GPS Observations in Chile of Co-seismic and Post-seismic Deformation Associated with the 27 Feb, 2010 Mw 8.8 Maule, Chile Earthquake

为了快速响应2010年2月27日智利马乌莱8.8级地震，多个机构的调查人员将通过夏威夷大学协调安装20个连续的GPS站，通过使用滑动分布模型沿着破裂长度设置站，以广泛和最有效地测量活动区域。实地工作将由俄亥俄州州立大学的Mike Bevis领导，与智利大学和智利军事地理研究所的Sergio Barrientos协调。数据将被纳入有限源滑动反演和公开发布。原始的全球定位系统数据也将通过人工下载或通过卫星下行链路以接近实时的方式提供。该项目的智力价值是广泛的。PI引用了可以使用这一广泛阵列解决的构造问题，包括了解地震的同震位移场，这将有助于限制断层破裂和海啸模型，检查主震和辅助断层上应力加载的作用，观察余震和余震的时空分布，使用高速率GPS，了解俯冲带和周围地区对地震的流变和力学行为。更广泛的影响包括支持一个大型的国际合作，包括来自智利和法国机构的科学家，以及支持来自夏威夷大学，俄亥俄州，孟菲斯大学和加州理工学院的PI。该项目将对从该项目收集的全球定位系统数据以及法国获得的数据进行公开存档。所有数据一旦通过联刚特派团收集，将立即公开提供。所收集的数据将对广泛的领域有用，包括大地测量研究，结构工程和海洋学。该奖项由地球科学部（GEO/ESTA）的构造学和地球物理学计划以及美洲计划国际科学与工程办公室支持。

In rapid response to the Feb.27, 2010 M 8.8 Maule earthquake in Chile, investigators at multiple institutions, coordinated through the University of Hawaii will install 20 continuous GPS stations, siting stations along the rupture length by using slip distribution models to widely and most effectively instrument the active areas. Fieldwork will be lead by Mike Bevis, Ohio State University, coordinating with Sergio Barrientos at the University of Chile and the Instituto Geografico Militar de Chile. Data will be incorporated into finite-source slip inversions and publicly posted. The raw GPS data will also be made available either by manual download or in near real-time through satellite downlink. The intellectual merit of the project are wide ranging. The PIs cite tectonic problems that may be addressed using this broad array, including understanding the coseismic displacement field of the earthquake, which will help to constrain fault rupture and tsunami models, examining the role of stress loading on the mainshock and ancillary faults, observing afterslip and spatio-temporal distribution of aftershocks, using high-rate GPS and understanding the rheological and mechanical behavior of the subduction zone and surrounding region in response to the earthquake. The Broader Impacts include support for a large international collaboration including scientists from Chilean and French institutions, as well as support for PIs from the University of Hawaii, Ohio State, University of Memphis and Caltech. The project will produce an open archive of GPS data collected from this project as well as data acquired by the French. All data will be made openly available as soon as it is collected through UNAVCO. The data collected will be useful for a broad range of domains, including geodetic studies, structural engineering and oceanography.This award is supported by the Tectonics and Geophysics programs in the Division of Earth Sciences (GEO/EAR) and the Office of Interational Science and Engineering, Americas Program.