The June 12, 2017 M6.3 Karaburun-Lesvos earthquake of the Northern Aegean Sea: Aftershock forecasting and stress transfer
The June 12, 2017 M6.3 Karaburun-Lesvos earthquake of the Northern Aegean Sea: Aftershock forecasting and stress transfer
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2017年6月12日北爱琴海M6.3卡拉布伦-莱斯沃斯地震:余震预报和应力转移
DOI:
10.1016/j.tecto.2021.228945
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发表时间:
2021
期刊:
影响因子:
2.9
通讯作者:
Utkucu M
中科院分区:
文献类型:
--
作者:
Utkucu M
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 asσ1,σ2andσ3are (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.
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影响因子:
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DOI:
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期刊:
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N. Svigkas
DOI:
--
发表时间:
2009
期刊:
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DOI:
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发表时间:
2013
期刊:
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