Collaborative Research: Mapping the Rivera Subduction Zone

合作研究:绘制里维拉俯冲带地图

基本信息

  • 批准号:
    0335782
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2004
  • 资助国家:
    美国
  • 起止时间:
    2004-09-15 至 2009-08-31
  • 项目状态:
    已结题

项目摘要

The investigators plan to deploy fifty broadband seismic instruments throughout the Jalisco and Colima provinces in Mexico. This region of Mexico is being underthrust by the Rivera microplate and has witnessed the largest earthquake in Mexican history. The subduction of the Rivera plate has also resulted in the overriding plate, the Jalisco block, separating from the rest of Mexico along two perpendicular grabens. The Jalisco block is also volcanically active with the Colima volcano unusually close to the trench. This region is a type example of the processes that can occur when a ridge meets a subduction zone. The tectonics of the region has been postulated to be due to the interaction of the Rivera plate and the overriding Jalisco block but little geophysical data exist to truly understand the subsurface interactions. In this project researchers will image the geometry of the Rivera plate at depth including a search for tears with the adjacent Cocos plate or evidence of breaking up of the Rivera plate at depth, both of which have been postulated. In this work tomographic imaging tools as well as receiver function analysis will be employed. Careful mapping of the slab surface as well as the locations and mechanisms of earthquakes in the region will provide constraints on the region of coupling between the Jalisco and Rivera plates. This will provide useful information for the ongoing GPS projects funded by NSF in this region that will ultimately help with hazard analysis. The investigators will also attempt to image the mantle wedge to better understand the volcanism in the region. Using shear wave splitting we hope to understand mantle flow beneath the Jalisco block. This study should have broader impact in understanding the evolution of plate boundaries when ridges interact with subduction zones. This has occurred in the geologically recent past off the coast of California and northern Mexico. This research includes a substantial international collaboration with Mexican colleagues from several institutions.This project is co-sponsored by the Americas Program in the Office Of International Science And Engineering.--
调查人员计划在墨西哥的哈利斯科和科利马省部署50台宽带地震仪器。墨西哥的这一地区正受到里维拉微板块的俯冲,并见证了墨西哥历史上最大的地震。里维拉板块的俯冲也导致了覆盖的板块哈利斯科地块沿着两个垂直的地堑与墨西哥的其余部分分开。哈利斯科地块的火山活动也很活跃,科利马火山异常接近海沟。该区域是海脊与俯冲带相遇时可能发生的过程的典型例子。该地区的构造一直被认为是由于里维拉板块和上覆的哈利斯科地块的相互作用所致,但真正了解地下相互作用的地球物理数据很少。在这个项目中,研究人员将在深处对里维拉板块的几何形状进行成像,包括寻找与相邻的科科斯板块一起撕裂的痕迹,或者在深处寻找里维拉板块解体的证据,这两者都是假设的。在这项工作中,将使用层析成像工具以及接收函数分析。仔细绘制板块表面的地图以及该地区地震的位置和机制,将对哈利斯科板块和里维拉板块之间的耦合区域提供限制。这将为NSF在该地区正在进行的GPS项目提供有用的信息,这些项目最终将有助于危险分析。调查人员还将尝试拍摄地幔楔体的图像,以更好地了解该地区的火山活动。利用横波分裂,我们希望了解哈利斯科地块之下的地幔流动。这项研究应该对理解海脊与俯冲带相互作用时板块边界的演化产生更广泛的影响。这发生在加利福尼亚州海岸和墨西哥北部近海的地质上。这项研究包括与来自几个机构的墨西哥同事的大量国际合作。这个项目是由国际科学和工程办公室的美洲计划共同发起的。

项目成果

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Stephen Grand其他文献

On Modeling Emergence
  • DOI:
    10.1007/s13752-013-0111-5
  • 发表时间:
    2013-04-12
  • 期刊:
  • 影响因子:
    1.900
  • 作者:
    Oren Harman;Stephen Grand
  • 通讯作者:
    Stephen Grand
Creatures: Entertainment Software Agents with Artificial Life

Stephen Grand的其他文献

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{{ truncateString('Stephen Grand', 18)}}的其他基金

Collaborative Research: Full waveform inversion for P and S seismic structure beneath Tibet
合作研究:青藏高原以下P、S地震构造全波形反演
  • 批准号:
    1838444
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
CSEDI Collaborative Research: Joint seismic-geodynamic constraints on deep Earth structure - Implications for mantle convection and Earth rotation
CSEDI合作研究:地球深层结构的联合地震-地球动力学约束——对地幔对流和地球自转的影响
  • 批准号:
    1902400
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: Improving lower mantle seismic sampling and model resolution using multi-bounce and diffracted waves
合作研究:利用多次反射波和衍射波提高下地幔地震采样和模型分辨率
  • 批准号:
    1648770
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: Seismic Investigation of Slab Structure and Back Arc Volcanism in the Sea of Japan Region
合作研究:日本海地区板状构造和弧后火山活动的地震调查
  • 批准号:
    1547494
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: NorthEast China Extended seiSmic Array (NECESS Array): Deep Subduction, Mantle Dynamics, and Lithospheric Evolution Beneath Northeast China
合作研究:中国东北扩展地震台阵(NECESS Array):中国东北地区深俯冲、地幔动力学和岩石圈演化
  • 批准号:
    0635855
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: Africa Array - Imaging the Africa Super Plume
合作研究:非洲阵列 - 非洲超级羽流成像
  • 批准号:
    0440222
  • 财政年份:
    2005
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Mantle Structure from Joint Inversions of Seismic and Geodynamic Data
地震和地球动力学数据联合反演的地幔结构
  • 批准号:
    0309189
  • 财政年份:
    2003
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
CSEDI Collaborative Res.: Composition and Seismic Structure of the Mantle Transition Zone
CSEDI协作研究:地幔过渡带的组成和地震结构
  • 批准号:
    0112256
  • 财政年份:
    2001
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: The African Mantle, A Case Study of Seismic Structure, Composition and Dynamics
合作研究:非洲地幔,地震结构、成分和动力学的案例研究
  • 批准号:
    0073643
  • 财政年份:
    2000
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: Colorado Plateau/Rio Grande Rift/ Great Plains Seismic Transect
合作研究:科罗拉多高原/里奥格兰德裂谷/大平原地震断面
  • 批准号:
    9707188
  • 财政年份:
    1999
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant

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