Interplay of tectonic and dynamic processes shaping multilayer extensional system in southern-central Apennines.

ABSTRACT: High-hazard seismic zones can remain silent over centuries with meager seismicity rates challenging our understanding of seismic processes. We focus on the comprehensive analysis of cascading episodes of swarms and seismic sequences following the 2009 L'Aquila mainshock (M_W 6.3) in the southern-central Apennine that previously experienced ~ M7 earthquakes. We enhance the seismic catalog, unmasking low-magnitude seismicity down to completeness magnitude M_L ~ 0, and we unveil that the microseismicity might be secondarily triggered by the L'Aquila mainshock, influencing the frictional properties in the nearby fault zones or opening fault valves generating the intense seismic activity detected from 2009 to 2013. The diffusivity, observed in the most seismic episodes, and

SUBMITTER: de Nardis R 

PROVIDER: S-EPMC11306752 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature