U.S.-Japan Cooperative Research: Active Tectonics of the Philippine Sea Plate

该奖项支持哥伦比亚大学拉蒙特-多尔蒂地质观测站的约翰·比万和克里斯·肖尔茨以及东京大学地震研究所的加藤Teruyuki Kato正在进行的美日合作研究项目。该项目是一项为期五年的合作的一部分，旨在通过收集和分析全球定位系统（GPS）在日本东南部菲律宾海板块东部、西部和北部边界的战略位置上的测量结果，解决与菲律宾海板块及其边界的活动构造有关的几个主要问题。琉球、台湾、博宁群岛、马里亚纳群岛和密克罗尼西亚。在为期两年的资助期内，将处理以下具体主题：(1)确定准确的菲律宾-欧亚板块和菲律宾-太平洋两极和旋转速率；(2)海沟边界板块驱动力大小；(3)弧后扩散机理；(4)弧前走滑机理；(5)弧-陆碰撞机制；(6)日本东南部和台湾地区的形变和地震灾害分布。除主要研究人员外，参与该项目的其他人员包括纽约州立大学石溪分校的丹·戴维斯；伦斯勒理工学院Steven Roecker；京都大学平原一郎、田中一郎；以及东京大学的村田、加藤和中尾。这项资助是对美国国家科学基金会地球科学项目资助的补充。

This award supports an ongoing U.S.-Japan collaborative research project between John Beavan and Chris Scholz of Lamont-Doherty Geological Observatory, Columbia University, and Teruyuki Kato, Earthquake Research Institute, University of Tokyo. This project is part of a five-year collaboration to resolve several major problems related to the active tectonics of the Philippine Sea Plate and its boundaries through collection and analysis of Global Positioning System (GPS) measurements at sites strategically placed along the eastern, western, and northern boundaries of the Philippine Sea Plate in southeast Japan, the Ryukyus, Taiwan, and in the Bonins, Marianas, and Micronesia. During the two-year period of the grant, the following specific topics will be addressed: (1) determination of accurate Philippine - Eurasian Plate and Philippine Sea-Pacific poles and rotation rates; (2) the magnitude of plate driving forces at trench boundaries; (3) the mechanism of back-arc spreading; (4) the mechanism of strike-slip in the forearc; (5) the mechanics of arc-continent collision; and (6) the distribution of deformation and seismic hazard in southeast Japan and Taiwan. In addition to the principal investigators, others involved in the project are Dan Davis, SUNY Stony Brook; Steven Roecker, Rensselaer Polytechnic Institute; Kazuro Hirahara and T. Tanaka, Kyoto University; and I Murata, T. Kato, and S. Nakao, University of Tokyo. This grant complements a grant from the NSF Earth Sciences Program, which is funding the research in the United States.