What is ETOPO2?
The ETOPO2 is a combination of satellite altimetry observations, shipboard echo-sounding measurements, data from the Digital Bathymetric Data Base Variable Resolution and data from the GLOBE project which has a global digital elevation model.
Where in the Atlantic Ocean is the bathymetry the deepest?
the Puerto Rico Trench
The deepest part of the Atlantic Ocean is in the Puerto Rico Trench, off the coast of Puerto Rico. It has recorded depths of 28,232 feet.
How can I download data from ETOPO1?
Go to the ETOPO1 Web site (http://www.ngdc.noaa.gov/mgg/global/global.html). If you want the ice surface data, save the following file to a directory on your computer and then unzip it: ETOPO1 Ice Surface > grid-registered > binary > f4 format.
What is the difference between bathymetry and hydrography?
Bathymetry is the study of the “beds” or “floors” of water bodies, including the ocean, rivers, streams, and lakes. Hydrography includes not only bathymetry, but also the shape and features of the shoreline; the characteristics of tides, currents, and waves; and the physical and chemical properties of the water itself.
What does a high resolution model called the ETOPO1 do?
ETOPO1 was developed to improve the resolution and accuracy of the ETOPO2v2 2 arc-minute Global Relief Model, and was designed to support tsunami forecasting, modeling and warning, as well as ocean circulation modeling and Earth visualization.
What is a bathymetric map used for?
Bathymetric maps can help scientists determine where fish and other marine life feed, live, and breed. Bathymetric data is also used to create maps of coral habitats to assist in conservation and monitoring.
What is the ETOPO2 data?
The ETOPO2 is a combination of satellite altimetry observations, shipboard echo-sounding measurements, data from the Digital Bathymetric Data Base Variable Resolution and data from the GLOBE project which has a global digital elevation model. This dataset uses green, yellow, orange, red and white to denote increasing elevation of the land.
What is ETOPO1 (Earth topography 1 arc minute)?
ETOPO1 (Earth topography 1 arc minute) is the current global topographic data set. You can Thin it to get equivalents to ETOPO2 (25% of the file size) or ETOPO5 (4% of the file size). Even ETOPO5 cannot be displayed on screen with full resolution , so you only need ETOPO1 when zooming in significantly.
What is the horizontal and vertical precision of etopo2v2?
The horizontal grid spacing is 2-minutes of latitude and longitude (1 minute of latitude = 1.853 km at the Equator). The vertical precision is 1 meter. What is the projection of ETOPO2v2?
What is the difference between GTOPO30 and ETOPO5?
GTOPO30 covers only the continents. The marine data primarily comes from radar altimeters. ETOPO5 was initially generated by the US Navy from a digital data base of land and sea-floor elevations on a 5-minute latitude/longitude grid.