Pn Tomography and its Implication for Lithospheric Strength

Pn 断层扫描及其对岩石圈强度的影响

• 批准号: 9219881
• 负责人: Thomas Hearn
• 金额: $ 8.72万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-05-01 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219881&HistoricalAwards=false
• 关键词: Pn; Tomography; its; Implication; Lithospheric

This research is a study of lithospheric strength and tectonics by continued tomographic studies of lateral variations in Pn velocity and crustal thickness. The goals include tomographic mapping of Pn velocity and crustal thickness; modelling the effects of complex crust and mantle structure on Pn travel times; and interpreting the results in light of regional tectonics. Past work has mapped Pn in the Middle East, Central Asia, and the western United States. This work will extend that mapping into Europe and into Indochina. The data bases consist of ISC travel time data and travel times that are determined in this project. Ultimately, the quantitative knowledge of uppermost mantle velocity, crustal thickness, and other geophysical parameters will be used to link the tectonics and geology seen at the surface of the earth to the mantle beneath in order to gain insight into the processes that shape the earth's surface.

这项研究是对岩石圈强度和构造的研究 通过对Pn横向变化的连续层析成像研究， 速度和地壳厚度。 目标包括断层扫描 Pn速度和地壳厚度的映射;模拟影响 复杂的壳幔结构对Pn走时的影响; 根据区域构造解释结果。 过去的工作 绘制了中东、中亚和西部的Pn图， 美国的 这项工作将把地图绘制扩展到欧洲， 进入印度支那 数据库由ISC旅行时间数据和 在这个项目中确定的旅行时间。 最终 上地幔速度的定量知识，地壳 厚度和其他地球物理参数将被用来联系 地球表面的构造和地质 为了深入了解 塑造地球表面