Puerto Plata, Dominican Republic Aftershock Study - RAMP

On September 22, 2003 a M 6.5 earthquake occurred in northern Dominican Republic. This earthquake was first located by the USGS at Lat. 19.7 N and Long. 69.7 W at a depth of 10 km. This location was 15 km south of Puerto Plata, a major city dedicated to tourism and 20 km north of Santiago, the second largest city in the Dominican Republic. Between 1943 and 1953, 5 earthquakes of magnitude 7.1 to 8.1 occurred to the west of the epicenter and have been associated with the south dipping interface of the North American plate under the Caribbean (Dolan and Wald, 1998). Previous to that, other significant earthquakes occurred in the region: 1564 (the city of Santiago was destroyed), 1783, 1842, 1887, 1897 (Mann et al, 1998). These earthquakes have been associated with the Septentrional Fault system. Recent paleoseismological studies by Paul Mann and others (1998) revealed the high seismic hazard associated with the Septentrional Fault.
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2003年9月22日，多米尼加共和国北部发生6.5级地震。美国地质调查局（USGS）最初将该地震定位为北纬19.7°、西经69.7°，震源深度10千米。该震中位于旅游重镇普拉塔港以南15千米处，同时地处多米尼加第二大城市圣地亚哥以北20千米。
1943年至1953年间，震中以西区域发生5次震级7.1至8.1的地震，这些地震被认为与北美板块向加勒比板块下方俯冲的南倾界面相关（Dolan与Wald，1998）。
在此之前，该区域已发生多起显著地震：1564年（圣地亚哥城被完全摧毁）、1783年、1842年、1887年、1897年（Mann等，1998），上述地震均与北延断层系（Septentrional Fault System）相关。
保罗·曼（Paul Mann）等人1998年开展的最新古地震学研究揭示了北延断层系伴随的极高地震危险性。
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