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Combining pre-event optical and post-event polarimetric SAR data for rapid landslide mapping

Plank, Simon and Martinis, Sandro and Twele, André (2016) Combining pre-event optical and post-event polarimetric SAR data for rapid landslide mapping. TerraSAR-X / TanDEM-X science team meeting 2016, 17.-20. Okt. 2016, Oberpfaffenhofen, Deutschland.

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Fast crisis response, i.e., the support of rescue and humanitarian operations, requires quick information about the extent of the affected area and type and grade of damage. Most synthetic aperture radar (SAR) data-based landslide detection approaches reported in the literature use change detection techniques, requiring very high resolution (VHR) SAR imagery acquired shortly before the landslide event. However, such pre-event data is commonly not available. Modern VHR SAR missions, e.g., TerraSAR-X, Radarsat-2 or COSMO-SkyMed, do not systematically cover the entire world, due to limitations in onboard disk space and downlink transmission rates. Therefore, this paper presents a fast and transferable methodology for rapid landslide mapping, based on change detection between pre-event optical imagery and the polarimetric entropy derived from post-event VHR polarimetric SAR data. Pre-event information is derived from high resolution optical imagery of Sentinel-2 or Landsat-8, which are freely available and systematically acquired over the entire Earth’s landmass. The results of the landslide mapping are refined by slope information from a digital elevation model generated from bi-static TanDEM-X imagery. The application of the methodology is demonstrated at two case studies: A mining waste earthflow near Bolshaya Talda, Russia and a rotational slide near Charleston, West Virginia, USA.

Item URL in elib:https://elib.dlr.de/107605/
Document Type:Conference or Workshop Item (Poster)
Title:Combining pre-event optical and post-event polarimetric SAR data for rapid landslide mapping
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Plank, Simonsimon.plank (at) dlr.deUNSPECIFIED
Martinis, Sandrosandro.martinis (at) dlr.deUNSPECIFIED
Twele, Andréandre.twele (at) dlr.deUNSPECIFIED
Date:18 October 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:p. 1
Keywords:landslide; change detection; SAR polarimetry; object-based image analysis; TanDEM-X
Event Title:TerraSAR-X / TanDEM-X science team meeting 2016
Event Location:Oberpfaffenhofen, Deutschland
Event Type:international Conference
Event Dates:17.-20. Okt. 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
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:23 Nov 2016 12:40
Last Modified:23 Nov 2016 12:40

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