US-France Cooperative Research: The Midway-Hawaii Seismic Experiment

美法合作研究：中途岛-夏威夷地震实验

• 批准号: 8815126
• 负责人: Emile Okal
• 金额: $ 0.92万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-02-01 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8815126&HistoricalAwards=false
• 关键词: US; France; Cooperative; Research; Midway

This award will support collaborative research betwen Dr. Emile Okal, Department of Geological Sciences, Northwestern University and Professor Michael Cara, Institut de Physique du Globe, University of Louis Pasteur, Strasbourg, France. The research project will involve the joint operation of a three-component broad-band seismic station at Midway Island (Pacific Ocean) Both investigators have been engaged for several years in surface-wave studies on a world-wide basis, and locally in the Pacific Ocean. The common goal in this research has been the resolution of the crustal and upper mantle structure under the Pacific Basin, in particular, its lateral heterogeneity and anisotropy. In this general framework, Drs. Cara and Okal have started an active cooperation in surface-wave investigations in the Pacific Basin. In this project they will jointly operate a "portable" high quality broad-band seismic station in Midway Island. The data to be gathered will be of importance for our understanding of the mechanical and thermal evolution of the lithosphere near hot spots, as well as for the dynamics of the mantle plumes. A major difficulty in constraining models of thermal rejuvenation of the lithosphere is the lack of observational constraints, other than ocean bathymetry and heat flow. The results of this research will address this problem.

该奖项将支持西北大学地质科学系Emile Okal博士和法国斯特拉斯堡路易斯巴斯德大学全球体质研究所Michael Cara教授之间的合作研究。研究项目将涉及在中途岛（太平洋）联合操作一个三分量宽带地震台站。两位调查人员多年来一直从事世界范围和太平洋地区的表面波研究。本研究的共同目标是解析太平洋盆地下的地壳和上地幔结构，特别是其横向非均质性和各向异性。在这个总体框架下，dr。卡拉和奥卡尔已经开始在太平洋盆地的表面波调查方面积极合作。在这个项目中，他们将在中途岛共同操作一个“便携式”高质量宽带地震台站。收集的数据对于我们了解热点附近岩石圈的力学和热演化以及地幔柱的动力学非常重要。约束岩石圈热恢复模型的一个主要困难是除了海洋测深和热流之外缺乏观测约束。这项研究的结果将解决这个问题。