Evidence of surface rupture associated with historical earthquakes on the Gulbahce Fault Zone (Izmir, Turkiye) and its application for determination of the surface fault-rupture hazard zone

Geckin B. S., Sözbilir H., Özkaymak Ç., Softa M., Spencer J. Q. G., Şahiner E., ...Daha Fazla

NATURAL HAZARDS, cilt.114, sa.2, ss.2189-2218, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 114 Sayı: 2
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s11069-022-05467-9
  • Dergi Adı: NATURAL HAZARDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, IBZ Online, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Environment Index, Geobase, INSPEC, Metadex, PAIS International, Pollution Abstracts, Veterinary Science Database, DIALNET, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.2189-2218
  • Anahtar Kelimeler: Palaeoseismology, Active tectonics, Gulbahce Fault Zone, Surface fault-rupture hazard zone, Western Anatolia, BALIKESIR TRANSFER ZONE, AGE CALIBRATION CURVES, WESTERN ANATOLIA, NEOTECTONIC STRUCTURES, SURROUNDING REGIONS, STRUCTURAL EVIDENCE, CENTRAL GREECE, AEGEAN SEA, EVOLUTION, TURKEY
  • Ankara Üniversitesi Adresli: Evet

Özet

In order to decipher the late Pleistocene-Holocene seismotectonic behavior of the Gulbahce Fault Zone (GBFZ), trench-based palaeoseismological analyses were performed for the first time using optically stimulated luminescence and radiocarbon (C-14) dating. The paleoseismic data from this study shows that (i) GBFZ has been responsible for four surface rupturing earthquakes since the late Pleistocene-Holocene, which occurred at 34.6 +/- 8.6 ka (E1), 14.4 +/- 4.4 ka (E2), 4.3 +/- 2.0 ka (E3), and 0.5 +/- 0.4 ka (E4), (ii) the recurrence interval of destructive earthquakes on GBFZ were found between 1.4 kyr and 6.2 kyr for the Holocene which signifies irregular recurrence interval, (iii) the elapsed time since the most recent surface rupturing earthquake on the GBFZ is 633 year, (iv) the predicted dextral slip rate ranges from 1.37 mm/yr to 4.27 mm/yr for the western splay of the GBFZ. These results show that the GBFZ has completed approximately half of the destructive earthquakes that ruptured the ground surface corresponding to the narrowest time and should be evaluated within the scope of its potential to produce a destructive earthquake in the near future. GIS-based modeling of the surface rupture zone on the GBFZ ranging in width from 40 to 50 m was defined to reduce the risks that may occur in the future on the fault zone.