DOI: 10.1016/j.tecto.2021.228945
论文题名: The June 12, 2017 M6.3 Karaburun-Lesvos earthquake of the Northern Aegean Sea: Aftershock forecasting and stress transfer
作者: Utkucu M. ; Nalbant S.S. ; Pınar A. ; McCloskey J. ; Nicbhloscaidh M. ; Turhan F. ; Yalçın H. ; Kızılbuğa S. ; Coşkun Z. ; Kalkan Ertan E. ; Gülen L.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2021
卷: 814 语种: 英语
中文关键词: 2017 Karaburun-Lesvos earthquake
; aftershock forecasting and triggering
; Aftershock monitoring
; Finite source model
英文关键词: Faulting
; Forecasting
; Aftershock sequence
; Broadband station
; Coulomb stress changes
; Extensional tectonics
; North Anatolian Fault Zone
; Northern aegean seas
; Seismic monitoring
; Teleseismic waveforms
; Earthquakes
; aftershock
; earthquake event
; earthquake rupture
; extensional tectonics
; fault zone
; forecasting method
; monitoring
; seismotectonics
; stress change
; Aegean Islands
; Aegean Sea
; Greece
; Lesbos
; Mediterranean Sea
; Northern Aegean
; Meleagris gallopavo
英文摘要: The June 12, 2017 Karaburun-Lesvos (North Aegean Sea) earthquake occurred along the NW-SE trending Lesvos fault, along the southern strand of the North Anatolian Fault Zone. In the present study seismotectonic aspects of the 2017 Karaburun-Lesvos earthquake and its aftershock sequence are studied. A rupture model based on finite source analysis of the teleseismic waveforms has shown that the earthquake was associated with a failure of single asperity. About 5 days after the mainshock a temporary seismic network of 8 broadband stations (Real-time Aftershock Forecasting in Turkey, RAFT) had been deployed along the Turkish Aegean coast to enhance the existing regional seismic monitoring and the acquired data have been used to relocate the aftershocks. The temporary deployment significantly improved the aftershock detection capacity and resulted in more precise locations. Prior to the monitoring enhancement a single widespread aftershock cluster was observed; however, the relocated aftershocks, augmented by the RAFT stations, identified two distinct spatially isolated clusters. The first day of the aftershock sequence has been used for retrospective real-time aftershock forecasting up to 7 days following the mainshock. Our results indicate that with a method developed by Omi et al. (2013) can be used forecasting aftershocks over a week period successfully employing incompletely detected aftershocks occurred in the first day following the mainshock. Stress tensor analysis of the 33 aftershock source mechanisms has shown local dominance of the extensional tectonics with azimuth and plunge pairs for the three principal stress axes as σ1, σ2 and σ3 are (255°; 76°), (131°; 8°) and (39°; 11°), respectively. Coulomb stress changes imparted by the mainshock onto the nodal planes of the aftershocks show that ~67% of the 33 aftershocks have been exposed to positive stress change at least on one of the nodal planes. © 2021 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170913
Appears in Collections: 气候变化与战略
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作者单位: Disaster Management Application and Research Center, Sakarya UniversitySakarya, Turkey; School of Geosciences, The University of Edinburgh, Edinburgh, United Kingdom; Kandilli Observatory and Earthquake Research Institute, Boğaziçi University, İstanbul, Turkey; Parametre Research Information Planning Company, Mecidiyeköy, İstanbul, Turkey; Department of Geophysics, Engineering Faculty, Sakarya UniversitySakarya, Turkey
Recommended Citation:
Utkucu M.,Nalbant S.S.,Pınar A.,et al. The June 12, 2017 M6.3 Karaburun-Lesvos earthquake of the Northern Aegean Sea: Aftershock forecasting and stress transfer[J]. Tectonophysics,2021-01-01,814