Категория:Эмпирические данные про рельеф Земли: различия между версиями
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[https://en.wikipedia.org/wiki/Global_Relief_Model#Earth2014_.282015.29 Earth2014 provides five different layers of height data, comprising Earth’s surface (lower interface of the atmosphere), topography and bathymetry of the oceans and major lakes, topography, bathymetry and bedrock, ice-sheet thicknesses and rock-equivalent topography. The Earth2014 global grids are provided as heights relative to the mean sea level] | [https://en.wikipedia.org/wiki/Global_Relief_Model#Earth2014_.282015.29 Earth2014 provides five different layers of height data, comprising Earth’s surface (lower interface of the atmosphere), topography and bathymetry of the oceans and major lakes, topography, bathymetry and bedrock, ice-sheet thicknesses and rock-equivalent topography. The Earth2014 global grids are provided as heights relative to the mean sea level] | ||
− | + | freely available via http://ddfe.curtin.edu.au/models/Earth2014/ | |
[http://ddfe.curtin.edu.au/models/Earth2014/Hirt_Rexer2015_Earth2014.pdf While the previously described relief models provide elevations of the topography or bedrock with respect to the mean sea level, shape models represent the geometry of the planet via the planetary radius (i.e., distances Pr between the geocenter and the surface points). As such, relief and shape models differ by the sum of (a) the ellipsoidal radius, and (b) the geoid height, with the latter being an approximation of the separation between the mean sea level and the ellipsoid surface... Geoid undulations N were obtained from the EGM96 geopotential model (Lemoine et al. 1998)... We note that the choice of the geoid model is not too much a concern for global relief modelling, given the differences between present geoid models are mostly at or less the 1m‐level... Earth2014 is formally independent from ETOPO1... Given that ETOPO1 is based on a 2008 measured/estimated 2 arc‐min bathymetry grid by Scripps Institution of Oceanography... RET represents ice and water masses as mass‐equivalent layers of rock, based on the mass compression procedure] | [http://ddfe.curtin.edu.au/models/Earth2014/Hirt_Rexer2015_Earth2014.pdf While the previously described relief models provide elevations of the topography or bedrock with respect to the mean sea level, shape models represent the geometry of the planet via the planetary radius (i.e., distances Pr between the geocenter and the surface points). As such, relief and shape models differ by the sum of (a) the ellipsoidal radius, and (b) the geoid height, with the latter being an approximation of the separation between the mean sea level and the ellipsoid surface... Geoid undulations N were obtained from the EGM96 geopotential model (Lemoine et al. 1998)... We note that the choice of the geoid model is not too much a concern for global relief modelling, given the differences between present geoid models are mostly at or less the 1m‐level... Earth2014 is formally independent from ETOPO1... Given that ETOPO1 is based on a 2008 measured/estimated 2 arc‐min bathymetry grid by Scripps Institution of Oceanography... RET represents ice and water masses as mass‐equivalent layers of rock, based on the mass compression procedure] |
Версия 18:29, 11 декабря 2017
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
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Earth2014[править]
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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