U.S.-Chile: Large Earthquakes and the Earthquake Cycle along the Chilean Subduction Zone

这项美国-智利奖将支持亚利桑那大学的Susan L. Beck博士和智利大学的Sergio E. Barrientos博士之间的研究合作。研究人员将分析1920年至1963年智利俯冲带发生的历史地震记录。他们将使用现代波形方法来确定震源参数，并将评估沿智利海岸逆冲和正常断层地震的地震周期。这项研究将包括对早期历史地震的详细分析。纳斯卡南美板块边界的智利俯冲带段在大地震中多次失败。为了更好地评估未来沿该板块边界发生地震的危险性，需要更多关于以往地震的信息。由于这种类型的构造在美国及其领土上也有相似之处，因此拟议的研究可能会增加对美国地震危险性的了解。＊＊＊

9314430 Beck This U.S.-Chile award will support a research collaboration between Dr. Susan L. Beck of the University of Arizona and Dr. Sergio E. Barrientos of the University of Chile. The researchers will analyze historic earthquake seismograms from events between 1920 and 1963 along the Chilean subduction zone. They will use modern waveform methods to determine earthquake source parameters and will evaluate seismic cycles of the underthrusting and normal fault earthquakes along the coast of Chile. The study will include detailed analyses of earlier historic earthquakes. The Chilean subduction zone segment of the Nazca South American plate boundary has failed repeatedly in large earthquakes. To better assess future earthquake hazards along this plate boundary, more information about previous earthquakes is needed. Since this type of tectonics has parallels in areas of the U.S. and its territories, the proposed study may lead to increased understanding of U.S. earthquakes hazard. ***