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Article Dans Une Revue Geophysical Research Letters Année : 2021

A stochastic view of the 2020 Elazığ Mw6.8 earthquake (Turkey)

Théa Ragon
  • Fonction : Auteur
Mark Simons
  • Fonction : Auteur
Quentin Bletery
Olivier Cavalié
  • Fonction : Auteur
Eric Fielding
  • Fonction : Auteur

Résumé

Until the Mw 6.8 Elazığ earthquake ruptured the central portion of the East Anatolian Fault (EAF, Turkey) on January 24, 2020, the region had only experienced moderate magnitude (Mw < 6.2) earthquakes over the last century. We use geodetic data to constrain a model of subsurface fault slip. We adopt an unregularized Bayesian sampling approach relying solely on physically justifiable prior information and account for uncertainties in both the assumed elastic structure and fault geometry. The rupture of the Elazığ earthquake was mostly unilateral, with two primary disconnected regions of slip. This rupture pattern may be controlled by structural complexity. Both the Elazığ and 2010 Mw 6.1 Kovancılar events ruptured portions of the central EAF that are believed to be coupled during interseismic periods, and the Palu segment is the last portion of the EAF showing a large fault slip deficit which has not yet ruptured in the last 145 years.
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Dates et versions

hal-03102456 , version 1 (08-01-2021)

Identifiants

Citer

Théa Ragon, Mark Simons, Quentin Bletery, Olivier Cavalié, Eric Fielding. A stochastic view of the 2020 Elazığ Mw6.8 earthquake (Turkey). Geophysical Research Letters, 2021, 48 (3), pp.e2020GL090704. ⟨10.1029/2020GL090704⟩. ⟨hal-03102456⟩
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