Coseismic ruptures of the 24 August 2016, M w 6.0 Amatrice earthquake (central Italy)

Autor: Alessandra Smedile, Francesca Romana Cinti, Raffaele Azzaro, Riccardo Civico, Tullio Ricci, Lu. Alfonsi, Giuliana Alessio, F. Villani, Marco Caciagli, Stefano Pucci, Daniela Pantosti, R. De Ritis, Rosa Nappi, Luigi Cucci, Rosella Nave, Francesco Mazzarini, Carlo Alberto Brunori, Vincenzo Sapia, Simone Tarquini, Germana Gaudiosi, P. M. De Martini
Rok vydání: 2017
Předmět:
Zdroj: Geophysical Research Letters. 44:2138-2147
ISSN: 1944-8007
0094-8276
DOI: 10.1002/2016gl071859
Popis: On 24 August 2016, a Mw 6.0 normal faulting earthquake struck central Italy, causing about 300 fatalities and heavy damage. A geological survey collected the coseismic effects observed at the surface in order to evaluate two competing hypotheses about their nature: surface faulting versus gravitational deformation. We find that the most significant geological effect is a 5.2 km-long alignment of ground ruptures along the Mt. Vettore Fault-System. These ruptures are independent from lithology, topography, morphology and change in slope and exhibit an average dip slip displacement of ~13 cm. Geometry, kinematics and dimensional properties of this zone of deformation strongly lead us to favor the primary surface faulting hypothesis that fits well the predicted estimates from experimental scaling-law relationships. Our study provides relevant hints for surface faulting in extensional domains, contributing to implement the worldwide database of the moderate earthquakes.
Databáze: OpenAIRE
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