RAPID: Deep seismic investigation of Sumatran subduction zone seismic gap

该奖项是根据2009年美国复苏和再投资法案（公法111 - 5）资助的。 这是一个RAPID项目，派遣一名早期职业女性研究人员参加对苏门答腊俯冲带明打威段中心部分的独特，最先进的三维地震研究，以收集和解释苏门答腊俯冲板块的详细地球物理数据，深度达数十公里。 将调查三个样带，每个样带长约350 - 400 km。 为期21天的调查将在一艘具有出色采集能力的工业船舶上进行，包括有史以来使用的最长超长拖缆（15公里），并将对Summers边缘的结构提供新的限制，包括从海沟最浅处到锁定区下倾极限的巨型逆冲断层平面的成像。 这些数据还将用于对该地区其他活跃的、可能容易发生海啸的断层进行成像。 由此产生的数据将被用来检查破裂面的过去和未来的地震和其他深接口使用一种新的技术，利用波场记录在大的源-接收器的距离。 目标是将明打威群岛的构造垂直运动研究与构造信息联系起来， 了解俯冲带过程。 这项工作的更广泛的影响包括阐明沿海城市人口稠密的苏门答腊地区的地震和地震引发的海啸危险。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This is a RAPID project that sends an early career female researcher to participate in a unique, state-of-the-art, 3D seismic study of the central portion of the Mentawai segment of the Sumatran subduction zone to collect and interpret detailed geophysical data of the Sumatran subducting slab down to a depth of several tens of kilometers. Three transects each ~350-400km in length will be surveyed. The 21 day survey will be carried out on an industry vessel with outstanding acquisition capabilities, including an ultra-long streamer (15km), the longest ever used, and will provide new constraints on the structure of the Sumatran margin, including imaging of the megathrust fault plane from its shallowest expression at the trench to the downdip limit of the locked zone. Data will also be used to image other active and possibly tsunami prone faults in the area. Resulting data will be used to examine the rupture surface of past and future earthquakes and other deep interfaces using a novel technique exploiting the wavefield recorded at large source-receiver distances. Goals are to link structural information with studies of tectonic vertical movements on the Mentawai Islands to yield a breakthrough in our understanding of subduction zone processes. Broader impacts of the work include elucidation of earthquake and seismogenically-gernearted tsunami hazards in the Sumatran area which has highly populated coastal cities.