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Map Layer Info

     
 
Topographic and Bathymetric Shaded Relief of North America

What this map layer shows:

The shape and elevation of the land surface of North America, as well as the depth of the ocean waters around North America, with relief enhanced by shading.
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Background Information
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Topographic shaded relief shows the land surface, while bathymetric shaded relief shows underwater terrain. The Topographic and Bathymetric Shaded Relief of North America image was created by combining separate shaded-relief images of land and bathymetry. The land areas came from the National Atlas Color North America Shaded Relief - 1 Kilometer Resolution image, which was derived from GTOPO30 elevation data. The bathymetry came from the National Atlas Bathymetric Shaded Relief of North America image, which was derived from ETOPO2 2-minute data. This image was produced by the U.S. Geological Survey.

The three-dimensional appearance is achieved by shading the image as if there is a light source in the northwest. Shaded relief images are used to give a general idea of the shape of the land or underwater surface and for a wide variety of scientific research endeavors including hydrologic modeling, petroleum exploration, and studies of geologic processes.

The Topographic and Bathymetric Shaded Relief of North America map layer is a color shaded-relief image showing the terrain of North America and the depth of ocean waters around North America. The image is intended for visual purposes only; the original GTOPO30 and ETOPO2 data must be used for conducting analysis and determining elevation and depth values.

 

Geology
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Shaded Relief Land and Ocean