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.

这项研究是通过对 Pn 速度和地壳厚度横向变化的持续层析成像研究来研究岩石圈强度和构造。 目标包括 Pn 速度和地壳厚度的层析成像；模拟复杂的地壳和地幔结构对 Pn 走时时间的影响；并根据区域构造解释结果。 过去的工作已经绘制了中东、中亚和美国西部的 Pn 地图。 这项工作将把该地图扩展到欧洲和印度支那。 数据库由 ISC 出行时间数据和本项目中确定的出行时间组成。 最终，最上层地幔速度、地壳厚度和其他地球物理参数的定量知识将用于将地球表面看到的构造和地质与下面的地幔联系起来，以便深入了解塑造地球表面的过程。