Pn Tomography of the Middle East to Central Asia: Implications for the Evolution of Continental Plateaus

中东至中亚的 Pn 层析成像：对大陆高原演化的启示

• 批准号: 9105575
• 负责人: Thomas Hearn
• 金额: $ 3.87万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-01 至 1992-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9105575&HistoricalAwards=false
• 关键词: Pn; Tomography; Middle; East; Central

This research is to determine the lateral variation in the uppermost mantle P-wave velocity and to determine the crustal thickness in the Middle East and Central Asia. This region has been affected by continental collision between the Arabian and Eurasian plates and between the Indian and Eurasian plates. The method is a tomographic inversion of the large data base of regional seismic travel times from the Worldwide Standardized Seismographic Network and other Asian stations. The derived uppermost mantle velocities and crustal thicknesses will be used to constrain models for the evolution of continental plateaus behind collisional mountain belts, and factors controlling earthquake distribution. This research is a component of the National Earthquake Hazard Reduction Program.

这项研究的目的是确定最上地幔纵波速度的横向变化，并确定中东和中亚的地壳厚度。 该地区受到阿拉伯板块和欧亚板块之间以及印度板块和欧亚板块之间的大陆碰撞的影响。 该方法是对来自全球标准化地震台网和其他亚洲台站的区域地震走时大数据库进行层析反演。 得出的最上地幔速度和地壳厚度将用于约束碰撞山带后面大陆高原的演化模型以及控制地震分布的因素。 这项研究是国家地震减灾计划的一部分。