Constraints on Slow Slip Behavior in Cascadia Through the Integration of PBO Borehole Strainmeters, GPS Time Series, and Tremor Locations

通过集成 PBO 钻孔应变仪、GPS 时间序列和震颤位置来约束卡斯卡迪亚的慢滑移行为

基本信息

  • 批准号:
    1251954
  • 负责人:
  • 金额:
    $ 27.97万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2013
  • 资助国家:
    美国
  • 起止时间:
    2013-09-01 至 2017-08-31
  • 项目状态:
    已结题

项目摘要

Slow slip events and non-volcanic tremor provide new insight into the mode of strain release along the deep extension of faults. These events are noteworthy for their long durations (~days) and large magnitudes (~M6). We have yet to fully understand what properties or conditions on the plate interface act to prevent the rapid slip that is typically observed with earthquakes. Slow slip and tremor also constrain the lower edge of the seismogenic zone, a variable that is useful for seismic hazard studies, and event histories are an input into studies that explore the time-dependent loading of stress on the seismogenic zone. Most of the existing geodetic studies of slow slip have focused on observations made by GPS. In this work, we integrate borehole strainmeters with GPS data to more fully characterize the spectrum of slow slip behavior on the Cascadia subduction zone. Time-dependent inversions of GPS and strainmeter time series are performed using the Extended Network Inversion Filter. By incorporating the strainmeters into our analysis, we resolve smaller slow slip events and extract greater information about the propagation characteristics than by using GPS alone. From our expanded catalog of slow slip events, we are extracting the source parameters and testing whether the smaller slow slip events (~M5+) obey the same scaling relationships as has been inferred for the larger ones (~M6+). The strainmeter data also allow us to better compare the spatial and temporal correlation of slow slip and the location of tremor. We are testing the idea of whether tremor marks the leading edge of slow slip or whether tremor is embedded within the slipping zone. Lastly, we are evaluating the up-dip taper of slow slip and seeing if the surface observations are consistent with an abrupt up-dip edge, as suggested by the tremor. Our analysis of the strainmeter data allows us to better evaluate the calibration and noise characteristic of the strainmeter time series. We will specifically use the GPS-derived slip models to independently validate the strainmeter calibrations.
慢滑事件和非火山震颤为断层深部伸展的应变释放模式提供了新的认识。这些事件值得注意的是它们持续时间长(~天)和震级大(~M6)。我们还没有完全了解在板块界面上是什么特性或条件阻止了通常在地震中观察到的快速滑动。慢滑和震颤还限制了孕震带的下边缘,这是一个对地震危险性研究有用的变量,而事件历史是探索孕震带应力随时间加载的研究的输入。大多数现有的慢滑动大地测量学研究都集中在GPS观测上。在这项工作中,我们将钻孔应变仪与GPS数据相结合,以更全面地表征卡斯卡迪亚俯冲带慢滑行为的频谱。利用扩展网络反演滤波器对GPS和应变仪时间序列进行时变反演。通过将应变仪纳入我们的分析,我们解决了较小的慢滑事件,并提取了比单独使用GPS更多的传播特性信息。从我们扩展的慢滑事件目录中,我们提取了源参数,并测试了较小的慢滑事件(~M5+)是否遵循与推断的较大的慢滑事件(~M6+)相同的标度关系。应变计数据也使我们能够更好地比较慢滑的时空相关性和震颤的位置。我们正在测试震颤是否标志着缓慢滑动的前缘,或者震颤是否嵌入滑动区。最后,我们正在评估慢滑的上倾锥度,看看地面观测是否与地震所表明的突然上倾边缘一致。我们对应变仪数据的分析使我们能够更好地评估应变仪时间序列的校准和噪声特性。我们将特别使用gps衍生的滑动模型来独立验证应变计校准。

项目成果

期刊论文数量(0)
专著数量(0)
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会议论文数量(0)
专利数量(0)

