Mode of access: Internet from the USGS web site. Address as of 4/8/08: http://pubs.usgs.gov/sim/2004/2848/; current access via PURL.
Relief shown by shading. Depths shown by shading and gradient tints. Title from PDF title screen (viewed on Apt. 8, 2008). "Landsat satellite image compiled by Benjamin M. Sleeter, U.S. Geological Survey, Mento Park. Bathymetry data compiled from a digital version of NOAA ... by Florence Wong." In lower right margin: 125 years of science for America, 1879-2004. Includes location map, tables of "Magnitude 5.0 and greater earthquakes" and "Explanation," source-material notes, and graph.