Geodesy & Ocean Disasters Sensors (GODS)

Paroscientific, Inc. & Quartz Seismic Sensors, Inc.

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By

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Geodesy & Ocean Disasters Sensors (GODS)Geodesy & Ocean Disasters Sensors (GODS)

• Absolute Pressure Gauges

• Triaxial Accelerometer

• Nano-Resolution Electronics

• A-0-A In-situ Calibration Method

Earthquake & Tsunami Warnings

Geodetic Measurements of Earth Movements (Depth & Tilt)

Measurement Platforms• Boreholes

• Underwater Vehicles

• Inverted Echo Sounders

• Ocean Bottom Recorders

• Cabled Systems (Internally & Externally Mounted)

GODS Construction

• 2 Digiquartz®

Absolute Pressure Gauges (APG)

• 1 Triaxial Accelerometer

• 1 Digiquartz®

Barometer

• 3 Nano-resolution Processing Electronics

• 1 Three-way Ball Valve for A-0-A Calibration

Oceanic & Seismic Sensors

Temperature-compensated & Linearized RS-232 Outputs

• Seawater Pressures (A) and Temperatures from each APG

• X-Y-Z plus total Vector Accelerations and Accelerometer Temperature

• Interior Housing Barometric Pressures (0) and Barometer Temperature

• All sensors can be synchronized and time-stamped using PPS inputs

DONET Bottom Pressure during the 2011 Tohoku Earthquake

A-2

A-3

A-4

B-5

B-6

B-8

C-9

D-16

E-17

E-18

Plot courtesy of Dr. Hiroyuki Matsumoto

Tohoku Tsunami Measured in Monterey Tohoku Tsunami Measured in Monterey California with NanoCalifornia with Nano--Resolution Depth SensorResolution Depth Sensor

M9 Honshu Earthquake 11 Mar 2011 05:50-06:50 UTCRecorded with Nano-Resolution Accelerometer in Seattle, WA USA

0 1 2 3 4 5 6 7 8 9 10

minutes

50 m

icro

-g p

er d

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ion

33--9 Precursor to 39 Precursor to 3--11 Tsunami11 Tsunami

Plot courtesy of Dr. Ryota Hino

Tilt Measurements Using 3G Range Quartz Triaxial Tilt Measurements Using 3G Range Quartz Triaxial Accelerometer with Internal Alignment MatrixAccelerometer with Internal Alignment Matrix

Plot Courtesy of Dr. Earl Davis

AA--00--A InA In--situ Calibration Methodsitu Calibration Method for Improved Geodetic Measurementsfor Improved Geodetic Measurements

Depth Sensor Stability at 10,000 meters Referenced to InternalOBS Atmospheric Pressure Using A-0-A Calibration Method

Depth Sensor Stability at 10,000 meters Referenced to InternalOBS Atmospheric Pressure Using A-0-A Calibration Method

Drift at Full Scale (A = 100 MPa), Drift at 0 (8 points linearly connected) & Residuals

-35

-30

-25

-20

-15

-10

-5

0

5

11/17/2014 12/7/2014 12/27/2014 1/16/2015 2/5/2015 2/25/2015 3/17/2015 4/6/2015 4/26/2015Time [Date]

Drif

t rel

ativ

e to

firs

t A-0

-A [p

pm]

-2

-1.5

-1

-0.5

0

0.5

1

1.5

Res

idua

ls [p

pm]

Drift of FS, 0, Span (FS - 0), & Temp, average of 19 sensors

-18

-16

-14

-12

-10

-8

-6

-4

-2

0

2

4

4/19/16 4/26/16 5/3/16 5/10/16 5/17/16 5/24/16 5/31/16 6/7/16 6/14/16 6/21/16 6/28/16 7/5/16 7/12/16 7/19/16 7/26/16 8/2/16 8/9/16 8/16/16 8/23/16

Date

Drif

t rel

ativ

e [c

m H

2O]

20

21

22

23

24

25

Tem

p [C

]

Depth Sensor Stability at 3,000 meters Referenced to Internal OBS Atmospheric Pressure Using A-0-A Calibration Method

Depth Sensor Stability at 3,000 meters Referenced to InternalDepth Sensor Stability at 3,000 meters Referenced to Internal OBS Atmospheric Pressure Using AOBS Atmospheric Pressure Using A--00--A Calibration MethodA Calibration Method

GODS Sensing Modules Provide:GODS Sensing Modules Provide:

Improved disaster warning times for tsunamis and earthquakes

Improved geodetic measurements for scientific research and predictions of natural disasters

Low-cost measurement solutions for new and existing cabled, remote, and mobile platforms

Improved disaster warning times for tsunamis and earthquakes

Improved geodetic measurements for scientific research and predictions of natural disasters

Low-cost measurement solutions for new and existing cabled, remote, and mobile platforms