Uncovering the geodetic signature of silent slip through repeating earthquakes - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Geophysical Research Letters Année : 2015

Uncovering the geodetic signature of silent slip through repeating earthquakes

Résumé

Slow transient slip that releases stress along the deep roots of plate interfaces is most often observed on regional GPS networks installed at the surface. The detection of slow slip is not trivial if the dislocation along the fault at depth does not generate a geodetic signal greater than the observational noise level. Instead of the typical workflow of comparing independently gathered seismic and geodetic observations to study slow slip, we use repeating low-frequency earthquakes to reveal a previously unobserved slow slip event. By aligning GPS time series with episodes of low-frequency earthquake activity and stacking, we identify a repeating transient slip event that generates a displacement at the surface that is hidden under noise prior to stacking. Our results suggest that the geodetic investigation of transient slip guided by seismological information is essential in exploring the spectrum of fault slip.
Fichier principal
Vignette du fichier
2015GL063685.pdf (4.92 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

insu-03579978 , version 1 (18-02-2022)

Licence

Copyright (Tous droits réservés)

Identifiants

Citer

William B. Frank, Mathilde Radiguet, Baptiste Rousset, Nikolaï M. Shapiro, Allen L. Husker, et al.. Uncovering the geodetic signature of silent slip through repeating earthquakes. Geophysical Research Letters, 2015, 42, pp.2774-2779. ⟨10.1002/2015GL063685⟩. ⟨insu-03579978⟩
51 Consultations
26 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More