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Collaborative Research: Complex Upper Mantle Structure Beneath Northeast US Investigated Through Shear Wave Tomography

Collaborative Research: Complex Upper Mantle Structure Beneath Northeast US Investigated Through Shear Wave Tomography
合作研究:通过剪切波断层扫描研究美国东北部下方复杂的上地幔结构
批准号:
9707189
负责人:
Jeffrey Park
金额:
$5.32万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1997
资助国家:
美国
项目状态:
已结题
起止时间:
1997-08-15 至 1999-07-31

项目摘要

项目成果

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中文摘要
翻译
这项研究是哥伦比亚大学和耶鲁大学的合作,涉及对美国东北部稳定克拉通环境中不同类型的地幔非均质性的研究。这个地质古老地区的强烈非均质性是出乎意料的,因为横向温度梯度——活动构造地区非均质性的主要原因——可能非常微弱。行时异常与剪切波分裂变化相关,因此至少部分非均质性可能是由于地幔结构方向的横向变化。这项研究将验证“各向异性域”的假设,即与过去构造活动相关的应变地幔岩石的相干体积,是走时非均质性的主要来源。这些数据将来自最近在美国东北部高密度的固定和便携式台站记录的地震图,以形成一个体波传播时间和横波分裂测量数据集。***
英文摘要
9707189 Park This research is a collaboration between Columbia University and Yale University involving the investigation of different types of mantle heterogeneity in the stable cratonic environment of the northeastern U.S. The strong heterogeneity in this geologically old region is unexpected since lateral temperature gradients - the main cause of heterogeneity in areas of active tectonics - are probably very subdued. Travel-time anomalies correlate with shear-wave splitting variations, so at least some of the heterogeneity is probably due to lateral changes in the orientation of mantle fabrics. This research will test the hypothesis that "anisotropic domains," coherent volumes of strained mantle rock related to past tectonic activity, are the primary source of traveltime heterogeneity. The data are to come from seismograms recorded by the recent high density of fixed and portable stations in the northeastern U.S. to form a dataset of body wave traveltimes and shear wave splitting measurements. ***
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会议论文
Love-Rayleigh Scattering and Regional Anisotropy in USArray
  • 批准号:
    0952281
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $20.98万
  • 财政年份:
    2010
  • 负责人:
    Jeffrey Park
  • 依托单位:
Travel Support for 2006 Workshop on Seismic Anisotropy and Geodynamics of the Lithosphere-Asthenosphere System; Czech Republic
  • 批准号:
    0632158
  • 项目类别:
    Standard Grant
  • 资助金额:
    $1.5万
  • 财政年份:
    2006
  • 负责人:
    Jeffrey Park
  • 依托单位:
Collaborative Research: H2O in the Mantle Wedge
  • 批准号:
    0208089
  • 项目类别:
    Standard Grant
  • 资助金额:
    $6.85万
  • 财政年份:
    2002
  • 负责人:
    Jeffrey Park
  • 依托单位:
Seismic Investigation of Lithospheric Strain: The Red Sea Rift
  • 批准号:
    0313988
  • 项目类别:
    Standard Grant
  • 资助金额:
    $7.87万
  • 财政年份:
    2002
  • 负责人:
    Jeffrey Park
  • 依托单位:
国内基金
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)