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Full-polarimetric burn scar mapping - the differences of active fire and post-fire situations

Plank, Simon and Karg, Susanne and Martinis, Sandro (2018) Full-polarimetric burn scar mapping - the differences of active fire and post-fire situations. International Journal of Remote Sensing, 40 (1), pp. 253-268. Taylor & Francis. doi: 10.1080/01431161.2018.1512768. ISSN 0143-1161.

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Official URL: https://www.tandfonline.com/doi/full/10.1080/01431161.2018.1512768


Fire is a threat to human lives, infrastructure, and forestry. Satellite-based Earth observations enable a fast, efficient, and reliable estimation of burnt area. In most cases, optical satellite data are used for burn scar detection. However, smoke and cloud coverage strongly limits the suitability of optical imagery for rapid mapping of burn scars. Here, an automated procedure based on quad-polarized L-band Synthetic Aperture Radar (SAR) data is presented to enable fast burn scar mapping independently of the weather and smoke conditions. Full-polarimetric SAR data enable the decomposition of the SAR backscatter into different scattering mechanisms, describing the scatterer more precisely. Important differences in the polarimetric backscattering behaviour during the active fire and post-fire situations are reported. While the SPAN difference is best suited for burn scar mapping during active fire situations, the Entropy-Anisotropy-Alpha and the generalized Freeman-Durden decompositions showed the best suitability for burnt area mapping several months after the end of the fire. The proposed methodology is an object-based image analysis approach based on change detection. The big fire event which affected Fort McMurray, Alberta, Canada, in May-June 2016 was investigated as a case study.

Item URL in elib:https://elib.dlr.de/121477/
Document Type:Article
Title:Full-polarimetric burn scar mapping - the differences of active fire and post-fire situations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Plank, Simonsimon.plank (at) dlr.deUNSPECIFIED
Karg, Susannesusanne.karg (at) dlr.deUNSPECIFIED
Martinis, Sandrosandro.martinis (at) dlr.deUNSPECIFIED
Journal or Publication Title:International Journal of Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1080/01431161.2018.1512768
Page Range:pp. 253-268
Publisher:Taylor & Francis
Keywords:ALOS-2; Polarimetric SAR; burned area; change detection
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 - Remote Sensing and Geo Research
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Geo Risks and Civil Security
Deposited By: Plank, Simon Manuel
Deposited On:10 Sep 2018 10:23
Last Modified:19 Feb 2019 13:30

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