Using SAR Intensity and Coherence to Detect a Moorland Wildfire Scar in the Peak District.

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The aim of this paper is to assess the ability of SAR intensity and coherence to detect a moorland wildfire scar in the Peak District National Park (PDNP) in the UK. Spatially-robust data to monitor wildfire scar size and severity in UK moorlands is currently rare. Information on fire extent and rate of recovery of vegetation would be useful for conservation organisations. Knowing the size and location of fire scars would help the Fire and Rescue Service to plan future response to moorland fires. Fire scar boundaries can be mapped in the field using Global Positioning Systems (GPS), but this is labour intensive and not part of the Fire Service operational procedure. An alternative approach to monitoring fire scars in the landscape is required. This paper presents SAR intensity and coherence results for the 18th April 2003 Bleaklow fire scar (7km2) in the PDNP. Time series of ERS-2 and ASAR (C-band) images for several months before and after the fire were pre-processed using SARscape 4.2 to produce geocoded greyscale images. The intensity and coherence values have been qualitatively related to precipitation and CORINE land cover classes. Four Interferometric (InSAR) pairs of ERS-2 data were processed to generate coherence images for the Bleaklow study site (one pair prior to the fire; one pair before and after the fire and two pairs post-fire). The InSAR pairs were used to investigate the temporal trend in coherence for CORINE land cover classes inside the fire scar and outside the fire scar.
Original languageEnglish
Title of host publicationEarth Observation in a Changing World
Publication statusPublished - Sept 2011
EventEarth Observation in a Changing World -
Duration: 1 Jan 182415 Sept 2011


ConferenceEarth Observation in a Changing World


  • Coherence
  • Intensity
  • InSAR
  • Moorland
  • Precipitation
  • Peak District
  • Fire Scar


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