Massive Relocation of Earthquakes Recorded at Regional and Teleseismic Distances Using a Double-Difference Algorithm, with Application to Subduction Zones

使用双差算法对区域和远震距离记录的地震进行大规模重新定位,并应用于俯冲带

基本信息

  • 批准号:
    0229832
  • 负责人:
  • 金额:
    $ 14.38万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2003
  • 资助国家:
    美国
  • 起止时间:
    2003-03-01 至 2005-02-28
  • 项目状态:
    已结题

项目摘要

EAR-0229832Felix WaldhauserHigh-resolution hypocenter locations are most crucial in estimating seismichazard, inferring Earth structure, studying tectonics, and to the fundamentalunderstanding of the occurrence and physics of earthquakes. Several recentstudies, of which this is a continuation, have demonstrated the substantialimprovement in earthquake locations by applying a recently developeddouble-difference (DD) earthquake relocation algorithm to thousands of shallowearthquakes recorded at local distances. This project focuses on adapting the DD method to relocate, on a massive scale (several tens of thousands of events) and over large distances (thousands of km), earthquakes recorded at regional andteleseismic distances. The investigators will test and evaluate the performance of the new tools using globally recorded events for which ground truth is known, andcompare the results with results derived from commonly used location techniques.They will also apply the DD method to the 'groomed' ISC bulletin to relocate large numbers of earthquakes in subduction zones with the aim to image the internalstructure of seismicity associated with descending slabs. The focus willinitially be on the Andean subduction zone with the aim to define in detail themorphology of the slab and its correlation with patterns of microseismicity andthe rupture areas of damaging earthquakes. they will also relocate other areaswith dense seismicity to search for characteristic seismicity patterns in timeand space which may provide new insights into the occurrence and physics ofWadati Benioff earthquakes.
EAR-0229832 Felix Waldhauser高分辨率震源位置对于估计地震危险性、推断地球结构、研究构造以及对地震发生和物理的基本理解是至关重要的。最近的几项研究表明,通过将最近开发的双差(DD)地震重新定位算法应用于数千个在局部距离记录的浅源地震,地震位置得到了实质性的改善。该项目的重点是调整DD方法,以便在大规模(数万次地震)和大范围(数千公里)范围内重新定位在区域和远程地震距离记录到的地震。调查人员将使用已知地面真实情况的全球记录事件来测试和评估新工具的性能,并将结果与常用定位技术得出的结果进行比较。他们还将将DD方法应用于“精心设计的”ISC公告,以重新定位俯冲带中的大量地震,目的是成像与下降板块相关的地震活动的内部结构。最初的重点将放在安第斯俯冲带上,目的是详细确定板块的形态及其与微震活动模式和破坏性地震的破裂区的关系。他们还将重新安置其他地震活动密集的地区,以寻找地震活动在时间和空间上的特征图像,这可能为瓦达蒂·贝尼奥夫地震的发生和物理提供新的见解。

项目成果

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Felix Waldhauser其他文献

Felix Waldhauser的其他文献

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{{ truncateString('Felix Waldhauser', 18)}}的其他基金

Collaborative Research: Frameworks: Seismic COmputational Platform for Empowering Discovery (SCOPED)
合作研究:框架:增强发现能力的地震计算平台(SCOPED)
  • 批准号:
    2103741
  • 财政年份:
    2021
  • 资助金额:
    $ 14.38万
  • 项目类别:
    Standard Grant
Collaborative Research: Caldera Dynamics and Eruption Cycles at Axial Seamount
合作研究:轴向海山的火山口动力学和喷发周期
  • 批准号:
    1951448
  • 财政年份:
    2020
  • 资助金额:
    $ 14.38万
  • 项目类别:
    Continuing Grant
NSFGEO-NERC: Collaborative Research: The central Apennines Earthquake cascade under a new microscope
NSFGEO-NERC:合作研究:新显微镜下的亚平宁中部地震级联
  • 批准号:
    1759782
  • 财政年份:
    2018
  • 资助金额:
    $ 14.38万
  • 项目类别:
    Continuing Grant
Comprehensive high-precision relocation of global seismicity
全球地震活动全面高精度重定位
  • 批准号:
    1547560
  • 财政年份:
    2016
  • 资助金额:
    $ 14.38万
  • 项目类别:
    Continuing Grant
Collaborative Research: Understanding the Spatio-Temporal Characteristics of Earthquakes at Axial Seamount Late in an Eruptive Cycle
合作研究:了解喷发周期后期轴状海山地震的时空特征
  • 批准号:
    1536320
  • 财政年份:
    2015
  • 资助金额:
    $ 14.38万
  • 项目类别:
    Standard Grant
Imaging the Fine Structure of Earthquakes and Faults with High-Precision Aftershocks
利用高精度余震对地震和断层的精细结构进行成像
  • 批准号:
    1520680
  • 财政年份:
    2015
  • 资助金额:
    $ 14.38万
  • 项目类别:
    Continuing Grant
Comprehensive high-precision relocation of global seismicity
全球地震活动全面高精度重定位
  • 批准号:
    1141986
  • 财政年份:
    2012
  • 资助金额:
    $ 14.38万
  • 项目类别:
    Continuing Grant
Collaborative Research: High-Precision Teleseismic Relocation and Tomography for the M 9 and M 8.7 Sumatra Great Earthquake Sequences
合作研究:苏门答腊岛9级和8.7级大地震的高精度远震重定位和层析成像
  • 批准号:
    0608739
  • 财政年份:
    2006
  • 资助金额:
    $ 14.38万
  • 项目类别:
    Standard Grant

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