Location Line No.

Time Fix

HDG SPD Filename (.HSX)

Log File

(.LOG) Line QC Comments /

Online changes SOL EOL SOL EOL

14.06.05 Honiara 1 10:10 10.14 1 7 8.9 6 001_1010 patch test, roll

Honiara 1 10:21 10:24 8 14 178 6.2 001_1021 patch test, roll

Honiara 2 10:32 10:43 15 24 311 2.7 002_1032 patch test, latency

Honiara 2 10:52 10:57 25 34 125 6.3 002_1052 KF/JK patch test, pitch & yaw

Honiara 2 11:11 11:15 35 44 315 6.13 002_1111 JK patch test, latency & pitch

Honiara 4 11:21 11:26 45 54 119 5.6 004_1121 JK patch test, yaw

Honiara 4 11:39 11:44 55 64 309 3.3 004_1139 JK patch test, spare line

15/06/2005 Honiara 3 07:31 07:37 65 75 94 6 003_0731 JK ADP2 location

Honiara 5 07:42 07:45 76 83 275 5.6 005_0742 JK ADP2 location

Honiara 7 07:52 07:56 84 92 90 6.5 005_0752 KF ADP2 location

30/06/2005 Marovo 10:09 10:14 5590 5595 270 4.4 000_1008 KF

trial line in passage, single beam on

Marovo 13:39 14:04 5596 5622 107 4.1 000_1339 KF

trial line while anchoring in Bili passage

01/07/2005 Marovo 12:30 14:23 5623 6038 188 6.3 000_1230 KF

Marovo 15:03 15:09 6039 6050 5.5 000_1503 KF

Marovo 15:12 15:17 6051 6063 163 6.3 000_1512 KF

Marovo 15:25 16:11 6064 6152 55 5.9 000A1525 KF

02/07/2005 Marovo 08:54 09:07 6153 6177 162 6.1 000_0854 KF

Marovo 09:20 09:51 6178 6239 242 5.7 000_0920 KF

Marovo 10:00 10:25 6240 6294 6.1 000_1000 KF

Marovo 10:33 10:35 6295 6298 462 6.3 000_1033 KF

Marovo 10:39 11:08 6299 6355 276 5.8 000_1039 KF

Marovo 11:24 11:57 6356 6421 69 6.3 000A1124 KF

Marovo 12:00 12:14 6422 6446 218 5.9 000_1200 KF

Marovo 12:17 12:25 6447 6460 5.8 000_1217 KF

Marovo 12:28 12:39 6461 6482 239 6.1 000_12:28 KF

Marovo 12:45 12:54 6483 6499 62 5.8 000_1245 KF



Marovo 12:58 13:06 6500 6515 255 5.7 000_1258 KF

Marovo 13:13 13:25 6516 6536 76 5.5 000_1313 KF

Marovo 13:28 13:32 6537 6546 240 000_1328 KF

Marovo 13:37 13:42 6547 6557 127 6.1 000_1337 KF

Marovo 13:45 13:50 6558 6566 318 6.1 000_1345 KF

Marovo 13:52 13:54 6567 6572 150 6.1 000_1352 KF

Marovo 13:57 13:59 6573 6576 318 6.8 000_1357 KF

Marovo 14:01 14:04 6577 6581 5.5 000A1401 KF

Marovo 14:08 14:12 6582 6590 6.1 000_1408 KF

Marovo 14:14 14:17 6591 6598 115 6.4 000_1414 KF

Marovo 14:20 14:22 6599 6603 347 6.5 000_1420 KF

Marovo 14:26 14:28 6604 6608 190 6.5 000_1426 KF

Marovo 14:35 14:37 6609 6614 16 5.9 000_1435 KF

Marovo 14:40 14:42 6615 6620 237 5.5 000_1440 KF

Marovo 14:48 14:50 6621 6625 202 6.4 000_1448 KF

03/07/2005 Marovo 07:41 07:42 6626 000_0741 KF DNP, troubleshooting

trouble editing this day Marovo 14:52 15:19 4182 4233 251 6 000_1452 KF

Marovo 15:24 15:46 4234 4278 60 6.3 000_1542 KF

Marovo 15:52 16:15 4279 4325 268 6.2 000_1552 KF

Marovo 16:20 16:44 4326 4372 66 6.1 000_1620 KF

Marovo 16:48 17:13 4373 4419 262 6.1 000_1648 KF

Marovo 17:16 17:25 4420 4436 54 6.2 000_1716 KF

Marovo 17:30 17:43 4437 4461 50 6.1 000_1730 KF

04/07/2005 Marovo 07:14 07:36 4462 4501 260 6.3 000_0805 KF

Marovo 07:46 08:12 4502 4552 60 5.9 000_0746 KF

Marovo 08:13 08:13 4553 4554 5.7 000_0813 KF 1 p/s

Marovo 08:18 08:27 4555 4573 335 6 000_0818 KF 1p/s

Marovo 08:31 4572 000_0831 KF 1 p/s

Marovo 08:33 09:00 4625 264 5.9 000_0833 KF 1 p/s

Marovo 09:03 09:32 4626 4676 70 6 000_0903 KF 1p/s



Marovo 09:36 09:47 4677 4696 270 5.9 000_0936 KF 1p/s

Marovo 27 09:49 10:04 4698 4725 270 5.9 000_0949 KF 1p/s

Marovo 34 10:14 10:32 4726 4760 50 5.9 000_1014 KF 2p/s

Marovo 45 10:42 11:05 4761 4806 71 6 000_1042 KF

Marovo 48 11:12 11:37 4807 4855 190 5.9 000_1112 KF

Marovo 98 11:41 12:34 4856 4954 85 5.9 000_1141 KF

Marovo 12:36 12:37 4955 4957 102 5.7 000_1236 KF

Marovo 45 12:38 13:02 4958 5003 54 6.1 000_1238 KF

Marovo 13:05 13:29 5004 5048 211 5.9 000_1305 KF

Marovo 13:33 13:57 5049 5094 52 5.9 000_1333 KF

Marovo 44 14:01 14:27 5095 5139 206 6 000_1401 KF 7.5p/s (1st part only)

