scholarly journals Loading Rate Variations Along a Midcrustal Shear Zone Preceding the M w 6.0 Earthquake of 24 August 2016 in Central Italy

2017 ◽  
Vol 44 (24) ◽  
Author(s):  
A. Vuan ◽  
M. Sugan ◽  
L. Chiaraluce ◽  
R. Di Stefano
Keyword(s):  
Shear Zone ◽  
Loading Rate ◽  
Central Italy

Mesostructural analysis of S-C fabrics in a shallow shear zone of the Umbria–Marche Apennines (Central Italy)

2014 ◽  
Vol 409 (1) ◽  
pp. 149-166 ◽  
Author(s):  
G. Lena ◽  
M. R. Barchi ◽  
W. Alvarez ◽  
F. Felici ◽  
G. Minelli
Keyword(s):  
Shear Zone ◽  
Central Italy ◽  
Mesostructural Analysis

Post-seismic deformation related to the 2016 central Italy seismic sequence from GPS displacement time-series

2021 ◽  
Author(s):  
Eugenio Mandler ◽  
Maria Elina Belardinelli ◽  
Enrico Serpelloni ◽  
Letizia Anderlini ◽  
Adriano Gualandi ◽  
...  
Keyword(s):  
Time Series ◽  
Shear Zone ◽  
Central Italy ◽  
Transient Signal ◽  
Driving Mechanism ◽  
Far Field ◽  
Crust And Upper Mantle ◽  
Epicentral Area ◽  
Brittle Ductile Transition ◽  
Seismic Deformation

<p>The 2016-2017 Central Italy earthquake sequence was characterized by three main events striking the central Apennines between August 2016 and October 2016 with a Mw ∈ [5.9 to 6.5], plus four earthquakes occurring in January 2017 with a Mw ∈ [5.0; 5.5]. Here we study 85 Global Positioning System (GPS) stations active during the post-seismic phase in a region within a radius of 100 km around the epicentral area, including near and far-field domains. We separate the post-seismic deformation from other, mainly seasonal, deformation signals present in ground displacement time-series via a variational Bayesian Independent Component Analysis (vbICA) technique. Excluding the postseismic transient signal, we found that all the other components are due to hydrological processes, and found no evidence of pre-seismic deformation signals with a spatial and temporal pattern that can be ascribed to a precursory deformation. We study the role played by afterslip on the main structures activated during the co-seismic phase, and we infer the activation during the post-seismic phase of the Paganica fault, which is located further south of the 2016-2017 epicenters and did not rupture during the co-seismic phase. We investigate an aseismic activation of the ∼ 2 − 3 km thick subhorizontal layer of seismicity, which bounds at depth the SW-dipping normal faults where the mainshocks nucleated, and which has been interpreted as a shear zone. Moreover we consider the possibility that the shear zone marks the brittle-ductile transition including the viscoelastic relaxation of the lower crust and upper mantle as a driving mechanism of the post-seismic displacement. However, neither afterslip nor viscoelasticity can fully explain the observations alone: the former is capable of satisfactorily explaining only the data in the epicentral area but it generally underestimates the displacement in the far-field domain; the latter cannot simultaneously explain the displacement observed in the near-field and far-field domains. Hence we infer a mixed contribution of these two mechanisms. </p>

Elevated shear zone loading rate during an earthquake cluster in eastern California

Geology ◽  
2008 ◽  
Vol 36 (6) ◽  
pp. 507 ◽  
Author(s):  
Michael Oskin ◽  
Lesley Perg ◽  
Eitan Shelef ◽  
Michael Strane ◽  
Emily Gurney ◽  
...  
Keyword(s):  
Shear Zone ◽  
Loading Rate ◽  
Earthquake Cluster

Modelling herbicide treatment impact on groundwater quality in a central Italy area

Agronomie ◽  
2001 ◽  
Vol 21 (3) ◽  
pp. 267-276
Author(s):  
Daniela Businelli ◽  
Enrico Tombesi ◽  
Marco Trevisan
Keyword(s):  
Groundwater Quality ◽  
Central Italy ◽  
Herbicide Treatment

The network contract in the agrifood industry: An exploratory study on collaborative drivers in central Italy

2019 ◽  
pp. 335-358
Author(s):  
Lorenzo Compagnucci ◽  
Alessio Cavicchi ◽  
Francesca Spigarelli
Keyword(s):  
Exploratory Study ◽  
Central Italy
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