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A Seismic Study of Subducted Lithosphere

A Seismic Study of Subducted Lithosphere
俯冲岩石圈的地震研究
批准号:
9018321
负责人:
Wang-Ping Chen
金额:
$11.62万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-02-15 至 1993-10-31

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中文摘要
翻译
本研究是利用现代波形反演技术,确定过去25年来发生在千岛-堪察加俯冲带深度超过200公里的所有大到中等地震的震源参数和传播时间。所得数据将用于反演上地幔的三维构造和研究俯冲板块的应力方向。目标是解决板块是否在670公里边界处停止或进入下地幔的问题,这是一个影响地球动力学模型和地幔化学分层的重要问题。
英文摘要
This research is to use modern techniques of waveform inversion to determine both source parameters and travel times for all large to moderate-sized earthquakes that occurred deeper than 200 km in the Kuril-Kamchatka subduction zone in the past 25 years. The resultant data will be used to invert for 3-D structure in the upper mantle and to investigate the stress directions in the subducting slab. The goal is to address the question of whether the slab stops at the 670 km boundary or passes through into the lower mantle, a significant question affecting models of earth dynamics and the chemical layering of the mantle.
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Collaborative Research: Imaging the Continental Lithosphere with Earthquake Sources
Collaborative Research: A Study of Deep Subduction Integrating Broadband Seismology and Mineral Physics
Collaborative Research: Lithospheric-Scale Dynamics of Active Mountain Building Along the Himalayan-Tibetan Collision Zone
A Seismic Study of the Taiwan Orogen
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