THE JULY 20, 2017 BODRUM/KOS EARTHQUAKE AND TSUNAMI: FIELD SURVEYS, LESSONS and MODELING

Ahmet Cevdet Yalçıner, Alessandro Annunziato, Gerassimos A. Papadopoulos, Gozde Guney Dogan, Hasan Gokhan Guler, Ceren Ozer Sozdinler, Ergin Ulutas, Taro Arikawa, M. Lutfi Suzen, Duygu Tufekci, Utku Kânoğlu, Isikhan Guler, Costas Synolakis

Abstract


A magnitude (Mw) 6.6 earthquake occurred on July 20, 2017 (22:31 UTC) in between Bodrum, Turkey and Kos Island, Greece. Field surveys are conducted in the region (Yalciner et al., 2017) including southern and northern coastlines of Bodrum peninsula, Karaada, Akyaka town and Kos Island. A tide gauge located in Bodrum main port recorded the tsunami. The main objectives of these field surveys are to document tsunami effects along the coast, to obtain the available data on the wave height and inundation extent, and to understand and explain the tsunami source in details. In addition, questionnaires were conducted during the field survey in order to understand evacuation behavior and have clearly shown that the disaster education and public awareness are still low in the region. Numerical modeling studies are carried out in order to investigate the tsunami generation mechanism by comparing model and survey results. It is seen that the source of the earthquake is at the south of Karaada-Black Island and the maximum subsidence of the sea bottom might be about 40 cm. Lessons learnt from this event related to disaster education and public awareness in the region are also discussed. Furthermore, the tsunami warning issues under local short arrival time of tsunamis are commented.

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References


Yalciner et al., (2017), “Bodrum/Kos Earthquake and Tsunami; Post Tsunami Field Survey Report,” http://users.metu.edu.tr/yalciner/ICCE-2018/Report-Bodrum-Kos-Tsunami.pdf




DOI: https://doi.org/10.9753/icce.v36.currents.82