Many factors come into play in tsunami formation, including the size and type of an earthquake and how much the quake has ruptured the seafloor.”. There are few land areas or islands to block a tsunami generated near the Puerto Rico Trench from entering the Atlantic Ocean. The rate at which these plates come together is similar to the rate at which a human fingernail grows. Most never get reported on, because they are too weak to be felt or, even if they could be felt, are too far away from human populations to cause any damage, or at least any significant damage. A map showing the epicentre (star) of the magnitude 7.7 quake in the Caribbean on the 28th January, ... [+] with the ruptured fault roughly encompassed by the innermost orange boundary. Established in 1930 on a recommendation from the National Academy of Sciences, the Institution operates the U.S. National Deep Submergence Facility that includes the deep-diving submersible Alvin, a fleet of global ranging ships and smaller coastal vessels, and a variety of other tethered and autonomous underwater vehicles. Colored dots denote the depth of earthquakes from shallow (light yellow) to deep (dark red). Because of its high population density and extensive development near the coast, Puerto Rico has a significant risk for earthquakes and tsunamis. More powerful earthquakes also happen far less frequently than less powerful ones. Second misconception: “There are a lot of earthquakes happening around the world at the moment, right?”. There are no active volcanoes in Puerto Rico and virgin islands. In contrast, the Caribbean plate farther east overrides the North American plate, creating the island arc of the Lesser Antilles with its active volcanoes. In a new study published December 24, 2004 in the Journal of Geophysical Research from the American Geophysical Union, geologists Uri ten Brink of the U.S. Geological Survey in Woods Hole and Jian Lin of the Woods Hole Oceanographic Institution (WHOI) report a heightened earthquake risk of the Septentrional fault zone, which cuts through the highly populated region of the Cibao valley in the Dominican Republic. Born in New Zealand, Simon received his B.S. There is no way these two earthquake sequences are connected. Perspective view of the seafloor of the Atlantic Ocean and the Caribbean Sea. He holds a master’s degree from the University of Rhode Island and a Ph.D. from Boston University. Earthquakes have been documented in the northeastern Caribbean since the arrival of Columbus to the Americas; written accounts of these felt earthquakes exist in various parts of the world. Fortunately, despite some infrastructural damage in spots around the region, and the initial tsunami warning, this turned out to be nothing close to a tragedy. Below are other science projects associated with this project. Seismic evidence for a slab tear at the Puerto Rico Trench; 2013; Article; Journal; Journal of Geophysical Research: Solid Earth; Meighan, Hallie E.; Pulliam, Jay; Brink, Uri ten; Lopez-Venegas, Alberto M. Reply to a comment by Carol S. Prentice, Paul Mann, and Luis R. Peña on: "Historical perspective on seismic hazard to Hispaniola and the northeast Caribbean region" by U. ten Brink et al. The Puerto Rico Trench, in contrast, is located at a boundary between two plates that slide past each other with only a small component of subduction. The most recent major earthquake, a magnitude 8.1 in 1946, resulted in a tsunami that killed a reported 1,600 people.

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