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Scattering in Earth's Lower Mantle and Implications for Mantle Flow Models

Scattering in Earth's Lower Mantle and Implications for Mantle Flow Models
地球下地幔中的散射及其对地幔流模型的影响
批准号:
9814614
负责人:
Robert van der Hilst
金额:
$0.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-06-01 至 2001-05-31

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中文摘要
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英文摘要
9814614van der HilstThis research involves the systematic mapping of scatterers in the deep mantle, in particular in the bottom 1000 km of the mantle where recent high-resolution tomography revealed unexpected changes in the planform of mantle heterogeneity. The objectives of this research are threefold. First, imaging techniques will be integrated to develop a powerful migration method for studies of lower mantle heterogeneity. Second, additional evidence will be sought for constraints on the postulated change in bulk chemistry in the lower mantle. Preliminary inversions to 1300-km depth suggest limited structures in the upper lower-mantle. This work will continue this work into the bottom third of the mantle. Third, by means of a combination of scattering and transmission tomography, improved understanding will be sought of the structure and dynamics of the base of the mantle. The integration of the techniques of body-wave scattering with those of transmission tomography will better determine that gradients and amplitudes of wave speed variations and thus produce a new class of Earth models that place tighter constraints on the chemical and thermal history of our planet.
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4D Imaging of Oceanic Transform Fault Material Properties Variations During the Earthquake Cycle
  • 批准号:
    1232725
  • 项目类别:
    Standard Grant
  • 资助金额:
    $25.0万
  • 财政年份:
    2012
  • 负责人:
    Robert van der Hilst
  • 依托单位:
Collaborative Research: Multiscale Travel Time Tomography of the Mantle to 1000 km Depth Beneath the Western USA
  • 批准号:
    0951901
  • 项目类别:
    Standard Grant
  • 资助金额:
    $7.82万
  • 财政年份:
    2010
  • 负责人:
    Robert van der Hilst
  • 依托单位:
CMG COLLABORATIVE RESEARCH: Nonlinear elastic-wave inverse scattering and tomography- from cracks to mantle convection
  • 批准号:
    1025302
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $46.17万
  • 财政年份:
    2010
  • 负责人:
    Robert van der Hilst
  • 依托单位:
Structure and Deformation of the Crust and Upper Mantle Beneath SE Tibet
  • 批准号:
    0910618
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.0万
  • 财政年份:
    2009
  • 负责人:
    Robert van der Hilst
  • 依托单位:
国内基金
海外基金
基于Google Earth Engine云平台的遥感图像去云研究
  • 批准号:
  • 项目类别:
    省市级项目
  • 资助金额:
    10.0万元
  • 批准年份:
    2021
  • 负责人:
    徐萌
  • 依托单位:
SCIENCE CHINA: Earth Sciences
SCIENCE CHINA Earth Sciences(中国科学:地球科学)