Seismic network YP:French part of the Argostoli (Greece) aftershock experiment (RESIF-SISMOB)

Within the framework of the JRA1 work packages (Waveform modelling and site coefficients for basin response and topography) of the FP7 EU-NERA 2010-2014 project (Network of European Research Infrastructures for Earthquake Risk Assessment and Mitigation), a dense seismological temporary network was deployed in the Argostoli sedimentary basin (Cephalonia island, Greece) in order to investigate basin effects and spatial variation of ground motion. Tooking place during the period September 15th, 2011 to April 20th, 2012, the seismological experiment comprised 62 seismological stations (mid-band velocimeters, eventually coupled with accelerometers) deployed across the Argostoli basin with inter-station of about 50 meters. 2 mid-band velocimeters were installed at the eastern- and western-most part of the island in order to improve hypocentral location of earthquakes recorded during the experiment. Finally, two dense seismic arrays (with inter-station distance from 5 m to 160 m) were also deployed inside the basin to thoroughly understand seismic wave field composition. More than 3000 seismic events were recorded by this seismological network, among which 817 event with a signal-to-noise ratio above 3.

本数据集依托欧盟第七框架计划（FP7）2010-2014年EU-NERA（欧洲地震风险评估与减缓研究基础设施网络，Network of European Research Infrastructures for Earthquake Risk Assessment and Mitigation）项目的JRA1工作包（盆地响应与地形的波形模拟及场地系数方向），研究团队在希腊凯法利尼亚岛的阿尔戈斯托利沉积盆地部署了一套密集临时地震台网，以探究盆地效应与地面运动的空间变异特征。本次地震实验实施于2011年9月15日至2012年4月20日期间，共布设62个地震台站，均为中带测速仪（mid-band velocimeters），其中部分台站配套安装了加速度计（accelerometers），台站间距约50米。为提升实验期间记录地震的震源定位（hypocentral location）精度，研究团队额外在该岛屿的最东端与最西端各安装了1台中带测速仪。此外，为全面解析地震波场组成，研究团队还在盆地内部署了2套密集地震台阵（seismic arrays），台站间距范围为5米至160米。该地震台网累计记录到超过3000个地震事件，其中817个事件的信噪比（signal-to-noise ratio）高于3。