Marovo 14:31 14:53 5140 5181 79 5.8 000_1431 KF

Marovo 14:55 15:07 5182 5205 194 6 000_1455 KF

Marovo 15:11 15:16 5206 5214 217 6 000_1511 KF

Marovo 15:21 15:33 5215 5238 56 5.6 000_1521 KF

Marovo 15:35 15:39 5239 5246 51 5.9 000_1535 KF

Marovo 15:42 15:44 5247 5252 162 6.1 000_1542 KF

Marovo 15:46 15:48 5253 5256 338 6 000_1546 KF

Marovo 15:52 15:53 5256 5260 146 6 000A1552 KF

Marovo 15:55 15:57 5261 5265 184 6.1 000_1555 KF

Marovo 15:58 15:59 5266 5267 175 6 000_1558 KF

Marovo 16:01 16:03 5268 5272 39 5.6 000_1601 KF

Marovo 16:07 16:08 5273 5276 197 5.1 000_1607 KF

Marovo 16:16 16:21 5277 5291 221 5.9 000_1614 KF

Marovo 06:25 16:32 5292 5304 29 5.4 000_0625 KF

05/07/2005 Marovo 09:07 09:37 5305 5356 256 6.2 000_0907 KF

Marovo 09:41 10:05 5306 5401 231 6.2 000A0941 KF

Marovo 10:11 10:31 5402 5439 89 6.1 000_1011 KF

Marovo 10:35 10:57 5440 5478 214 5.9 000_1035 KF

Marovo 11:03 12:08 5479 5593 43 5.9 000_1103 KF



Marovo 12:37 13:10 5594 5657 93 6 000_1237 KF

Marovo 13:14 13:20 5658 5667 70 5.9 000B1314 KF

Marovo 13:21 13:25 5668 5676 120 5.7 000A1321 KF

Marovo 13:26 13:29 5677 5682 245 6 000_1326 KF

Marovo 13:32 13:34 5683 5687 73 5 000_1332 KF

Marovo 13:39 13:49 5688 5688 267 5.3 000_1339 KF

Marovo 13:50 13:51 6589 5709 14 4 000_1350 KF

Marovo 13:52 14:04 5710 5733 91 6 000_1352 KF

Marovo 14:05 14:09 5734 5741 282 6.1 000_1405 KF

Marovo 14:12 14:14 5742 5746 18 6.3 000_1412 KF

Marovo 14:17 14:26 5747 5764 283 5.8 000_1417 KF

Marovo 14:29 14:33 5765 5772 102 5.4 000_1429 KF

Marovo 14:36 14:38 5773 5776 297 5.8 000_1436 KF

Marovo 14:42 14:53 5777 5793 282 6.1 000_1442 KF

Marovo 14:55 14:58 5793 5799 281 5.6 000A1455 KF

Marovo 15:00 15:02 5800 5808 58 5.6 000_1500 KF

Marovo 15:07 15:09 5809 5810 99 5.8 000_1507 KF

06/07/2005 Marovo 11:41 11:53 5927 5947 357 5.1 000_1141 KF

Marovo 11:53 11:54 5948 000_1153

Marovo 11:55 000_1155 KF

Marovo 12:27 13:19 6065 15 6 000A1227 KF

Marovo 13:45 13:47 6066 000_1345 KF

Marovo 15:04 15:06 6074 78 6.5 000_1504 KF

Marovo 15:57 16:13 6075 6106 221 6.1 000_1557 KF

Marovo 16:15 6107 6114 000_1615 KF

07/07/2005 Marovo 11:13 12:11 66251 6363 212 5.9 000A1113 KF pretty bad line - DNP

