Cosesimic liquefaction phenomena from DInSAR after the May 20, 2012 Emilia earthquake

Albano, Matteo; Saroli, Michele; Modoni, Giuseppe; Chini, Marco; Moro, Marco; Bignami, Christian; Pulvirenti, Luca; Pierdicca, Nazzareno; Falcucci, Emanuela; Gori, Stefano; Stramondo, Salvatore

doi:10.3301/ROL.2015.50

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In this paper, we have investigated the capability of Differential Interferometry Synthetic Aperture Radar (DInSAR) technique to detect the ground effects induced by liquefaction phenomena occurred during the May 20, 2012 Emilia earthquake. To this aim, a set of COSMO-SkyMed (CSK) SAR images covering the coseismic phase has been used. The detected surface effects have been related to liquefaction of deep sandy layers. Thanks to the geological/geotechnical data in the area and a liquefaction susceptibility analysis of the subsoil, it has been identified a sandy layer between 9 and 13 m in deep, which probably liquefied during the earthquake. The estimated vertical displacements due to liquefaction are comparable with the values measured by DInSAR.

Titolo:	Cosesimic liquefaction phenomena from DInSAR after the May 20, 2012 Emilia earthquake
Autori:	ALBANO, Matteo SAROLI, Michele MODONI, Giuseppe Chini, Marco Moro, Marco Bignami, Christian Pulvirenti, Luca Pierdicca, Nazzareno Falcucci, Emanuela Gori, Stefano Stramondo, Salvatore mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2015
Rivista:	RENDICONTI ONLINE DELLA SOCIETÀ GEOLOGICA ITALIANA
Abstract:	In this paper, we have investigated the capability of Differential Interferometry Synthetic Aperture Radar (DInSAR) technique to detect the ground effects induced by liquefaction phenomena occurred during the May 20, 2012 Emilia earthquake. To this aim, a set of COSMO-SkyMed (CSK) SAR images covering the coseismic phase has been used. The detected surface effects have been related to liquefaction of deep sandy layers. Thanks to the geological/geotechnical data in the area and a liquefaction susceptibility analysis of the subsoil, it has been identified a sandy layer between 9 and 13 m in deep, which probably liquefied during the earthquake. The estimated vertical displacements due to liquefaction are comparable with the values measured by DInSAR.
Handle:	http://hdl.handle.net/11580/51330
Appare nelle tipologie:	1.1 Articolo in rivista

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