Three-Dimensional High Resolution Upper Mantle Shear Wave Velocity Structure

三维高分辨率上地幔剪切波速度结构

• 批准号: 9219607
• 负责人: Yu-Shen Zhang
• 金额: $ 6.72万
• 依托单位: University of California-Santa Cruz
• 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: 1993-03-01 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219607&HistoricalAwards=false
• 关键词: Three; Dimensional; Resolution; Upper; Mantle

This research will develop a new global three-dimensional S- wave velocity model for the upper mantle with lateral resolution of on the order of 1000 km or less. The new aspect of this project is that it will depart fundamentally from the approach of using little or no a priori information which underlies all recent seismological tomographic studies. To better account for the overwhelming influence of shallow lithospheric velocity heterogeneity, a regionalized initial model, including topographic, crustal and lithosphere variations will be used in some of the inversion. The inversions will include simultaneous determination of source locations and structure using Love and Rayleigh wave spectral data. This project will promote multi-disciplinary advances in the study of plate tectonics, mantle dynamics and the geoid, and petrology and geochemistry of the lithosphere.

本研究将开发一种新的全球三维S- 具有横向分辨率的上地幔波速模型 的数量级为1000公里或更少。该项目的新方面 它将从根本上背离 很少或没有先验信息，这是所有最近的 地震层析成像研究 为了更好地解释 浅层岩石圈速度的压倒性影响 异质性，一个区域化的初始模型，包括地形， 地壳和岩石圈的变化将被用于一些 反演 倒置将包括同时测定 震源位置和结构的研究 光谱数据 该项目将促进多学科 板块构造、地幔动力学和地球化学研究进展 大地水准面、岩石圈岩石学和地球化学。