Marovo 12:12 12:45 6364 6426 140 5.4 000_1212 KF

Marovo 12:54 13:14 6427 6459 141 4.8 000_1254 KF

Marovo 13:15 13:47 6460 6524 188 6.1 000_11315 KF

Marovo 13:49 14:15 6525 000_1349 KF



Marovo 14:23 14:46 6629 347 6.1 000_1423 KF

Marovo 14:48 14:49 6630 6632 252 5.5 000_1448 KF

Marovo 14:51 14:55 6641 250 5.7 000_1451 KF

Marovo 14:58 15:01 6642 6648 107 5.3 000_1458 KF

Marovo 15:20 15:29 6649 6666 107 5.4 000_1520 KF

Marovo 15:32 15:43 6667 6687 312 6.1 000_1532 KF

09/07/2005 Noro 15:13 6688 282 5.9 000_1513 KF

Noro 15:39 6745 000_1539 KF

Noro 15:56 16:33 6746 6820 290 5.9 000_1556 KF

10/07/2005 Noro 09:17 10:13 6821 6925 18 6.1 000_0917 KF

Noro 10:15 12:54 6926 7106 256 5.9 000_1015 KF

Noro 13:28 14:10 7107 7184 180 5.9 000_1328 KF

Noro 15:30 16:10 7185 7259 44 5.9 000_1530 KF

Noro 16:14 16:53 7260 7261 170 5.4 000A1614 KF

11/07/2005 Noro 09:30 7331 7334 000_0930 KF

Noro 09:32 10:16 7335 7417 356 5.9 000_0932 KF

Noro 10:36 11:49 7418 7443 169 6 000_1036 KF

Noro 10:56 11:05 7444 7467 19 6.1 000_1056 KF

Noro 11:09 11:44 7468 7532 195 5.4 000_1109 KF

Noro 11:51 12:21 7533 7589 355 6 000_1151 KF

Noro 12:25 13:40 7589 7642 178 5.8 000_1225 KF

Noro 13:48 14:06 7643 7676 21 6 000_1348 KF DNP the end of this line, rest ok

Noro 14:09 14:23 7677 7699 156 6 000_1409 KF

Noro 14:27 14:36 7700 7717 10 6.1 000_1427 KF

Noro 14:50 14:58 7718 7733 90 5.8 000_1450 KF

Noro 15:10 15:35 7734 7775 102 5 000_1510 KF

Noro 15:37 16:00 7776 7819 279 6 000_1537 KF

Noro 16:05 16:08 7820 7826 260 5.6 000_1605 KF

13/07/2005 Noro 13:34 14:24 9055 9146 211 6.1 000_1334 KF

Noro 16:29 9284 9331 90 5.9 000_1629 KF



14/07/2005 Noro 12:20 13:19 9332 9438 249 6 000_1220 KF

Noro 13:55 14:55 9439 9545 259 5.7 000_1355 KF

15/07/2005 Gizo 12:53 000_1253 KF DNP

Gizo 12:55 000_1255 KF DNP

Gizo 12:57 000_1257 KF DNP

17/07/2005 Gizo 12:09 12:10 136 139 184 5.5 000_1209 KF

Gizo 12:13 12:30 140 178 5.7 000_1213 KF

Gizo 12:44 253 131 5.7 000_1244 KF

Gizo 14:51 15:35 360 433 102 6 000A1451 KF

18/07/2005 Noro 13:26 14:25 434 545 67 6 000_1326 KF

Noro 14:32 14:37 546 554 137 5.9 000_1432 KF

19/07/2005 Noro 12:44 12:51 555 568 346 5.9 000A1244 KF

Noro 13:06 13:38 569 623 253 6 000_1306 KF

Noro 13:40 13:57 624 655 111 6 000_1340 KF

Noro 14:01 14:09 656 671 14 6.1 000_1401 KF

Noro 14:12 14:20 672 686 291 6 000A1421 KF

Noro 14:24 14:30 687 696 66 6 000_1424 KF

Noro 14:41 14:49 697 712 281 6 000_1441 KF

20/07/2005 Gizo 10:21 11:35 713 949 306 6 000A1021 KF

