3:00 PM - 3:15 PM
[SSS05-06] An extensive study of clustering features of seismicity in Italy during 2005 to 2016
Keywords:Earthquakes in Italy , space-time modelling
Seismicity clustering features are quite different from region to region. According to the ETAS parameters, the whole study region can be divided into four subregions.
The rupture geometries of large earthquakes, including the 2009-4-6 M6.3 L'Aquila, the 2012-5-20 M6.1 Emilia, the 2016-0-24 M6.0 Amatrice, the 2016-10-30 M6.2 Norcia earthquakes, control the spatial locations of their direct aftershocks. These direct aftershock aftershock mainly concentrate near, some parts close to the parts on the rupture plane with large slips but seldom overlap with them, indicating that aftershocks are the continuation of the rupture process of the mainshocks.
When the focal depth is considered in seismicity modeling, improved probability forecasting of seismicity and hazard assessment can be obtained.