Collaborative Research: Rapid Response to the Mw 7.9 Earthquake of April 25, 2015 in Nepal

合作研究：对 2015 年 4 月 25 日尼泊尔 7.9 级地震的快速响应

• 批准号: 1546622
• 负责人: Abhijit Ghosh
• 金额: $ 1.59万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-06-15 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1546622&HistoricalAwards=false
• 关键词: Collaborative; Research; Rapid; Response; Mw

This project is a rapid action to deploy a temporary seismological network following the Mw 7.9 earthquake of April 25, 2015 in Nepal. Data collected during the project will be made openly available to the seismological community one month after the array is uninstalled. This data collection impacts the Himalayan region known for its great seismological hazard. Aftershock deployment in the area of the 2015 earthquake will enable seismologists to conduct research, which will increase our understanding of the behavior of the Main Himalayan Thrust, a major underground fault responsible of this and other historical destructive earthquakes in the Himalayan region. In this project 25 seismic stations will be deployed in the greater epicentral region of the April 25, 2015 earthquake, and in western Nepal where a long-standing gap has accumulated about 10 m of deficit of slip since it last ruptured in 1505. These data will be useful in particular to determine a well-constrained source model of the 2015 earthquake, define the geometry of the Main Himalayan thrust, and analyze the relationship between post-seismic deformation and aftershocks. This deployment will be closely coordinated with another rapid deployment by US universities with 20 additional seismic stations that will increase the size of the monitoring network.

该项目是在2015年4月25日尼泊尔发生7.9级地震后部署临时地震台网的快速行动。在该项目期间收集的数据将在阵列安装一个月后向地震学界公开提供。这一数据收集影响了以地震危险性大而闻名的喜马拉雅地区。在2015年地震地区部署余震将使地震学家能够进行研究，这将增加我们对喜马拉雅主冲断层行为的了解，这是一个主要的地下断层，负责喜马拉雅地区的这次和其他历史破坏性地震。在该项目中，将在2015年4月25日地震的大震中地区和尼泊尔西部部署25个地震站，自1505年最后一次破裂以来，长期存在的缺口已经积累了约10米的滑动赤字。这些数据将特别有助于确定2015年地震的约束良好的震源模型，定义喜马拉雅主冲断层的几何形状，并分析震后变形与余震之间的关系。这一部署将与美国大学的另一个快速部署密切协调，增加20个地震站，增加监测网络的规模。