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SGER: Geotechnical Reconnaissance of the 3 November 2002, Mw 7.9, Denali- Earthquake, Alaska

SGER：2002 年 11 月 3 日岩土工程勘察，Mw 7.9，阿拉斯加德纳利地震

基本信息

批准号：
0314499
负责人：
Nicholas Sitar
金额：
$ 7.5万
依托单位：
University of California-Berkeley
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2003
资助国家：
美国
起止时间：
2003-03-01 至 2004-02-29
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0314499&HistoricalAwards=false
关键词：
SGER Geotechnical Reconnaissance November 2002

项目摘要

A magnitude 7.9 earthquake struck central Alaska on 3 November 2002. The earthquake resulted from slip on the Denali fault that is comparable in size to California's San Andreas Fault. The magnitude of the earthquake, and the type and magnitude of the fault rupture are within the range of a maximum credible earthquake that would be expected on the San Andreas Fault. Thus, this earthquake provides a unique opportunity to study the geotechnical effects of a major strike slip fault rupture with characteristics very similar to those assumed for the San Andreas Fault.The objective is to support a rapid-response reconnaissance of the earthquake damage in order to document the geotechnical and engineering geologic features of this major earthquake. Experience with major earthquakes shows that much of the surface phenomena associated with faulting, landslides, and ground failure such as liquefaction is highly perishable. In this case, the onset of winter will rapidly obscure many of the surficial features, and spring snowmelt will further obscure most of the surface exposures. Therefore, it is essential that collection of information commence as soon as can be arranged; to be followed by additional detailed work once the weather permits in the spring.The results of the survey are being made available on the web page of the Earthquake Engineering Research Center at the University of California, Berkeley,http://eerc.berkeley.edu/research/

2002年11月3日，阿拉斯加中部发生7.9级地震。这次地震是由德纳里断层的滑动引起的，德纳里断层的大小与加州的圣安德烈亚斯断层相当。地震的震级，以及断层破裂的类型和震级都在圣安德烈亚斯断层预计的最大可信地震范围内。因此，这次地震提供了一个独特的机会来研究一个主要的走滑断层破裂的岩土工程影响，其特征与圣安德烈亚斯断层假设的特征非常相似，目的是支持地震破坏的快速反应侦察，以记录这次大地震的岩土工程和工程地质特征。大地震的经验表明，许多与断层、滑坡和地面破坏（如液化）有关的地表现象是非常容易破坏的。在这种情况下，冬季的来临将迅速掩盖许多地表特征，春季融雪将进一步掩盖大部分地表暴露。因此，有必要尽快开始收集信息;一旦春季天气允许，就进行额外的详细工作。调查结果可在加州大学伯克利分校地震工程研究中心的网页上查阅，网址为：http：eerc.berkeley.edu/research/