TAILIEUCHUNG - Seismic a and b-values and crustal parameters of Samos Island-Aegean Sea, Lesvos Island-Karaburun, Kos Island-Gökova Bay earthquakes

In recent years, seismicity has increased considerably in the Aegean Sea region and there have been earthquakes in which people lost their lives. The major earthquakes, Kos Island-Gökova Bay (Mw = ), Lesvos Island-Karaburun (İzmir) (Mw = ) and Samos Island-Aegean Sea (Mw = ) occurred in the Aegean Sea and affected Aegean region strongly. Within the scope of this study, the seismic b-value of these major earthquakes was calculated in order to perform earthquake statistical analysis. Seismic a and b-values within the first 24 h and 14 days after the mainshock determination of Kos Island-Gökova Bay, Lesvos Island-Karaburun (İzmir) and Samos Island-Aegean Sea earthquakes were evaluated for the first time in this study. | Turkish Journal of Earth Sciences Turkish J Earth Sci 2021 30 833-850 http earth TÜBİTAK Research Article doi yer-2107-13 Seismic a and b-values and crustal parameters of Samos Island-Aegean Sea Lesvos Island-Karaburun Kos Island-Gökova Bay earthquakes 1 2 1 1 Oya ANKAYA PAMUKÇU Fikret DOĞRU Ayça ÇIRMIK Düzgün GÖNEŞ 1 Department of Geophysical Engineering Faculty of Engineering Dokuz Eylül University Buca İzmir Turkey 2 Department of Construction Technology Atatürk University Oltu Vocational Collage Erzurum Turkey Received Accepted Published Online Final Version Abstract In recent years seismicity has increased considerably in the Aegean Sea region and there have been earthquakes in which people lost their lives. The major earthquakes Kos Island-Gökova Bay Mw Lesvos Island-Karaburun İzmir Mw and Samos Island-Aegean Sea Mw occurred in the Aegean Sea and affected Aegean region strongly. Within the scope of this study the seismic b-value of these major earthquakes was calculated in order to perform earthquake statistical analysis. Seismic a and b-values within the first 24 h and 14 days after the mainshock determination of Kos Island-Gökova Bay Lesvos Island-Karaburun İzmir and Samos Island-Aegean Sea earthquakes were evaluated for the first time in this study. The a and b-values were found as and for the Samos Island-Aegean Sea earthquake and for the Lesvos Island-Karaburun İzmir earthquake and for the Kos Island-Gökova Bay earthquake aftershocks in 24 h. The a and b-values were calculated as and for the Samos Island-Aegean Sea and for the Lesvos Island-Karaburun İzmir earthquake and for the Kos Island-Gökova Bay earthquake and its aftershocks in 14 days. In addition the gravity Moho depth effective elastic thickness tensor analysis and b-values were compared together for investigating the crustal features of .

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