Gizo 11:39 11:52 950 974 44 5.5 000_1139 KF

Gizo 11:56 12:05 975 993 269 6 000A1156 KF

Gizo 12:09 12:30 994 1029 56 5 000A1209 KF

Gizo 12:32 12:33 1030 1032 110 6 000_1232 KF

Gizo 12:35 13:07 1033 1091 264 5.4 000_1235 KF

Gizo 13:17 14:35 1092 1234 314 5.8 000_1317 KF

Gizo 14:41 14:56 1235 1264 166 5.9 000A1441 KF

Gizo 15:00 15:22 1265 1306 289 6.1 000A1500 KF

Gizo 15:25 15:42 1307 1337 99 5.5 000B1525 KF

Gizo 15:45 15:54 1338 1354 228 6 000_1545 KF

Gizo 15:56 16:00 1355 1363 155 5.2 000A1556 KF

Gizo 16:06 16:23 1364 1388 198 5.4 000A1606 KF



Gizo 16:24 16:26 1389 1394 136 5.3 000_1624 KF

21/07/2005 Gizo 10:54 10:59 1633 1641 85 5 000_1054 KF

Gizo 11:01 11:08 1642 1654 44 5.3 000_1101 KF

Gizo 11:11 11:12 1655 1657 194 5 000_1111 KF

Gizo 11:14 1658 1664 228 5.3 000_1114 KF

Gizo 11:17 1665 1666 203 3 000A1117 KF

Gizo 11:20 11:21 1667 1668 30 5.6 000_1120 KF

Gizo 11:32 11:49 1669 1697 88 6 000_1132 KF

Gizo 11:54 12:00 1698 1710 256 5.6 000A1154 KF

Gizo 12:05 12:11 1711 1722 351 5 000_1205 KF

Gizo 12:14 12:19 1723 1732 212 4 000_1214 KF

Gizo 12:21 12:46 1733 1775 52 5 000_1221 KF

Gizo 12:48 13:08 1776 1776 278 4 000_1248 KF

Gizo 13:11 13:30 1777 1844 114 4.8 000A1311 KF

Gizo 13:32 13:39 1845 1858 331 5.6 000A1332 KF

Gizo 13:52 13:59 1859 1873 131 6 000B1352 KF

Gizo 14:01 14:05 1874 1882 233 6 000D1401 KF

Gizo 14:08 14:18 1883 1900 254 5 000A1408 KF

Gizo 14:24 14:31 1901 1991 74 5.3 000B1424 KF

Gizo 14:42 15:47 1992 2049 173 6 000A1442 KF

22/07/2005 Gizo 13:11 13:50 2050 2126 345 6 000B1311 JK

Gizo 16:06 17:00 2127 2233 187 6.5 000B1606 JK

Gizo 17:01 17:27 2234 2284 301 6.5 000_1701 JK

23/07/2005 Gizo 11:02 2285 11:19 2312 167 6 000_1102 JK large swell

Gizo 11:24 2313 11:28 2322 353 5.6 000B1124 JK

Gizo 11:35 2323 2326 319 000_1135 JK tight turn, DNP

Gizo 11:38 2327 11:50 2349 24 6 000_1137 JK

Gizo 11:53 2350 12:00 2364 300 6.2 000A1153 JK

Gizo 12:29 2365 12:32 2371 98 6 000_1228 JK

Gizo 12:38 2372 12:42 2380 271 5.5 000A1238 JK

Gizo 12:46 2381 12:49 2387 60 5.7 000A1245 JK



Gizo 12:51 2388 12:54 2394 222 5.9 000_1251 JK

Gizo 12:56 2395 12:58 2399 193 5.7 000_1256 JK

Gizo 13:05 2400 13:10 2409 131 5.9 000A1305 JK

Gizo 13:12 2410 13:16 2418 354 5.8 000_1312 JK

Gizo 13:19 2419 13:20 2420 6 000_1319 JK DNP

Gizo 13:22 2421 13:26 2429 144 5.3 000_1322 JK

Gizo 13:28 2430 13:32 2438 298 5.5 000_1327 JK

Gizo 13:34 2439 13:40 2451 179 5.7 000A1334 JK

Gizo 13:42 2452 13:45 2457 106 4.6 000_1342 JK

Gizo 13:45 2458 13:46 2459 640 5.4 000B1334 JK

