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http://hdl.handle.net/2122/14201
Authors: | Vuan, Alessandro* Brondi, Piero* Sugan, Monica* Chiaraluce, Lauro* Di Stefano, Raffaele* Michele, Maddalena* |
Title: | Intermittent Slip Along the Alto Tiberina Low‐Angle Normal Fault in Central Italy | Journal: | Geophysical Research Letters | Series/Report no.: | 17/47 (2020) | Publisher: | Wiley Agu | Issue Date: | 2020 | DOI: | 10.1029/2020GL089039 | Subject Classification: | 04.06. Seismology | Abstract: | The Alto Tiberina normal fault (ATF) in central Italy is a 50-km-long crustal structure that dips at a low angle (15–20◦). Events on the fault plane are about 10 times less frequent than those located in its shallower syn- and antithetic hanging-wall splays. To enhance ATF catalog and achieve a better understanding of the degree of coupling in the fault system, we apply a template matching technique in the 2010–2014 time window.We augment by a factor 5 the detections and decrease the completeness magnitude to negative values. Contrary to what previously observed on ATF, we highlight intermittent seismic activity and long-lasting clusters interacting with sequences on the shallower splays. One of these episodes of prolonged seismic activity, detected at the end of 2013 on a 30-km-long ATF segment, suggest the ATF active role during an aseismic transient unraveled by geodetic data. |
Appears in Collections: | Article published / in press |
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59_Vuan_EtAl_GRL_2020.pdf | 4.91 MB | Adobe PDF | View/Open |
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