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Fuzzy set approach to calibrating distributed flood inundation models using remote sensing observations.

Research output: Contribution to journalJournal article

Published

  • Florian Pappenberger
  • Kevin Frodsham
  • Keith J. Beven
  • Renata Romanovicz
  • Patrick Matgen
Journal publication date2007
JournalHydrology and Earth System Sciences
Journal number2
Volume11
Number of pages14
Pages739-752
Original languageEnglish

Abstract

The paper presents a methodology for the estimation of uncertainty of inundation extent, which takes account of the uncertainty in the observed spatially distributed information and implements a fuzzy evaluation methodology. The Generalised Likelihood Uncertainty Estimation (GLUE) technique and the 2-D LISFLOOD-FP model were applied to derive the set of uncertain inundation realisations and resulting flood inundation maps. Conditioning of the inundation maps on fuzzified Synthetic Aperture Radar (SAR) images results in much more realistic inundation risk maps which can better depict the variable pattern of inundation extent than previously used methods. It has been shown that the evaluation methodology compares well to traditional approaches and can produce flood hazard maps that reflect the uncertainties in model evaluation.