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NOAA Photo Library Image - map00108

Francis Shepard's diagram showing worldwide distribution of known submarine canyons. The predominance of known canyons off the United States and the Philippines is the result of work of the United States Coast and Geodetic Survey and its development of the radio-acoustic ranging navigation system prior to WW II. Published in Geographical Review, July, 1938.

Image ID: map00108, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Credit: NOAA Central Library Historical Collection

High Resolution Photo Available

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Last Updated:
November 10, 2017