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Feasibility Assessment of Landslide Monitoring by Means of SAR Interferometry: A Case Study in the Ötztal Alps, Austria

Plank, Simon and Michael, Krautblatter and Thuro, Kurosch (2015) Feasibility Assessment of Landslide Monitoring by Means of SAR Interferometry: A Case Study in the Ötztal Alps, Austria. In: Engineering Geology for Society and Territory - Volume 2, 2, pp. 375-378. Springer. IAEG XII Congress, 15.-19. Sept. 2014, Turin, Italien. ISBN 978-3-319-09056-6

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Official URL: http://www.springer.com/earth+sciences+and+geography/environmental+science+%26+engineering/book/978-3-319-09056-6

Abstract

Permafrost is degrading in high alpine areas, presumably due to global warming. This causes instabilities of slopes in mountainous areas. Differential synthetic aperture radar interferometry (D-InSAR) is a promising remote sensing technique which enables accuracies of millimeters for landslide monitoring over large areas. However, the following factors complicate its application. The specific imaging geometry of radar systems causes several distortions in SAR images of areas with topographic relief (shadowing and layover of radar responses). These effects deteriorate the application of InSAR. Advanced D-InSAR techniques, such as the persistent scatterer interferometry (PSI) require a stack of at least 15–50 SAR images. This makes its processing very time-consuming and expensive. Precondition of successful PSI application is a high enough number of persistent scatterers (PS) at which the deformation of the ground is analyzed. Here, exemplified for a case study in the Ötztal Alps, Austria, we present the application of lowcost methods enabling objective pre-survey suitability evaluation of D-InSAR—prior to recording of the area of interest (AOI). This feasibility assessment includes (a) the simulation of layover and shadowing areas (to determine the best suited imaging geometry to monitor a certain landslide) and (b) the estimation of PS based on freely available geodata (to test the applicability of PSI).

Item URL in elib:https://elib.dlr.de/90845/
Document Type:Conference or Workshop Item (Poster)
Title:Feasibility Assessment of Landslide Monitoring by Means of SAR Interferometry: A Case Study in the Ötztal Alps, Austria
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Plank, Simonsimon.plank (at) dlr.deUNSPECIFIED
Michael, Krautblatterm.krautblatter (at) tum.deUNSPECIFIED
Thuro, Kuroschthuro (at) tum.deUNSPECIFIED
Date:2015
Journal or Publication Title:Engineering Geology for Society and Territory - Volume 2
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:2
Page Range:pp. 375-378
Editors:
EditorsEmail
Lollino, G.UNSPECIFIED
Giordan, D.UNSPECIFIED
Crosta, G.UNSPECIFIED
Corominas, J.UNSPECIFIED
Azzam, R.UNSPECIFIED
Wasowski, J.UNSPECIFIED
Sciarra, N.UNSPECIFIED
Publisher:Springer
ISBN:978-3-319-09056-6
Status:Published
Keywords:Landslide monitoring, Remote sensing, D-InSAR, PSI, Feasibility assessment
Event Title:IAEG XII Congress
Event Location:Turin, Italien
Event Type:international Conference
Event Dates:15.-19. Sept. 2014
Organizer:IAEG community
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:21 Nov 2014 10:01
Last Modified:21 Nov 2014 10:11

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