Present day strike-slip deformation within the southern part of the Izmir-Balikesir Transfer Zone based on GNSS data and implications for seismic hazard assessment in western Anatolia

Eyubagil E. E., SOLAK H. İ., Kayak U. S., TİRYAKİOĞLU İ., SÖZBİLİR H., AKTUĞ B., ...More

TURKISH JOURNAL OF EARTH SCIENCES, vol.30, no.2, pp.143-160, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.3906/yer-2005-26
  • Journal Name: TURKISH JOURNAL OF EARTH SCIENCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Geobase, INSPEC, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.143-160
  • Keywords: Izmir-Balikesir Transfer Zone, Global Navigation Satellite System, slip rate, geodetic recurrence interval, strike-slip tectonics, AEGEAN SEA, FAULT ZONE, NEOTECTONIC STRUCTURES, SURROUNDING REGIONS, CRUSTAL DEFORMATION, STRUCTURAL EVIDENCE, TECTONIC EVOLUTION, ACTIVE TECTONICS, FOCAL MECHANISMS, GEODETIC STRAIN
  • Ankara University Affiliated: Yes

Abstract

Herein, a combined analysis of Global Navigation Satellite System-derived strain rate maps, in accordance with recent seismicity, was presented to reveal that the N-S extension is accommodated primarily by strike-slip faulting of the Izmir-Balikesir Transfer Zone (IBTZ), where a counter clockwise rotation (similar to 25-100 degrees/Myr) along the vertical axis is dominant. The results indicated that strike-slip segments within the IBTZ show variable transport sense and amount of slip along them, and they connect by hard linkage relay ramps with the dip to oblique slip normal faults. According to the strain map, the Karaburun Peninsula has the largest strain rates, at 137 nano strain (nstrain)/yr extension (NE-SW) and 126 nstrain/yr (NW-SE) compression.