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Article

Ground Deformations Controlled by Hidden Faults: Multi-Frequency and Multitemporal InSAR Techniques for Urban Hazard Monitoring

1
Dipartimento di Ingegneria dell’Informazione, Elettronica e Telecomunicazioni (DIET), La Sapienza University of Rome, 00184 Rome, Italy
2
Istituto Nazionale di Geofisica e Vulcanologia, 00143 Roma, Italy
*
Author to whom correspondence should be addressed.
Remote Sens. 2019, 11(19), 2246; https://doi.org/10.3390/rs11192246
Received: 8 August 2019 / Revised: 19 September 2019 / Accepted: 23 September 2019 / Published: 26 September 2019
This work focuses on the study of land subsidence processes by means of multi-temporal and multi-frequency InSAR techniques. Specifically, we retrieve the long-term evolution (2003–2018) of the creeping phenomenon producing ground fissuring in the Ciudad Guzmán (Jalisco state, Mexico) urban area. The city is located on the northern side of the Volcan de Colima area, one of the most active Mexican volcanoes. On September 21 2012, Ciudad Guzmán was struck by ground fissures of about 1.5 km of length, causing the deformation of the roads and the propagation of fissures in adjacent buildings. The field surveys showed that fissures follow the escarpments produced during the central Mexico September 19 1985 Mw 8.1 earthquake. We extended the SAR (Synthetic Aperture Radar) interferometric monitoring starting with the multi-temporal analysis of ENVISAT and COSMO-SkyMed datasets, allowing the monitoring of the observed subsidence phenomena affecting the Mexican city. We processed a new stack of Sentinel-1 TOPSAR acquisition mode images along both descending and ascending paths and spanning the 2016–2018 temporal period. The resulting long-term trend observed by satellites, together with data from volcanic bulletin and in situ surveys, seems to suggest that the subsidence is due to the exploitation of the aquifers and that the spatial arrangement of ground deformation is controlled by the position of buried faults. View Full-Text
Keywords: subsidence; multi-temporal analysis; PS; SBAS; InSAR; urban monitoring; buried faults subsidence; multi-temporal analysis; PS; SBAS; InSAR; urban monitoring; buried faults
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MDPI and ACS Style

Murgia, F.; Bignami, C.; Brunori, C.A.; Tolomei, C.; Pizzimenti, L. Ground Deformations Controlled by Hidden Faults: Multi-Frequency and Multitemporal InSAR Techniques for Urban Hazard Monitoring. Remote Sens. 2019, 11, 2246. https://doi.org/10.3390/rs11192246

AMA Style

Murgia F, Bignami C, Brunori CA, Tolomei C, Pizzimenti L. Ground Deformations Controlled by Hidden Faults: Multi-Frequency and Multitemporal InSAR Techniques for Urban Hazard Monitoring. Remote Sensing. 2019; 11(19):2246. https://doi.org/10.3390/rs11192246

Chicago/Turabian Style

Murgia, Federica, Christian Bignami, Carlo A. Brunori, Cristiano Tolomei, and Luca Pizzimenti. 2019. "Ground Deformations Controlled by Hidden Faults: Multi-Frequency and Multitemporal InSAR Techniques for Urban Hazard Monitoring" Remote Sensing 11, no. 19: 2246. https://doi.org/10.3390/rs11192246

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