Slip distribution of the February 6, 2023 Mw 7.8 and Mw 7.6, Kahramanmaras, Turkey earthquake sequence in the East Anatolian Fault Zone

On February 6, 2023, two large earthquakes occurred near the Turkish town of Kahramanmaras. The moment magnitude (Mw) 7.8 mainshock ruptured a 310 km-long segment of the left-lateral East Anatolian Fault, propagating through multiple releasing step-overs. The Mw 7.6 aftershock involved nearby left-lateral strike-slip faults of the East Anatolian Fault Zone, causing a 150 km-long rupture. We use remote-sensing observations to constrain the spatial distribution of coseismic slip for these two events and the February 20 Mw 6.4 aftershock near Antakya. Pixel tracking of optical and synthetic aperture radar data of the Sentinel-2 and Sentinel-1 satellites, respectively, provide near-field surface displacements. High-rate Global Navigation Satellite System data constrain each event separately. Coseismic slip extends from the surface to about 15 km depth with a shallow slip deficit. For the mainshock, rupture propagation stopped southward at the diffuse termination of the East Anatolian fault and tapered off northward into the Pütürrge segment, some 20 km south of the 2020 Mw 6.8 Elazığ earthquake, highlighting a potential seismic gap. This repository contains the finite slip distribution of the February 6, 2023 Mw 7.8 Kahramanmaras mainshock and Mw 7.6 Elbinstan aftershock, as well as the slip distribution of the second largest aftershock, the February 20, 2023 Mw 6.4 Antakya earthquake. The repository also provides the slip distribution of the 2020 Mw 6.8 Elazığ earthquake.