Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/13847
Authors: Vičič, Blaž* 
Aoudia, Abdelkrim* 
Borghi, Alessandra* 
Momeni, Seyyedmaalek* 
Vuan, Alessandro* 
Title: Seismicity rate changes and geodetic transients in Central Apennines
Journal: Geophysical Research Letters 
Series/Report no.: 22/47 (2020)
Publisher: Wiley Agu
Issue Date: 2020
DOI: 10.1029/2020GL090668
Keywords: Transient
Slow-slip
Central Italy
GPS
Template matching
Abstract: Using template matching and GPS data, we investigate the evolution of seismicity and observable deformation in Central Apennines. Seismicity appears more persistent at the base of the seismogenic layer than in the shallower crust. Diffuse activity is reported on segments at depth, alternating along strike with apparent quiescence on segments that experienced one or more Mw6+ earthquakes in 1997, 2009 and 2016. Central Apennines are likely underlain by a sizeable shear zone with areas of diffuse seismicity bounding shallow normal faults where Mw6+ earthquakes occurred. The deformation observed at the surface seems to follow the seismicity variations at the base of seismogenic layer along the Apenninic chain. Principal and independent component analysis of GPS data exhibits a transient when the 2016 foreshock sequence starts. This transient propagated northward from the Campotosto fault up to the Alto Tiberina fault system and has likely loaded the Mw6+ 2016 earthquake sequence.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat
2020GL090668.pdf1.55 MBAdobe PDFView/Open
Show full item record

Page view(s)

45
checked on Mar 27, 2024

Download(s)

34
checked on Mar 27, 2024

Google ScholarTM

Check

Altmetric