Source Mechanism And Stress Changes Of The January 25, 2005 Hakkari (Eastern Turkey) Earthquake (Mw=5.7) : Implications For The Earthquake Hazard

Murat UTKUCU; Kubilay ATALAY; Emrah BUDAKOĞLU; Çetin YEŞİLOVA

Makale detayları

Source Mechanism And Stress Changes Of The January 25, 2005 Hakkari (Eastern Turkey) Earthquake (Mw=5.7) : Implications For The Earthquake Hazard

Yazarlar:

Murat UTKUCU | Kubilay ATALAY | Emrah BUDAKOĞLU | Çetin YEŞİLOVA

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Disaster Science and Engineering 2015 Vol.1 Issue 2, pp.31-37

Belge Tipi:

Makale

Yayın Tarihi:

12/2015

Belge Dili:

Türkçe

Document ID (Org No.):

2000682482

Özet:

 

The source mechanism of the January 25, 2005 Hakkari earthquake is obtained from both P wave first motion polarities and waveform modeling. The source mechanism derived from the P wave motion polarities has indicated a dextral faulting along a NW-SE trending rupture plane while sinistral faulting along a NE_SW trending rupture plane. A point-source waveform inversion technique is applied to the teleseismically recorded P and SH waveforms of the earthquake to derive the source process. The data has been satisfactorily matched using two-subevent source process indicating a complex source process with a relatively large strike-slip faulting subevent that followed by a smaller oblique normal faulting subevent. The fact that the active fault map indicate a NW-SE trending thrust fault and NE-SW trending sinistral AkcÌ§alÄ± fault in the near source region has prompted us to select the NE-SW trending nodal planes from both solutions as the fault plane. It is suggested that the earthquake was produced by the AkcÌ§alÄ± fault and the faulting is left-lateral. The overall source process implies a predominantly left-lateral faulting (strike=201o, dip=69o, rake=-24o) with a seismic moment of 3.5x1017 Nm (MWâ‰ˆ5.7). A stress changes due to rupture along the AkcÌ§alÄ± fault well explained the M â‰¥4 seismicity after the earthquake, thus supporting a NE-SW striking fault. The YuÌˆksekova-SÌ§emdinli Fault Zone, which produced most of the following seismicity, was considerably stressed. The results further suggest active strike-slip faulting within or in the very neighborhood of the Bitlis Thrust Zone.

Makale detayları

Source Mechanism And Stress Changes Of The January 25, 2005 Hakkari (Eastern Turkey) Earthquake (Mw=5.7) : Implications For The Earthquake Hazard

Yazarlar: Murat UTKUCU | Kubilay ATALAY | Emrah BUDAKOĞLU | Çetin YEŞİLOVA

Ana Başlıklar: Uygulamalı fizik

Dergi: Disaster Science and Engineering 2015 Vol.1 Issue 2, pp.31-37

Belge Tipi: Makale

Yayın Tarihi: 12/2015

Belge Dili: Türkçe

Document ID (Org No.): 2000682482

Sayı

Yazarlar:

Murat UTKUCU | Kubilay ATALAY | Emrah BUDAKOĞLU | Çetin YEŞİLOVA

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Disaster Science and Engineering 2015 Vol.1 Issue 2, pp.31-37

Belge Tipi:

Makale

Yayın Tarihi:

12/2015

Belge Dili:

Türkçe

Document ID (Org No.):

2000682482