A submarine area close to the Turkish and Greek border between the cities of Samos-Greece and Seferihisar-Turkey has been shaked on October 30, 2020 by a Mw= earthquake. In this study, the finite source mechanism of the Samos earthquake was investigated using geodetic methods and the coseismic behavior of the earthquake was modeled. The observed coseismic displacements at 62 sites were inverted for the fault geometry and the slips. The mainshock did not generate an on-land surface rupture. However, the uniform slip modeling shows a finite source of km long and 16 km wide rupture, which slips m along a north dipping normal fault extending from the Aegean Sea floor to a depth down to ~13 km. | Turkish Journal of Earth Sciences Turkish J Earth Sci 2021 30 718-737 http earth TÜBİTAK Research Article doi yer-2101-18 GPS derived finite source mechanism of the 30 October 2020 Samos earthquake Mw in the Aegean extensional region 1 2 3 4 5 6 Bahadır AKTUĞ İbrahim TİRYAKİOĞLU Hasan SÖZBİLİR Haluk ÖZENER 3 7 8 9 2 Çağlar ÖZKAYMAK Cemal Özer YİĞİT Halil İbrahim SOLAK Eda Esma EYÜBAGİL 6 10 4 Bengisu GELİN Orhan TATAR Mustafa SOFTA 1 Department of Geophysical Engineering Ankara University Ankara Turkey 2 Department of Geomatics Engineering Engineering Faculty Afyon Kocatepe University Afyonkarahisar Turkey 3 Earthquake Implementation and Research Center of Afyon Kocatepe University Afyonkarahisar Turkey 4 Department of Geological Engineering Engineering Faculty Dokuz Eylül University İzmir Turkey 5 Earthquake Research and Application Center of Dokuz Eylül University İzmir Turkey 6 Department of Geodesy Kandilli Observatory and Earthquake Research Institute Boğaziçi University İstanbul Turkey 7 Department of Geological Engineering Engineering Faculty Afyon Kocatepe University Afyonkarahisar Turkey 8 Faculty of Engineering Department of Geomatics Engineering Gebze Technical University Gebze-Kocaeli Turkey 9 Distance Education Vocational School Afyon Kocatepe University Afyonkarahisar Turkey 10 Faculty of Engineering Department of Geological Engineering Cumhuriyet University Sivas Turkey Received Accepted Published Online Final Version Abstract A submarine area close to the Turkish and Greek border between the cities of Samos-Greece and Seferihisar-Turkey has been shaked on October 30 2020 by a Mw earthquake. In this study the finite source mechanism of the Samos earthquake was investigated using geodetic methods and the coseismic behavior of the earthquake was modeled. The observed coseismic displacements at 62 sites were inverted for the fault geometry and the slips. The mainshock did not .
