Skip to Main content Skip to Navigation
New interface
Journal articles

Nonvolcanic tremor observed in the Mexican subduction zone

Abstract : 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.
Document type :
Journal articles
Complete list of metadata
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Thursday, March 10, 2022 - 12:06:43 PM
Last modification on : Friday, October 21, 2022 - 3:32:40 PM


Geophysical Research Letters -...
Publisher files allowed on an open archive





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⟩



Record views


Files downloads