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Post-failure evolution analysis of a rainfall-triggered landslide by Multi-Temporal Interferometry SAR approaches integrated with geotechnical analysis

Confuorto, Pierluigi and Di Martire, Diego and Centolanza, Giuseppe and Iglesias, Ruben and Mallorqui, Jordi J. and Novellino, Alessandro and Plank, Simon and Ramondini, M. and Thuro, Kurosch and Calcaterra, D. (2017) Post-failure evolution analysis of a rainfall-triggered landslide by Multi-Temporal Interferometry SAR approaches integrated with geotechnical analysis. Remote Sensing of Environment, 188, pp. 51-72. Elsevier. DOI: http://dx.doi.org/10.1016/j.rse.2016.11.002 ISSN 0034-4257

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Official URL: http://www.sciencedirect.com/science/article/pii/S0034425716304345

Abstract

Persistent Scatterers Interferometry (PSI) represents one of the most powerful techniques for Earth’s surface deformation processes’ monitoring, especially for long-term evolution phenomena. In this work, a dataset of 34 TerraSAR-X StripMap images (October 2013-October 2014) have been processed by two PSI techniques - Coherent Pixel Technique-Temporal Sublook Coherence (CPT-TSC) and Small Baseline Subset (SBAS) - in order to study the evolution of a slow-moving landslide which occurred on February 23, 2012 in the Papanice hamlet (Crotone municipality, southern Italy) and induced by a significant rainfall event (185 mm in three days). The mass movement caused structural damage (buildings’ collapse), and destruction of utility lines (gas, water and electricity) and roads. In The results showed analogous displacement rates (30-40 mm/yr along the Line of Sight –LOS - of the satellite) with 41 respect to the pre-failure phase (2008-2010) analyzed in previous works. 42 Both approaches allowed to detect the landslide-affected area, however the higher density of targets identified by 43 means of CPT-TSC enabled to analyze in detail the slope behavior in order to design possible mitigation interventions. 44 For this aim, a slope stability analysis has been carried out, considering the comparison between groundwater 45 oscillations and time-series of displacement. Hence, the crucial role of the interaction between rainfall and 46 groundwater level has been inferred for the landslide triggering. In conclusion, we showed that the integration of 47 geotechnical and remote sensing approaches can be seen as a best practice to support stakeholders to design remedial 48 works.

Item URL in elib:https://elib.dlr.de/107537/
Document Type:Article
Title:Post-failure evolution analysis of a rainfall-triggered landslide by Multi-Temporal Interferometry SAR approaches integrated with geotechnical analysis
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Confuorto, Pierluigipierluigi.confuorto (at) unina.itUNSPECIFIED
Di Martire, DiegoDepartment of Earth, Environment and Resources Sciences. Federico II University of Naples, ItalyUNSPECIFIED
Centolanza, GiuseppeUniversitat Politecnica de CatalunyaUNSPECIFIED
Iglesias, RubenUniversitat Politècnica de CatalunyaUNSPECIFIED
Mallorqui, Jordi J.Universitat Politecnica de CatalunyaUNSPECIFIED
Novellino, AlessandroDepartment of Earth, Environment and Resources Sciences. Federico II University of Naples, ItalyUNSPECIFIED
Plank, Simonsimon.plank (at) dlr.deUNSPECIFIED
Ramondini, M.Federico II University of Napoli (Italy)UNSPECIFIED
Thuro, Kuroschthuro (at) tum.deUNSPECIFIED
Calcaterra, D.Federico II University of Napoli (Italy)UNSPECIFIED
Date:January 2017
Journal or Publication Title:Remote Sensing of Environment
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:188
DOI :http://dx.doi.org/10.1016/j.rse.2016.11.002
Page Range:pp. 51-72
Publisher:Elsevier
ISSN:0034-4257
Status:Published
Keywords:Persistent Scatterers Interferometry; SAR; Coherent Pixels Technique-Temporal Sublook Coherence; Small Baseline Subset; Landslide; Crotone Province; Slope stability analysis
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Zivile Kriseninformation und Georisiken (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Geo Risks and Civil Security
Deposited By: Plank, Simon Manuel
Deposited On:14 Nov 2016 12:51
Last Modified:13 Feb 2017 09:43

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