mapping coral reefs from space...great barrier reef mapping •entire shallow water gbr at 30m...
TRANSCRIPT
![Page 1: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/1.jpg)
© EOMAP, 2020
Mapping Coral Reefs From SpaceEmily Twiggs
Senior Project ScientistEOMAP Australia
AusSeabed Webinar Series
30th July 2020
![Page 2: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/2.jpg)
© EOMAP, 2020
Rockets and Sensors
![Page 3: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/3.jpg)
2m WorldView-2/3 (2009/2014)
10m Sentinel-2A/B (2015/2017)
Blue (2)GreenRed and red edge YellowNIR (2)1 day revisit
BlueGreenRedNIR5 day revisit
© EOMAP, 2020
Satellite Sensors
15m Landsat-8 (2013)Coastal BlueGreenRedNIR16 day revisit
![Page 4: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/4.jpg)
© EOMAP, 2020
Radiative Transfer
Image pixel = f(atmosphere, adjacency, water surface, absorbers and backscatters', seafloor, water depth, sea state, sun and sensor geometry, SNR ratio)
Image courtesy of the Centre for Spatial Environmental Research, University of Queensland
Platform type
Sensor type
WaterSurface Water colour
Water colour and depth
Effects ofdepth
Sensor type
![Page 5: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/5.jpg)
© EOMAP, 2020
Modular Inversion Processor (MIP)
seagrass
corals
sediment
macroalgal
Coral rubble
Water quality
Satellite-derived bathymetry (SDB)
Seafloor reflectance (colour)
Benthic habitats
Texture
![Page 6: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/6.jpg)
© EOMAP, 2020
Use cases
• Hydrographic mapping - safety at sea
• Environmental monitoring
• Baseline and ongoing habitat mapping
• Detecting change
• Pipeline crossings for oil & gas
• Coastal development
• Hydrodynamic modelling
• Resolving coastal boundary disputes
![Page 7: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/7.jpg)
© EOMAP, 2020
Managing Coral Reefs in the Anthropocene• ‘Earth Observation’ addresses some of the challenges
• Many reefs have no comprehensive maps to support research
• What essential layers/maps do we need to monitor change and support management?
• Improved spatial and temporal information on bathymetry, reflectance (colour) and habitats
![Page 8: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/8.jpg)
Great Barrier Reef Mapping
• Entire shallow water GBR at 30m resolution (2013)
• Selected very high resolution surveys
• Integrated in GBR30 and GBR100 grids (Project 3D-GBR, Robin Beaman JCU, GA, AHO) www.deepreef.org
![Page 9: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/9.jpg)
![Page 10: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/10.jpg)
© EOMAP, 2020
2017: 237 reefs Cairns Management Area
2016: 20 reefs Capricorn-Bunker
2000-2018: Heron Reef
(Coral Reefs, 2020)
![Page 11: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/11.jpg)
Reef Slope, Crest, flat, lagoon
Geomorphic zonation
Coral/Algae, Rock, Rubble, Sand
Benthic Habitat Type
Massive, Branching, Plate
Predicted Coral type habitat
Satellite imagery Field data Geomorphic + benthos +impacts knowledge
Object Based AnalysisMaping and Modelling
Water depth Wave climate Slope angleIN
PU
T D
ATA
Object-based analysis: TrimbleeCognition 9.3 software
![Page 12: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/12.jpg)
© EOMAP, 2020
GBR Mapping
![Page 13: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/13.jpg)
© EOMAP, 2020
GBR MappingBenthic Habitat Type
![Page 14: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/14.jpg)
© EOMAP, 2020
Landsat30 m pixels
16 days
Sentinel 210 m pixels