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David Schmidt其他文献

Playing safe in coordination games: : the roles of risk dominance, payoff dominance, and history of play
在协调博弈中安全行事::风险支配、收益支配和博弈历史的作用
  • DOI:
    10.1016/s0899-8256(02)00552-3
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    0
  • 作者:
    David Schmidt;Robert Shupp;James M. Walker;E. Ostrom
  • 通讯作者:
    E. Ostrom
Entrepreneurship and Creative Destruction
创业与创造性破坏
  • DOI:
    10.21272/bel.4(2).102-108.2020
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Cathleen Johnson;R. Lusch;David Schmidt
  • 通讯作者:
    David Schmidt
Gene ontology analysis of the centrosome proteomes of Drosophila and human
果蝇和人类中心体蛋白质组的基因本体分析
  • DOI:
    10.4161/cib.4.3.14806
  • 发表时间:
    2011
  • 期刊:
  • 影响因子:
    0
  • 作者:
    H. Müller;David Schmidt;Felix Dreher;R. Herwig;A. Ploubidou;B. Lange
  • 通讯作者:
    B. Lange
Economics at the FTC: Fraud, Mergers and Exclusion
  • DOI:
    10.1007/s11151-015-9488-6
  • 发表时间:
    2015-10-29
  • 期刊:
  • 影响因子:
    0.700
  • 作者:
    David J. Balan;Patrick DeGraba;Francine Lafontaine;Patrick McAlvanah;Devesh Raval;David Schmidt
  • 通讯作者:
    David Schmidt
Adapting Coreference Algorithms to German Fairy Tales
将共指算法应用于德国童话故事

David Schmidt的其他文献

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{{ truncateString('David Schmidt', 18)}}的其他基金

Collaborative Research: Near-Trench Community Geodetic Experiment
合作研究:近海沟群落大地测量实验
  • 批准号:
    2232640
  • 财政年份:
    2023
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Continuing Grant
Collaborative Research: Constraints on Interseismic Locking near the Trench on the Oregon Segment of the Cascadia Subduction Zone Using Seafloor Geodesy (GNSS-A)
合作研究:利用海底大地测量 (GNSS-A) 对卡斯卡迪亚俯冲带俄勒冈段海沟附近的震间锁定进行约束
  • 批准号:
    2127140
  • 财政年份:
    2021
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant
GeoPRISMS Synthesis Workshop: The Geological Fingerprints of Slow Earthquakes
GeoPRISMS 综合研讨会:慢地震的地质指纹
  • 批准号:
    2025105
  • 财政年份:
    2020
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant
CoPe RCN: Cascadia Coastal Hazards Research Coordination Network
CoPe RCN:卡斯卡迪亚沿海灾害研究协调网络
  • 批准号:
    1940034
  • 财政年份:
    2020
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant
GeoPRISMS Postdoctoral Scholar: Refining GPS-Acoustic Processing to Measure Cascadia Subduction
GeoPRISMS 博士后学者:改进 GPS 声学处理以测量卡斯卡迪亚俯冲带
  • 批准号:
    1850685
  • 财政年份:
    2019
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant
NSFGEO-NERC Collaborative Research: Linking geophysics and volcanic gas measurements to contrain the transcrustal magmatic system at the Altiplano-Puna Deformation Anomaly
NSFGEO-NERC 合作研究:将地球物理学和火山气体测量联系起来,以限制高原-普纳变形异常处的穿地壳岩浆系统
  • 批准号:
    1756525
  • 财政年份:
    2018
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant
Collaborative Research: Assessing the State of Locking on the Frontal Thrust of the Cascadia Subduction Zone with Seafloor Geodesy
合作研究:利用海底大地测量评估卡斯卡迪亚俯冲带锋面逆冲锁定状态
  • 批准号:
    1658190
  • 财政年份:
    2017
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant
CC*DNI Campus Design: Enhanced Data Delivery at Fort Hays State University
CC*DNI 校园设计:海斯堡州立大学增强数据传输
  • 批准号:
    1541394
  • 财政年份:
    2016
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant
TWC: Small: Abstract Semantic Processing for Script Security
TWC:小:脚本安全的抽象语义处理
  • 批准号:
    1219746
  • 财政年份:
    2012
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant
Abstract Parsing: Static analysis of dynamically generated string output
摘要解析:动态生成字符串输出的静态分析
  • 批准号:
    0939431
  • 财政年份:
    2009
  • 资助金额:
    $ 27.97万
  • 项目类别:
    Standard Grant

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Collaborative Research: Unraveling the habitat and dynamics of slow slip events through integrated borehole observations in the northern Hikurangi subduction margin
合作研究:通过希库朗伊俯冲边缘北部的综合钻孔观测揭示慢滑事件的栖息地和动态
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