ETOPO2 DATA DOWNLOAD FREE

Is the sea floor really that bumpy, and what are the long, straight lines on the ocean floor that converge on places like San Diego and Bermuda? It has recorded depths of 28, feet. The digitized contours were analyzed with surface-fitting software to produce a digital bathymetric grid registered to the same coordinate system as the rest of ETOPO2v2, and made consistent with the surrounding land elevations -- the surface of the Caspian Sea is approximately 29m below Mean Sea Level. Other notable features on the seafloor are the impressive trenches that have formed where one tectonic plate dives beneath another. ETOPO2v2 is a database, not a program. Topography and Bathymetry shaded colors.

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Topography and Bathymetry color enhanced. The first row of 10, x 30 cells in ETOPO2 redundantly repeated the same data value, centered on the north pole. Data were sampled to 2' cell averages for areas adjacent to dzta 48 conterminous states, Hawaii, and Puerto Rico. In US waters and some other areas, local high-resolution survey data have been used where available.

What do the grid data actually represent? The satellite altimetry works best in deep water and can distinguish many undersea features that are not otherwise surveyed directly. The longest mountain range in the world, the global mid-oceanic ridge system, can be found on the ocean floors and runs for approximately 37, miles. Is the sea floor really that bumpy, and what are the long, straight lines on the ocean floor that converge on places like San Diego and Bermuda?

It covers all of the world's land masses at a resolution of 0. The ridge joins the Indian Ridge which is to the east of Africa. GLOBE data were sampled to 2' cell averages for all land areas. All lake depth data were made consistent with surrounding land elevations and each lake's mean level datum. All of these ridges are the daat of plate tectonics.

ETOPO2v2 is available in both a downloadable cell-centered version, named ETOPO2v2c pixel registered, where the cell boundaries are lines of even minutes of latitude and longitude, centered on intersections of lines of odd minutes of latitude and longitude and a grid-centered, version, available via design-a-grid with cell boundaries defined by lines of odd minutes of latitude and longitude, meaning that cells were centered on the integer multiples of 2 minutes [even minutes] of latitude and longitude.

Earth Topography and Bathymetry shows the intricate topography and bathymetry of the Earth. Notable Features Mount Everest: Other notable features on the seafloor are the impressive trenches that have formed where one tectonic plate dives beneath another. The straight lines are where direct shipborne measurements have been included in the data as "ground truth". The vertical precision is 1 meter. Bathymetric data for the Caspian Sea were obtained as digitized contours from the Caspian Environment Programme.

The digitized contours were analyzed with surface-fitting software to produce a digital bathymetric grid registered to the same coordinate system as the rest of ETOPO2v2, and made consistent with the surrounding land elevations -- the surface of the Caspian Sea is approximately 29m below Mean Sea Level. The cell-centered grid is the authoritative version. Bathymetry data for the Caspian Sea were obtained as digitized depth contours from the Caspian Environment Programme website.

It has recorded depths of 28, feet. Great Lakes bathymetric data were sampled to 2' cell averages for all five Great Lakes.

Indian Ocean modified ETOPO2 / ETOPO5

The Mid-Atlantic Ridge, which cuts through the Atlantic Ocean, has peaks that break the waters surface to form islands. Himalayas, Rockies, Andes, Alps Global mid-oceanic ridge system: All of the mid-ocean ridges of the world can be regarded as a continuous oceanic ridge system. The grid values represent the elevation at the grid intersections at odd multiples of 2 minutes of latitude and longitude, averaged over the cell's area. World Data Service for Geophysics, Boulder. The "orange-peel" look of the sea floor may be an artifact of the satellite altimetry dsta and its interpretation of ocean surface waves.

In shallow water, the gravitational effects that can be measured from the satellite are too small to be reliable.

ETOPO2v2 2 minute Worldwide Bathymetry/Topography Grids | NCEIv

You will need imaging or analysis software to use the data. The grid-centered version was derived from the cell-centered grid and the conversion produces slightly flattened relief.

These measurements help calibrate, but do not correspond percent to the radar altimetry. You have 0 datasets in your.