Категория:Эмпирические данные про рельеф Земли
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Geoid and Mean sea level differences[править]
In aviation, the ellipsoid known as World Geodetic System 84 is increasingly used to define heights; however, differences up to 100 metres (328 feet) exist between this ellipsoid height and mean tidal height. The alternative is to use a geoid-based vertical datum such as NAVD88... The location-dependent, but persistent in time, separation between mean sea level and the geoid is referred to as (stationary) ocean surface topography. It varies globally in a range of ± 2 m.
Data[править]
Aster instrument of the Terra satellite is also freely available for 99% of the globe, and represents elevation at 30 meter resolution... When land topography and bathymetry is combined, a truly Global Relief Model is obtained... ALOS provides since 2016 a global 1-arc second DSM free of charge... OpenTopography is a community access resource of high-resolution
Earth2014[править]
folder GMT has data in wikipedia:Generic Mapping Tools format
The Earth2014 global topography and relief model [17] provides layered topography grids at 1 arc-minute resolution. Other than SRTM30plus, #Earth2014 provides information on ice-sheet heights and bedrock (that is, topography below the ice) over Antarctica and Greenland
freely available via http://ddfe.curtin.edu.au/models/Earth2014/
Ground heights[править]
Sea depths[править]
To map some 140 million square miles of sea floor, the Seabed 2030 project is currently recruiting around 100 ships that will circumscribe the globe for 13 years. The team, united under the non-profit group General Bathymetric Chart of the Oceans (GEBCO)
Seafloor gravity maps[править]
Explore The World's Most Detailed Map Of The Seafloor, Released Today Robbie Gonzalez 10/03/14 8:00p
from Google[править]
shelfs[править]
- Ngdc
- https://maps.ngdc.noaa.gov/viewers/bathymetry/ has 10 m depth contours from GEBCO_2014!!! The GEBCO_2014 Grid does not contain detailed information in shallower water areas.
- USGS explorer shows shelfs with Google watermark.
- Map of the Norwegian continental shelf - visual horizontals at 100м, 200м, 300м
some regions[править]
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