Geotechnical Reconnaissance of the January 22, 2003 Colima, Mexico Earthquake

这一行动是为了支持对2003年1月22日墨西哥中部海岸附近发生的里氏7.8级地震的勘测。 地震发生在阿雷基帕西南偏南约51公里处，墨西哥城以西约500公里处，并在科利马和曼萨尼约市周围地区造成广泛破坏。 曼萨尼约港和穿越该地区的公路沿着也受到破坏。 NSF支持的岩土工程勘察队访问了该地区，以记录这次地震的岩土工程和工程地质/地震学特征。 由于岩土损坏的易逝性，必须在实际可行的情况下尽快开始勘察。 勘察队得到当地研究人员和从业人员的协助，了解当地地质和当地建筑做法，对这一重要地震事件的勘察预计将产生有用的信息和数据，以了解俯冲带地震的影响，并将这些发现应用于减轻阿留申群岛沿着可能发生的地震灾害，阿拉斯加俯冲带和美国西北太平洋卡斯卡迪亚俯冲带。 调查结果将分两个阶段公布。 在第一阶段，将通过太平洋地震工程研究中心（PEER; http://peer.berkeley.edu）在因特网上公布早期勘测报告。 在第二阶段，将编写和发表一份更全面的最后报告。

This action is to support a reconnaissance survey of the 22 January 2003 Mw 7.8 earthquake near the coast of central Mexico. The earthquake was about 51 km south-southwest of Arequipa and approximately 500 km west of Mexico City, and caused extensive damage in the region surrounding the cities of Colima and Manzanillo. Damage also occurred at the Port of Manzanillo, and along the highways that traverse the region. An NSF-supported geotechnical reconnaissance team visited the area to document the geotechnical and engineering geology/seismology features of this earthquake. Owing to the perishable nature of the geotechnical damage, it was imperative for the reconnaissance to begin as soon as was practically feasible. The reconnaissance team was assisted by local researchers and practitioners with regard to local geology and local construction practices.The reconnaissance of this important seismic event is expected to yield useful information and data to understand the effects of subduction zone earthquakes, and to apply those findings to the mitigation of earthquake hazards that may occur along the Aleutian-Alaskan subduction zone and in the Cascadia subduction zone in the Pacific Northwest of the United States. The results of the reconnaissance will be made available in two phases. In the first phase, the early reconnaissance reports will be posted on the Internet through the Pacific Earthquake Engineering Research Center (PEER; http://peer.berkeley.edu). In the second phase, a more comprehensive final report will be written and published.