Global Satellite-Based Coastal Bathymetry from Waves
The seafloor—or bathymetry—of the world’s coastal waters remains largely unknown despite its primary importance to human activities and ecosystems. Here we present S2Shores (Satellite to Shores), the first sub-kilometer global atlas of coastal bathymetry based on depth inversion from wave kinematics...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/22/4628 |
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| author | Rafael Almar Erwin W. J. Bergsma Gregoire Thoumyre Mohamed Wassim Baba Guillaume Cesbron Christopher Daly Thierry Garlan Anne Lifermann |
| author_facet | Rafael Almar Erwin W. J. Bergsma Gregoire Thoumyre Mohamed Wassim Baba Guillaume Cesbron Christopher Daly Thierry Garlan Anne Lifermann |
| author_sort | Rafael Almar |
| collection | DOAJ |
| description | The seafloor—or bathymetry—of the world’s coastal waters remains largely unknown despite its primary importance to human activities and ecosystems. Here we present S2Shores (Satellite to Shores), the first sub-kilometer global atlas of coastal bathymetry based on depth inversion from wave kinematics captured by the Sentinel-2 constellation. The methodology reveals coastal seafloors up to a hundred meters in depth which allows covering most continental shelves and represents 4.9 million km<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula> along the world coastline. Although the vertical accuracy (RMSE 6–9 m) is currently coarser than that of traditional surveying techniques, S2Shores is of particular interest to countries that do not have the means to carry out in situ surveys and to unexplored regions such as polar areas. S2Shores is a major step forward in mitigating the effects of global changes on coastal communities and ecosystems by providing scientists, engineers, and policy makers with new science-based decision tools. |
| first_indexed | 2024-03-10T05:06:06Z |
| format | Article |
| id | doaj.art-7758c8f2794a4670a50d98a0fe4a4365 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T05:06:06Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-7758c8f2794a4670a50d98a0fe4a43652023-11-23T01:20:39ZengMDPI AGRemote Sensing2072-42922021-11-011322462810.3390/rs13224628Global Satellite-Based Coastal Bathymetry from WavesRafael Almar0Erwin W. J. Bergsma1Gregoire Thoumyre2Mohamed Wassim Baba3Guillaume Cesbron4Christopher Daly5Thierry Garlan6Anne Lifermann7Laboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS), Université de Toulouse/CNRS/CNES/IRD, 31400 Toulouse, FranceFrench Space Agency (CNES), 75039 Paris, FranceLaboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS), Université de Toulouse/CNRS/CNES/IRD, 31400 Toulouse, FranceLaboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS), Université de Toulouse/CNRS/CNES/IRD, 31400 Toulouse, FranceLaboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS), Université de Toulouse/CNRS/CNES/IRD, 31400 Toulouse, FranceLaboratoire d’Etudes en Géophysique et Océanographie Spatiales (LEGOS), Université de Toulouse/CNRS/CNES/IRD, 31400 Toulouse, FranceService Hydrographique et Océanographique de la Marine (SHOM), 29240 Brest, FranceFrench Space Agency (CNES), 75039 Paris, FranceThe seafloor—or bathymetry—of the world’s coastal waters remains largely unknown despite its primary importance to human activities and ecosystems. Here we present S2Shores (Satellite to Shores), the first sub-kilometer global atlas of coastal bathymetry based on depth inversion from wave kinematics captured by the Sentinel-2 constellation. The methodology reveals coastal seafloors up to a hundred meters in depth which allows covering most continental shelves and represents 4.9 million km<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula> along the world coastline. Although the vertical accuracy (RMSE 6–9 m) is currently coarser than that of traditional surveying techniques, S2Shores is of particular interest to countries that do not have the means to carry out in situ surveys and to unexplored regions such as polar areas. S2Shores is a major step forward in mitigating the effects of global changes on coastal communities and ecosystems by providing scientists, engineers, and policy makers with new science-based decision tools.https://www.mdpi.com/2072-4292/13/22/4628coastal oceansatellite earth observationwave kinematics bathymetryremote sensingoptical imagery |
| spellingShingle | Rafael Almar Erwin W. J. Bergsma Gregoire Thoumyre Mohamed Wassim Baba Guillaume Cesbron Christopher Daly Thierry Garlan Anne Lifermann Global Satellite-Based Coastal Bathymetry from Waves Remote Sensing coastal ocean satellite earth observation wave kinematics bathymetry remote sensing optical imagery |
| title | Global Satellite-Based Coastal Bathymetry from Waves |
| title_full | Global Satellite-Based Coastal Bathymetry from Waves |
| title_fullStr | Global Satellite-Based Coastal Bathymetry from Waves |
| title_full_unstemmed | Global Satellite-Based Coastal Bathymetry from Waves |
| title_short | Global Satellite-Based Coastal Bathymetry from Waves |
| title_sort | global satellite based coastal bathymetry from waves |
| topic | coastal ocean satellite earth observation wave kinematics bathymetry remote sensing optical imagery |
| url | https://www.mdpi.com/2072-4292/13/22/4628 |
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