BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Talks.cam//talks.cam.ac.uk// X-WR-CALNAME:Talks.cam BEGIN:VEVENT SUMMARY:Geodetic Insights into the Earthquake Cycle on the East Anatolian Fault - Seda Özarpacı (Yıldız Technical University/ İstanbul Türkiye ) DTSTART:20260128T140000Z DTEND:20260128T150000Z UID:TALK243142@talks.cam.ac.uk CONTACT:Adriano Gualandi DESCRIPTION:The East Anatolian Fault (EAF) is a major left-lateral plate b oundary between Anatolia and Arabia and\, together with the North Anatolia n Fault\, accommodates the westward motion of Anatolia at ~\;10 mm/yr. Here\, I present a geodetic perspective on the earthquake cycle along the eastern EAF\, spanning interseismic deformation\, coseismic rupture\, and ongoing postseismic transients. Using near-fault and far-field GNSS obser vations (2015–2020)\, complemented by in situ creep measurements from cr eepmeters installed within a tunnel crossing the fault near Palu\, we iden tify widespread shallow aseismic slip along the Palu segment within the El azığ–Bingöl seismic gap\, with local creep rates approaching the long -term plate motion. The 24 January 2020 Mw 6.8 Sivrice (Elazığ) earthqua ke then provided a unique opportunity to link interseismic coupling to cos eismic behavior: joint kinematic modelling using strong-motion\, GNSS\, te leseismic waveforms\, and InSAR shows that rupture was confined to ~\; 45 km of the ~\;95 km Sivrice–Pütürge segment\, initiating near a weakly coupled creeping section and propagating unilaterally southwestward without producing surface rupture. Following the 2020 event\, we densifie d GNSS monitoring across the Pütürge segment to capture postseismic defo rmation\; however\, the 6 February 2023 Mw 7.8 and Mw 7.6 Kahramanmaraş e arthquakes revealed an even broader deformation footprint. Leveraging Tür kiye’s continuous GNSS network\, we show that these events produced far- field displacements extending beyond 700 km\, exceeding predictions from s tandard elastic dislocation models and implying plate-scale interactions w ith important consequences for seismic hazard assessment. I will conclude by presenting our ongoing efforts to resolve and interpret the postseismic deformation following the 2023 sequence using GNSS time series along the EAF. LOCATION:Wolfson Lecture Theatre END:VEVENT END:VCALENDAR