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Remote Sens. 2015, 7(7), 8610-8630; doi:10.3390/rs70708610

Land subsidence, Ground Fissures and Buried Faults: InSAR Monitoring of Ciudad Guzmán (Jalisco, Mexico)

1
Istituto Nazionale di Geofisica e Vulcanologia, Rome 00143, Italy
2
Dipartimento di Scienze della Terra e dell'Ambiente, Università di Pavia, Pavia 27100, Italy
3
Canada Centre for Mapping and Earth Observation, Natural Resources Canada, Ottawa, ON K1A 0E4, Canada
4
Consiglio Nazionale delle Ricerche, Istituto per la Dinamica dei Processi Ambientali, Milan 20133, Italy
5
Dipartimento di Ingegneria Civile e Meccanica, Università degli Studi di Cassino e del Lazio Meridionale, Via di Biasio, Cassino 03043, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: James Jin-King Liu, Yu-Chang Chan, Richard Gloaguen and Prasad S. Thenkabail
Received: 14 April 2015 / Revised: 8 June 2015 / Accepted: 18 June 2015 / Published: 7 July 2015
(This article belongs to the Special Issue Remote Sensing in Geology)
View Full-Text   |   Download PDF [6465 KB, uploaded 7 July 2015]   |  

Abstract

We study land subsidence processes and the associated ground fissuring, affecting an active graben filled by thick unconsolidated deposits by means of InSAR techniques and fieldwork. On 21 September 2012, Ciudad Guzmán (Jalisco, Mexico) 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 survey showed that fissures alignment is coincident with the escarpments produced on 19 September 1985, when a strong earthquake with magnitude 8.1 struck central Mexico. In order to detect and map the spatio-temporal features of the processes that led to the 2012 ground fissures, we applied InSAR multi-temporal techniques to process ENVISAT-ASAR and RADARSAT-2 satellite SAR images acquired between 2003 and 2012. We detect up to 20 mm/year of subsidence of the northwestern part of Ciudad Guzmán. These incremental movements are consistent with the ground fissures observed in 2012. Based on interferometric results, field data and 2D numerical model, we suggest that ground deformations and fissuring are due to the presence of areal subsidence correlated with variable sediment thickness and differential compaction, partly driven by the exploitation of the aquifers and controlled by the distribution and position of buried faults. View Full-Text
Keywords: InSAR; ground subsidence; buried faults; ground fissuring InSAR; ground subsidence; buried faults; ground fissuring
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Brunori, C.A.; Bignami, C.; Albano, M.; Zucca, F.; Samsonov, S.; Groppelli, G.; Norini, G.; Saroli, M.; Stramondo, S. Land subsidence, Ground Fissures and Buried Faults: InSAR Monitoring of Ciudad Guzmán (Jalisco, Mexico). Remote Sens. 2015, 7, 8610-8630.

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