Using systematically characterized low‐frequency earthquakes as a fault probe in Guerrero, Mexico

DOI Web Site Web Site 被引用文献17件
  • William B. Frank
    Équipe de Sismologie, Institut de Physique du Globe de Paris Paris Sorbonne Cité CNRS Paris France
  • Nikolaï M. Shapiro
    Équipe de Sismologie, Institut de Physique du Globe de Paris Paris Sorbonne Cité CNRS Paris France
  • Allen L. Husker
    Instituto de Geofísica Universidad Nacional Autónoma de México Mexico City Mexico
  • Vladimir Kostoglodov
    Instituto de Geofísica Universidad Nacional Autónoma de México Mexico City Mexico
  • Alexey Romanenko
    Department of Information Technology Novosibirsk State University Novosibirsk Russia
  • Michel Campillo
    Institut des Sciences de la Terre Université Joseph Fourier, CNRS, IRD Grenoble France

書誌事項

公開日
2014-10
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/2014jb011457
公開者
American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>Studies of low‐frequency earthquakes (LFEs) have focused on detecting events within previously identified tectonic tremor. However, the principal LFE detection tools of matched‐filter searches are intrinsically incapable of detecting events that have not already been characterized previously as a template event. In this study, we therefore focus on generating the largest number possible of LFE templates by uniformly applying a recently developed LFE template detection method to a 2.5 yearlong data set in Guerrero, Mexico. Using each of the detected templates in a matched‐filter search, we then form event families that each represents a single source. We finally develop simple, empirical statistics to select the event families that represent LFEs. Our resulting catalog contains 1120 unique LFE sources and a total of 1,849,486 detected LFEs over the 2.5 yearlong data set. The locations of the LFE sources are then divided into subcatalogs based on their distance from the subduction trench. Considering each LFE as a small unit of slip along the subduction interface, we observe discrete episodes of LFE activity in the region associated with large slow‐slip events; this is in direct contrast to the near‐continuous activity observed 35 km farther downdip within the previously identified LFE/tremor sweet spot.</jats:p>

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