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Woods Hole Coastal and Marine Science Center

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USGS Coastal and Marine Geology Program

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  1. St. Petersburg Coastal and Marine Science Center
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Bathymetric Survey Puerto Rico Trench/NOAA


Puerto Rico and the Virign Island are located at an active plate boundary between the North American plate and the northeast corneter of the Caribbean plate. Plate movements have caused large magnitutde earthquakes and devastating tsunamis. The risk to life and economic infrastructure is high, because 4 million U.S. citizens live along the coastlines of Puerto Rico and the Virgin Islands.


Principal: Uri ten Brink (


Our long-term objective is to provide the understanding needed to approach the problems of assessment, education and mitigation of tectonic hazards in Puerto Rico and the Virgin Islands. Our short term objective is to analyze the relevant existing data, to acquire high-resolution swath (bathymetry and backscatter), topographic, and seismic reflection data to define fault systems acress the region.

Start Date of project:


End date of project:


Project Location:

Puerto Rico


Anaylsis of relevant existing geological and geophysical data and analysis of earthquake records are in progress culminating in a submitted paper, in two prepared m/s, and in several abstracts. NOAA has committed to funding 6 days of multibeam bathymetry data in the Puerto Rico Trench. We plan to dive along the edge of coral reefs surrounding Puerto Rico and document the depth to different depths of terraces to investigate whether the coastline is undergoing vertical tectonic movements.


Impact of this work is intended to improve the safety of residents and to protect coastal resources in the Puerto Rico/Virgin Islands regional with regard to earthquaked and tsunamis.

February 9, 2006

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