New map of Earthquake distribution

"Earthquake Zones" by Captain Nicholas Heck, U.S. Coast and Geodetic Survey. Heck first produced a world seismicity map showing the activity on the Mid-Atlantic Ridge in 1932. (Courtesy of NOAA Photo Library.)

Related Links

History: Soundings, Sea-Bottom, and Geophysics Quotations

History: Quotations

NOAA Ocean Explorer Gallery: History