Skip to main content
U.S. flag

An official website of the United States government

Map of Puerto Rico Seismic Activity

Detailed Description

Map of seismic activity in Southwestern Puerto Rico. Twelve Magnitude 5 and larger earthquakes (black and white beach balls on map); more than 250 line-kilometers of high-resolution multichannel sparker seismic reflection data collected during March 7-13, 2020 (black lines on map); identification of numerous faults (red marks on map); unusual seafloor lineaments (marked in yellow on map) are interpreted to have been formed over many millennia.  


Public Domain.