An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Latest Earthquakes | Chat Share
Video camera snapshot at Tres Palmas in Rincón, on the west coast of Puerto Rico.
Using Video Imagery to Study Wave Dynamics: Tres Palmas