Rupture Process of the M<SUB>w</SUB> 3.3 Earthquake in the St. Gallen 2013 Geothermal Reservoir, Switzerland - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Geophysical Research Letters Year : 2019

Rupture Process of the Mw 3.3 Earthquake in the St. Gallen 2013 Geothermal Reservoir, Switzerland

Abstract

We analyze slip distribution and rupture kinematics of a Mw3.3 induced event that occurred in the St. Gallen geothermal reservoir (NE Switzerland) in 2013. We carry out a two-step procedure: (1) path effects are deconvolved from the seismograms using an empirical Green's function, resulting in relative source time functions at all seismic stations; (2) the relative source time functions are back-projected to the corresponding isochrones on the fault plane. Results reveal that the mainshock rupture propagates toward NNE from the hypocenter with an average velocity of 2,000 m/s. Spatiotemporal organization of foreshocks and aftershocks shows that the mainshock broke a previously less active portion of the fault and suggests that the aftershock sequence could be mainly driven by stress transfer. Applying this method in an operational environment could enable fast retrieval of seismic slip, allowing assessment of fault asperities and structures involved in the reservoir creation process.
Fichier principal
Vignette du fichier
Geophysical Research Letters - 2019 - Kir ly%u2010Proag - Rupture Process of the Mw 3 3 Earthquake in the St Gallen 2013.pdf (5.2 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-03586637 , version 1 (24-02-2022)

Licence

Copyright

Identifiers

Cite

Eszter Király-Proag, Claudio Satriano, Pascal Bernard, Stefan Wiemer. Rupture Process of the Mw 3.3 Earthquake in the St. Gallen 2013 Geothermal Reservoir, Switzerland. Geophysical Research Letters, 2019, 46, pp.7990-7999. ⟨10.1029/2019GL082911⟩. ⟨insu-03586637⟩
15 View
31 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More