权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

A 3-D Seismic Investigation of the Aseismic to Seismic Transition along the Eurasian-Phillippine Sea Plate Boundary: U.S.-Japan Cooperative Program

欧亚-菲律宾海板块边界沿线的无震到地震转变的 3-D 地震研究：美日合作计划

基本信息

批准号：
9802264
负责人：
J. Casey Moore
金额：
$ 15.7万
依托单位：
University of California-Santa Cruz
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1998
资助国家：
美国
起止时间：
1998-09-15 至 2004-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9802264&HistoricalAwards=false
关键词：
Seismic Investigation Aseismic Transition along

项目摘要

9802264 Moore this award will support a seismic reflection, refraction and passive seismicity program to study underthrusting of oceanic crust along the Nankai Trough off the east coast of Japan. The primary feature to be examined in this experiment is the subduction thrust fault from its aseismic zone in the Trough (trench) to a depth of at least 15 kilometers beneath the continental margin where the thrust is marked by significant seismic activity. The goal of the study is to examine changes in physical properties along the thrust as it changes from aseismic to seismic expression. Understanding this transition from compaction and aseismic slip to brittle failure is a major unknown in understanding lithospheric consumption and earthquake dynamics. This Nankai seismogenic zone marks the location of major destructive earthquakes along the Japanese margin. The project is a collaborative experiment. United State scientists will be responsible for acquiring and interpreting 3-dimensional seismic reflection data from the thrust fault and accreting margin. Japanese colleagues will be responsible for deploying ocean bottom seismometers for seismic refraction and passive seismicity studies. In addition t the basic scientific interpretation to be derived from the data, the experiment is critical to the development of the MARGINS initiative and will provide necessary site location data for future drilling by the international Ocean Drilling Program. ***

9802264摩尔该奖项将支持地震反射，折射和被动地震活动计划，以研究海洋地壳的俯冲沿着日本东海岸的南海海槽。在这个实验中要检查的主要特征是俯冲逆冲断层，从海槽（海沟）中的俯冲带到大陆边缘以下至少15公里的深度，那里的逆冲断层具有明显的地震活动。这项研究的目的是检查物理性质的变化，沿着逆冲断层，因为它的变化，从地震的表达。理解这种从压实和无滑移到脆性破坏的转变是理解岩石圈消耗和地震动力学的一个主要未知数。这个南海地震带标志着日本边缘沿着主要破坏性地震的位置。该项目是一项合作实验。美国科学家将负责获取和解释逆冲断层和增生边缘的三维地震反射数据。日本同事将负责部署海底地震仪，用于地震折射和被动地震活动研究。除了从数据中得出的基本科学解释外，该实验对MARGINS倡议的发展至关重要，并将为国际大洋钻探计划今后的钻探提供必要的现场位置数据。 ***