5 days
Sentinel 2:
- 10m pixels
- 5 days revisit
- Scenes 2018- 2019
To derive:
- Surface reflectance (2019)
- Water depth (2019)
- Geomorphology (2020)
- Bottom type (2021)
- Coral type (2021)
‘3D live habitats for the full extent of the GBR’
![Page 15: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/15.jpg)
© EOMAP, 2020
Sub-surface Reflectance Seafloor Reflectance Bathymetry
![Page 16: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/16.jpg)
© EOMAP, 2020
![Page 17: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/17.jpg)
© EOMAP, 2020
Bathymetry
![Page 18: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/18.jpg)
© EOMAP, 2020
• ddd
Legend
20171023_GBR_CCMR_geomorphic_name
Geomorphic 20170607
Deep Slope 10 m + Windward
Deep Slope 10 m + Leeward
Slope 3- 10 m Windward
Reef Crest
Outer Reef Flat
Inner Reef Flat
Shallow Lagoon
Open Comlex Lagoon
Deep Lagoon (Not Reef Top)
Slope 3- 10 m Leeward
Plateau 3-10 m
Plateau 10 m +
PatchReefs
Small Reef
Land
Geomorphology
![Page 19: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/19.jpg)
© EOMAP, 2020
Benthic HabitatLegend
20171023_GBR_CCMR_Benthic_name
<all other values>
Benthic
Coral/Algae
Rock
Rubble
Sand
Slope 3-20 m MSL
Small Reef
![Page 20: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/20.jpg)
© EOMAP, 2020
Bathymetry
![Page 21: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/21.jpg)
© EOMAP, 2020
UQ habitats
• ddd
Legend
20171023_GBR_CCMR_geomorphic_name
Geomorphic 20170607
Deep Slope 10 m + Windward
Deep Slope 10 m + Leeward
Slope 3- 10 m Windward
Reef Crest
Outer Reef Flat
Inner Reef Flat
Shallow Lagoon
Open Comlex Lagoon
Deep Lagoon (Not Reef Top)
Slope 3- 10 m Leeward
Plateau 3-10 m
Plateau 10 m +
PatchReefs
Small Reef
Land
Geomorphology
![Page 22: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/22.jpg)
© EOMAP, 2020
Legend
20171023_GBR_CCMR_Benthic_name
<all other values>
Benthic
Coral/Algae
Rock
Rubble
Sand
Slope 3-20 m MSL
Small Reef
Benthic Habitat
![Page 23: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/23.jpg)
© EOMAP, 2020
UQ habitats
• ddd
Legend
20171023_GBR_CCMR_geomorphic_name
Geomorphic 20170607
Deep Slope 10 m + Windward
Deep Slope 10 m + Leeward
Slope 3- 10 m Windward
Reef Crest
Outer Reef Flat
Inner Reef Flat
Shallow Lagoon
Open Comlex Lagoon
Deep Lagoon (Not Reef Top)
Slope 3- 10 m Leeward
Plateau 3-10 m
Plateau 10 m +
PatchReefs
Small Reef
Land
Geomorphology
![Page 24: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/24.jpg)
© EOMAP, 2020
Mapping from Space• Map shallow, clear waters globally
• Reliable and cost-effective information: • Bathymetry• Reflectance• Benthic habitats
• Remote, often inaccessible
• Large areas frequently and quickly
• Very high-resolution and accurate
• Complimentary
![Page 25: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/25.jpg)
© EOMAP, 2020
• Impressive increase in the use of satellite-derived mapping for coral reefs - hydrographic mapping and environmental monitoring
• Advances in sensor technology, processing algorithms and machine learning will continue to drive forward capabilities for coral reef mapping
• Ultimately supporting management and conservation!
Closing Remarks
![Page 27: Mapping Coral Reefs From Space...Great Barrier Reef Mapping •Entire shallow water GBR at 30m resolution (2013) •Selected very high resolution surveys •Integrated in GBR30 and](https://reader035.vdocument.in/reader035/viewer/2022070111/604eda674f484d0bf920c83c/html5/thumbnails/27.jpg)
© EOMAP, 2020
Earth Observation Mapping since 2006