Nonvolcanic tremor observed in the Mexican subduction zone - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Geophysical Research Letters Année : 2008

Nonvolcanic tremor observed in the Mexican subduction zone

Juan S. Payero
  • Fonction : Auteur
Vladimir Kostoglodov
  • Fonction : Auteur
Nikolai Shapiro
Takeshi Mikumo
  • Fonction : Auteur
Arturo Iglesias
  • Fonction : Auteur
Xyoli Pérez-Campos
  • Fonction : Auteur
Robert W. Clayton
  • Fonction : Auteur

Résumé

Nonvolcanic tremor (NVT) activity is revealed as episodes of higher spectral amplitude at 1-8 Hz in daily spectrograms from the continuous seismological records in Guerrero, Mexico. The analyzed data cover a period of 2001-2007 when in 2001-2002 a large slow slip event (SSE) had occurred in the Guerrero-Oaxaca region, and then a new large SSE occurred in 2006. The tremor burst is dominated by S-waves. More than 100 strong NVT bursts were recorded in the narrow band of ~40 × 150 km2 to the south of Iguala City and parallel to the coastline. Depths of NVT hypocenters are mostly scattered in the continental crust between 5 and 40 km depth. Tremor activity is higher during the 2001-2002 and 2006 SSE compared with that for the ``quiet'' period of 2003-2005. While resistivity pattern in Guerrero does not correlate directly with the NVT distribution, gravity and magnetic anomaly modeling favors a hypothesis that the NVT is apparently related to the dehydration and serpentinization processes.
Fichier principal
Vignette du fichier
Geophysical Research Letters - 2008 - Payero - Nonvolcanic tremor observed in the Mexican subduction zone.pdf (293.52 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

insu-03603730 , version 1 (10-03-2022)

Licence

Copyright (Tous droits réservés)

Identifiants

Citer

Juan S. Payero, Vladimir Kostoglodov, Nikolai Shapiro, Takeshi Mikumo, Arturo Iglesias, et al.. Nonvolcanic tremor observed in the Mexican subduction zone. Geophysical Research Letters, 2008, 35, ⟨10.1029/2007GL032877⟩. ⟨insu-03603730⟩
18 Consultations
10 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More