Collaborative Research: U.S. - ROC Deep Seismic Imaging Study of the Taiwan Arc-Continent Collision

合作研究：美国-中华民国台湾弧大陆碰撞深震成像研究

• 批准号: 9417415
• 负责人: Neil Lundberg
• 金额: $ 4.38万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-04-15 至 1999-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9417415&HistoricalAwards=false
• 关键词: Collaborative; Research; U.S.; ROC; Deep

9417415 Lundberg Studies of arc-continent collisions provide valuable insights into orogenic processes and continental accretion. The Taiwan orogenic belt provides a modern example of this process, which has served as an important model for studying ancient orogens now exposed on land. Uplift rates measured along the collision suture in southeastern Taiwan are among the fastest in the world, yet little is known about the crustal structure beneath this region or the mechanisms responsible for uplift at the critical transition from subduction to collision located in the offshore to the south of Taiwan. The present project will provide detailed new information with which to examine Taiwan crustal structure and the collision process. Data to be acquired include multi-channel seismic reflection and seismic refraction data from the offshore region, as well as simultaneous crustal refraction measurements on land. A major advantage to undertaking such a study in Taiwan is that progressively younger stages of the propagating collision can be viewed by moving southward along the collision zone. Thus, the detailed aspects of the collision process can be examined from an evolutionary perspective. Results from the project will be critical in planning drilling by the Ocean Drilling Program. This is a cooperative project supported by scientists at four U.S. institutions and the Institute of Oceanography of the National Taiwan University. ***

小行星9417415 弧-陆碰撞的研究为造山过程和大陆增生提供了有价值的见解。台湾造山带是这一过程的现代范例，也是研究现今暴露在陆地上的古老造山带的重要模式。台湾东南部沿着碰撞缝合线是世界上最快的碰撞带之一，但对这一地区的地壳结构以及台湾南部近海从俯冲到碰撞的关键过渡阶段的隆升机制却知之甚少。 本计画将提供详细的新资料，以研究台湾地壳结构与碰撞过程。将获得的数据包括来自近海地区的多道地震反射和地震折射数据，以及同时进行的陆地地壳折射测量。在台湾进行这样的研究的一个主要优点是，可以通过沿着碰撞区向南移动来观察逐渐年轻的碰撞传播阶段。因此，碰撞过程的细节方面可以从进化的角度来研究。该项目的结果将对大洋钻探计划的钻探计划至关重要。这是一个由美国四个机构的科学家和国立台湾大学海洋研究所支持的合作项目。 ***