Gizo 13:48 2460 13:49 2463 301 3.7 000_1347 JK

Gizo 13:54 2464 13:55 2467 53 5.9 000_1354 JK

Gizo 13:58 2468 13:59 2470 179 5.9 000_1358 JK

Gizo 13:59 2471 14:00 2473 181 5.8 000_1359 JK

Gizo 14:01 2474 14:03 2478 128 4.8 000E1401 JK

Gizo 14:06 2479 14:07 2481 287 5.67 000_1406 JK

Gizo 14:12 2482 14:19 2495 308 5.8 000B1412 JK

Gizo 14:21 2496 14:27 2508 106 5.8 000_1421 KF

Gizo 14:29 2509 14:33 2516 268 5.5 000A1429 KF

Gizo 14:36 2517 14:39 2523 123 5.9 000A1436 KF

Gizo 14:42 2523 14:44 2528 128 6.1 000B1442 KF

Gizo 15:00 2529 15:09 2545 101 5.8 000B1500 KF

Gizo 15:13 2546 15:33 2580 301 6.2 000_1513 KF

Gizo 15:36 2581 15:53 2610 131 4.7 000_1536 KF

Gizo 15:55 2611 15:59 2616 298 5.5 000A1555 KF

Gizo 16:01 2623 16:02 74 5 000A1601 KF

Gizo 16:08 16:12 2629 203 6 000_1608 KF

Gizo 16:13 2630 16:14 2632 27 5 000_1613 KF

Gizo 16:14 16:15 2634 106 5.2 000A1614 KF

Gizo 16:15 2635 16:17 2638 193 6.1 000B1615 KF

24/072005 Gizo 08:43 2639 09:34 2734 357 4.6 000_0843 JK



Gizo 09:44 2735 09:47 2740 325 5.2 000_0944 JK

Gizo 09:48 2741 09:52 2749 310 5.9 000_0948 JK delete turn at SOL

Gizo 09:55 2750 10:00 2760 106 5.9 000_0954 JK

Gizo 10:03 2761 10:05 2766 201 5.5 000A1003 JK

Gizo 10:08 2767 10:12 2775 318 5.6 000A1008 JK

Gizo 10:16 2776 10:21 2786 153 6.8 000_1016 JK

Gizo 10:22 2787 10:27 2795 323 5 000_1022 JK

Gizo 10:38 2796 10:58 2825 176 5.4 000_1038 KF

Gizo 11:05 2827 11:11 2838 144 7.1 000_1105 JK

Gizo 11:15 2839 11:21 2850 16 5 000A1115 JK

Gizo 11:24 2851 11:32 2864 153 5.6 000C1124 JK

Gizo 11:38 2865 11:47 2879 28 4.33 000A1138 JK

Gizo 11:52 2880 12:03 2900 114 5.5 000_1152 KF

Gizo 12:08 2901 12:10 2905 21 5 000A1208 KF

Gizo 12:13 2906 12:14 2908 173 5.5 000A1213 KF

Gizo 12:17 2909 12:19 2912 66 5.2 000A1217 KF

Gizo 12:27 2913 12:28 2916 91 5.6 000_1227 KF

Gizo 12:29 2917 12:30 2920 56 5.7 000_1229 KF

Gizo 12:32 2931 12:34 2925 199 5.7 000A1232 KF

Gizo 12:36 2926 12:38 2930 349 4.8 000A1236 KF

Gizo 12:41 2931 13:12 2985 150 4.8 000_1214 KF

Gizo 13:15 2986 13:24 3002 153 5.3 000A1315 KF

Gizo 13:27 3003 13:33 3014 2 5.6 000A1327 KF

Gizo 13:37 3015 13:53 3043 5 5.8 000A1337 KF

Gizo 13:56 3044 13:58 3048 108 5.4 000_1356 KF

Gizo 13:59 3049 14:01 3054 120 5.8 000A1359 KF

Gizo 14:13 3055 14:21 3072 162 5.6 000C1412 JK

Gizo 14:24 3073 14:31 3087 328 5.4 000C1424 JK

Gizo 14:34 3088 14:36 3092 118 6.1 000_1434 JK

Gizo 14:40 3093 14:45 3103 176 6 000A1440 JK



Gizo 14:48 3104 14:55 3115 303 5.9 000B1448 JK

