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Collaborative Research: A Magnetotelluric Study of the Lower Crust and Upper Mantle in California

Collaborative Research: A Magnetotelluric Study of the Lower Crust and Upper Mantle in California
合作研究:加利福尼亚州下地壳和上地幔的大地电磁研究
批准号:
8817149
负责人:
Theodore Madden
金额:
$0.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1989
资助国家:
美国
项目状态:
已结题
起止时间:
1989-01-01 至 1990-06-30

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中文摘要
翻译
这是一个在加利福尼亚进行大地电磁测量和三维解释的合作项目,将集中于确定下地壳和上地幔的电阻率。这些测量结果及其解释将有助于了解该地区下地壳中存在的条件,这些条件必须在正在进行的构造运动中发挥作用,并且目前是许多争论的主题。这些测量还应该能够探测到上地幔中可能与地幔变形过程有关的任何不寻常的热状况。从大地电磁测量中确定地壳电阻率的能力是由于一个幸运的情况,即海洋电导率-电阻率结构允许洋流系统被带到加利福尼亚的上地壳,因此,大地电磁测量可以跟踪这些电流通过下地壳返回地幔的方式。
英文摘要
This is a collaborative project for making magnetotelluric measurements and three dimensional interpretations in California that will concentrate on determining the lower crust and upper mantle resistivities. These measurements and their interpretation will be helpful in trying to understand the conditions that exist in the lower crust of this region which must play a role in the ongoing tectonics, and which are presently the subject of a good deal of debate. These measurements should also be able to detect any unusual thermal conditions in the upper mantle which could be related to mantle deformation processes. The ability to determine crustal resistivities from magnetotelluric measurements is due to the fortunate circumstance that the oceanic conductivity-resistivity structure allows the oceanic current system to be brought up onto the California upper crust, and therefore, magnetotelluric measurements can follow the way in which these currents work their way back into the mantle through the lower crust.
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会议论文
Collaborative Research: Fast, Conjugate Gradients-Based Algorithm for 3-D Magnetotelluric Inversion
Collaborative Research: Crustal Reworking During Orogeny: An Active System Himalayan Perspective
Advances for 3-D Magnetotelluric Modeling
Electrical Studies of the Loma Prieta Fault Zone
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海外基金
Research on Quantum Field Theory without a Lagrangian Description
  • 批准号:
    24ZR1403900
  • 项目类别:
    省市级项目
  • 资助金额:
    --
  • 批准年份:
    2024
  • 负责人:
    SATOSHI NAWATA
  • 依托单位:
Cell Research
Cell Research
Cell Research (细胞研究)