@article{fdi:010080999, title = {{A} stochastic view of the 2020 {E}lazig {M}-w 6.8 earthquake ({T}urkey)}, author = {{R}agon, {T}. and {S}imons, {M}. and {B}letery, {Q}uentin and {C}avalie, {O}. and {F}ielding, {E}.}, editor = {}, language = {{ENG}}, abstract = {{U}ntil the {M}-w 6.8 {E}lazig earthquake ruptured the central portion of the {E}ast {A}natolian {F}ault ({EAF}, {T}urkey) on {J}anuary 24, 2020, the region had only experienced moderate magnitude ({M}-w < 6.2) earthquakes over the last century. {W}e use geodetic data to constrain a model of subsurface fault slip. {W}e adopt an unregularized {B}ayesian sampling approach relying solely on physically justifiable prior information and account for uncertainties in both the assumed elastic structure and fault geometry. {T}he rupture of the {E}lazig earthquake was mostly unilateral, with two primary disconnected regions of slip. {T}his rupture pattern may be controlled by structural complexity. {B}oth the {E}lazig and 2010 {M}-w 6.1 {K}ovancilar events ruptured portions of the central {EAF} that are believed to be coupled during interseismic periods, and the {P}alu segment is the last portion of the {EAF} showing a large fault slip deficit which has not yet ruptured in the last 145 years. {P}lain {L}anguage {S}ummary {T}he {E}lazig earthquake ruptured the central portion of the {E}ast {A}natolian {F}ault ({EAF}), a major strike-slip fault in eastern {T}urkey, on {J}anuary 24, 2020. {B}efore this event, the region had only experienced moderate magnitude earthquakes over the last century. {W}e aim at understanding the rupture of this earthquake, and how it relates to the historical ruptures of the {EAF}. {T}o do so, we use measurements of displacement at the surface to image the subsurface slip on the fault that occurred during the earthquake. {A}s the characteristics of the crust are poorly known, we make realistic assumptions on the fault geometry and {E}arth structure, and build on novel approaches to account for the possible biases of our assumptions and to characterize the uncertainties of the imaged slip. {W}e suggest that the {E}lazig earthquake rupture may be controlled by structural complexity of the fault, and that two main regions of slip surround a fault bend acting as a barrier to rupture propagation. {W}e also suggest that the fault segment located between {L}ake {H}azar and the city of {P}alu is the last portion of the central {EAF}, showing a large deficit of the fault slip, which has not yet ruptured in the last 145 years.}, keywords = {{TURQUIE} ; {ANATOLIE} ; {ELAZIG}}, booktitle = {}, journal = {{G}eophysical {R}esearch {L}etters}, volume = {48}, numero = {3}, pages = {e2020{GL}090704 [13p.]}, ISSN = {0094-8276}, year = {2021}, DOI = {10.1029/2020gl090704}, URL = {https://www.documentation.ird.fr/hor/fdi:010080999}, }