Gizo 14:57 3116 15:02 3124 121 6 000_1457 JK

Gizo 15:04 3125 15:06 3129 336 5.2 000A1504 JK

Gizo 17:11 3130 17:16 3139 357 5.3 000_1711 JK

25/07/2005 Gizo 10:03 3140 11:01 3249 243 5.8 000A1002 JK large roll/swell approx. +/-10

Gizo 11:07 3250 11:18 3272 144 5.5 000_1107 JK large roll/swell

Gizo 11:21 3273 11:31 3291 305 5 000_1121 JK large roll/swell

Gizo 11:35 3292 11:41 3304 132 5.8 000A1135 JK large roll/swell

Gizo 11:43 3305 11:49 3317 351 6 000_1143 JK large roll/swell

Gizo 11:52 3318 11:54 3322 119 6.1 000A1152 JK large roll/swell

Gizo 13:04 3323 13:10 3334 69 6.2 000_1304 JK

Gizo 13:12 3335 13:14 3338 44 5.7 000A132 KF

Gizo 13:26 3339 13:27 3341 13 6.2 000_1326 KF

Gizo 3342 13:34 3345 125 5.8 KF

Gizo 13:36 3346 13:40 3352 109 5.3 000_1336 KF

Gizo 13:24 3353 13:42 3355 219 4 000_1324 KF DNP

Gizo 13:50 3356 13:51 3357 114 5.6 001_1350 KF

Gizo 13:35 3358 13:59 3365 124 6 000_1335 KF

system comparison test line

Gizo 14:10 3366 14:14 3374 287 5.2 000_1410 KF

system comparison test line

Gizo 15:08 3391 15:11 3395 313 5.7 001_1508 JK

Gizo 15:56 3396 15:57 3398 262 5.4 001_1556 JK

Gizo 15:59 3399 16:00 3401 70 5.85 001_1559 JK

26/07/2005 Gizo 13:41 3402 13:42 3404 302 6 001_1341 JK

Gizo 13:44 3405 13:46 3409 286 6.1 001_1344 JK

Gizo 13:49 3410 13:51 3414 52 4.3 001_1349 JK

Gizo 13:55 3415 13:56 3417 77 4.8 001A1355 JK tight turns on this line

Gizo 13:58 3418 13:59 3421 344 5.5 001_1358 JK

Noro 16:33 3422 16:39 3434 92 6 000_1633 JK

filling gap in W section of coverage



Noro 16:43 3435 16:49 3446 259 5.8 000_1643 JK


Noro 16:55 3447 16:59 3456 78 6.4 000_1655 JK


Arnavon 09:37 3457 10:00 3500 299 6 000_0937 JK

Arnavon 10:02 3501 10:15 3526 40 6 000B1002 JK

test line. Swell beam on. 15 deg roll.

Arnavon 10:17 3527 10:30 3551 310 6 000A1017 JK break off Arnavon survey.

29/07/2005 Honiara 13:13 3552 13:14 3555 5.7 6 001_1313 JK DNP / ship's SBES was on

Honiara 13:24 3556 13:27 3563 359 5.9 001_1324 JK patch test: roll

Honiara 13:56 3564 13:38 3571 184 8.9 001_1334 JK

DNP patch test: roll. DGPS dropped out / EDG2

Honiara 13:43 3572 13:48 3603 310 5.7 004_1343 JK

patch test: yaw/pitch, DGPS dropped out end of line

Honiara 13:52 3604 13:57 3613 120 6.1 004_1352 JK patch test: lat/pitch

Honiara 14:03 3614 14:08 3643 300 6.1 002_1403 JK patch test: yaw

Honiara 14:12 3644 14:19 3673 119 3.4 004_1412 JK patch test: lat

Honiara 14:35 3674 14:38 3680 180 5.8 001_1435 JK patch test: roll

solomon islands technical report

Documents