An assessment of Holocene seismic activity on 1944 Earthquake Segment, North Anatolian Fault Zone (Turkey)

Caglayan A., IŞIK V., Saber R.

GEOSCIENCES JOURNAL, cilt.23, sa.5, ss.805-822, 2019 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 23 Sayı: 5
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1007/s12303-018-0075-3
  • Dergi Adı: GEOSCIENCES JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.805-822
  • Anahtar Kelimeler: Holocene activity, paleoseismology, radiocarbon age, fault-slip rate, North Anatolian Fault Zone, SLIP DISTRIBUTION, WESTERN TURKEY, PALEOSEISMOLOGIC RECORD, WESTWARD PROPAGATION, BOLU, KINEMATICS, EXTENSION, RUPTURE, SYSTEM, REGION
  • Ankara Üniversitesi Adresli: Evet

Özet

The 1944 earthquake segment of the North Anatolian Fault Zone contains paleoseismological signatures of major earthquake events. The segment consists of three active main faults and secondary faults showing anastomosing fault pattern. Stratigraphic and structural relationships and radiocarbon ages from trench excavation reveal that the main active fault located at the northernmost part of the region has produced four major earthquakes events up to now. These events, from north to south, correspond to 1944, 1668, 967, and 300 AD earthquakes on the segment. Our findings suggest that earthquake recurrence interval on the segment range from 276 +/- 30 to similar to 700 years. The amount of displacement caused by surface faulting and earthquake recurrence interval indicates that the slip rate along the 1944 earthquake segment is 17-21 mm/yr in the late Holocene.