Seismic network XG:Barcelonette (France) aftershok experiment (RESIF-SISMOB, SISMO l'ECOLE)

This dense temporary seismic network was installed after the M=5 earthquake in Ubaye on 14th April 2014. It was deployed by a joined effort of 2 French laboratories : ISTerre (UGA, CNRS, IRD, USMB, IFSTTAR in Grenoble) and Goazur (UCA, CNRS, IRD, OCA in Nice) under the general coordination of the post-seismic french consortium. It completed the permanent RESIF and Sismalp networks which follow seismic activity in the Alps. The region is particulary interesting as it has already been facing seismic swarms (2002-2004, Jennatton et al., 2007, Leclre et al., 2013) and mainshock aftershocks sequences (Thouvenot at al., 2016) in the past. Understanding the physical mechanisms leading to such seismic swarns is a challenge towards a better assessment of seismic hazard in the Ubaye Alpine valley.

这套高密度临时地震台网于2014年4月14日乌拜（Ubaye）河谷发生5级地震后布设完成。该台网由法国两家实验室联合布设：位于格勒诺布尔的ISTerre（包含UGA、CNRS、IRD、USMB、IFSTTAR）与位于尼斯的Goazur（包含UCA、CNRS、IRD、OCA），并由法国震后研究联盟统筹协调。它补充了用于长期监测阿尔卑斯地区地震活动的永久性RESIF与Sismalp台网。该区域具有重要研究价值，历史上曾先后发生地震群活动（2002-2004年，Jennatton等，2007；Leclère等，2013）与主震-余震序列事件（Thouvenot等，2016）。阐明引发此类地震群活动的物理机制，是优化乌拜阿尔卑斯河谷地震危险性评估能力的关键科学挑战。