Comparative study of tectonic tremor locations: Characterization of slow earthquakes in Guerrero, Mexico

DOI Web Site Web Site 被引用文献14件 参考文献57件
  • J. Maury
    Earth and Planetary Science University of Tokyo Tokyo Japan
  • S. Ide
    Earth and Planetary Science University of Tokyo Tokyo Japan
  • V. M. Cruz‐Atienza
    Instituto de Geofísica Universidad Nacional Autónoma de México Mexico City Mexico
  • V. Kostoglodov
    Instituto de Geofísica Universidad Nacional Autónoma de México Mexico City Mexico
  • G. González‐Molina
    Instituto de Geofísica Universidad Nacional Autónoma de México Mexico City Mexico
  • X. Pérez‐Campos
    Instituto de Geofísica Universidad Nacional Autónoma de México Mexico City Mexico

書誌事項

公開日
2016-07
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/2016jb013027
公開者
American Geophysical Union (AGU)

この論文をさがす

説明

<jats:title>Abstract</jats:title><jats:p>Deep tectonic tremor in Guerrero, Mexico, has been observed using dense temporal seismic networks (i.e., the Meso‐American Subduction Experiment and Guerrero Gap Experiment (G‐GAP) arrays) during two different time periods. We apply a set of seismic waveform analysis methods to these data sets to constrain the locations of tremors and determine the associated moment tensors. First we detect and locate the tremors. Next, very low frequency (VLF) signals are identified by stacking waveform data during tremor bursts, and their moment tensors are determined. Finally, to better investigate the link between tremors and VLF earthquakes, we detect VLF events using a matched filtering algorithm to search continuous seismic records. None of the 11 VLF events detected by this method occurred in the absence of tremor bursts suggesting they are indeed part of the same phenomena. Unlike previous investigations, our results for the G‐GAP period reveal that downdip tremor activity (i.e., in the so‐called “sweet spot”) is segmented into two patches separated by 40 km in the along‐trench direction, indicating possible variations in the geometry of the plate interface and/or slab effective pressure. Moment tensors of VLF signals are consistent with shear slip on the near‐horizontal plate interface, but source depths are about 5 km deeper than the established plate interface. The slip directions of the VLF events are slightly (~10°) counterclockwise of the plate convergence direction, indicating that strain energy promoting left‐lateral strike‐slip motion may accumulate in the continental crust during the interseismic period.</jats:p>

収録刊行物

被引用文献 (14)*注記

もっと見る

参考文献 (57)*注記

もっと見る

関連プロジェクト

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