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GEBCO is the only intergovernmental body with a mandate to map the whole ocean floor. At the beginning of the project, only 6 per cent of the world's ocean bottom had been surveyed to today's standards; as of June 2022, the project had recorded 23.4 per cent mapped. About 14,500,000 square kilometres (5,600,000 sq mi) of new bathymetric data ...
The seafloor topography near the Puerto Rico Trench Present-day Earth bathymetry (and altimetry). Data from the National Centers for Environmental Information's TerrainBase Digital Terrain Model. Starting in the early 1930s, single-beam sounders were used to make bathymetry maps.
The seafloor topography near the Puerto Rico Trench Present-day Earth bathymetry (and altimetry). Data from the National Centers for Environmental Information's TerrainBase Digital Terrain Model. Starting in the early 1930s, single-beam sounders were used to make bathymetry maps.
Interactive maps, databases and real-time graphics from The Huffington Post. HuffPost Data. ... Browse, copy and fork our open-source software;
Altimetry is the measurement of altitude or elevation above sea level. Common techniques are: [8] [9] Surveying, especially levelling. Global Navigation Satellite System (such as GPS), where a receiver determines a location from pseudoranges to multiple satellites.
TOPEX/Poseidon was a joint satellite altimeter mission between NASA, the U.S. space agency; and CNES, the French space agency, to map ocean surface topography. Launched on August 10, 1992, it was the first major oceanographic research satellite. TOPEX/Poseidon helped revolutionize oceanography by providing data previously impossible to obtain.
SWOT builds on a long-standing partnership between NASA and CNES to measure the surface of the ocean using radar altimetry. This partnership began with the TOPEX/Poseidon mission (launched in 1992) and continued with the Jason series. SWOT brings together the hydrology and oceanography communities and will extend the precise, high-resolution ...
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