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Representation of a Post-Fire Flash-Flood Event Combining Meteorological Simulations, Remote Sensing, and Hydraulic Modeling

Author

Listed:
  • Angelos Alamanos

    (Independent Researcher, 10243 Berlin, Germany)

  • George Papaioannou

    (Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, 68200 Orestiada, Greece)

  • George Varlas

    (Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, Anavissos, 19013 Athens, Attiki, Greece)

  • Vassiliki Markogianni

    (Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, Anavissos, 19013 Athens, Attiki, Greece)

  • Anastasios Papadopoulos

    (Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, Anavissos, 19013 Athens, Attiki, Greece)

  • Elias Dimitriou

    (Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, Anavissos, 19013 Athens, Attiki, Greece)

Abstract

Wildfires are an escalating global threat, jeopardizing ecosystems and human activities. Among the repercussions in the ecosystem services of burnt areas, there are altered hydrological processes, which increase the risks of flash floods. There is limited research addressing this issue in a comprehensive way, considering pre- and post-fire conditions to accurately represent flood events. To address this gap, we present a novel approach combining multiple methods and tools for an accurate representation of post-fire floods. The 2019 post-fire flood in Kineta, Central Greece is used as a study example to present our framework. We simulated the meteorological conditions that caused this flood using the atmospheric model WRF-ARW. The burn extent and severity and the flood extent were assessed through remote sensing techniques. The 2D HEC-RAS hydraulic–hydrodynamic model was then applied to represent the flood event, using the rain-on-grid technique. The findings underscore the influence of wildfires on flooding dynamics, highlighting the need for proactive measures to address the increasing risks. The integrated multidisciplinary approach used offers an improved understanding on post-fire flood responses, and also establishes a robust framework, transferable to other similar cases, contributing thus to enhanced flood protection actions in the face of escalating fire-related disasters.

Suggested Citation

  • Angelos Alamanos & George Papaioannou & George Varlas & Vassiliki Markogianni & Anastasios Papadopoulos & Elias Dimitriou, 2023. "Representation of a Post-Fire Flash-Flood Event Combining Meteorological Simulations, Remote Sensing, and Hydraulic Modeling," Land, MDPI, vol. 13(1), pages 1-21, December.
    • Handle: RePEc:gam:jlands:v:13:y:2023:i:1:p:47-:d:1311378
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    References listed on IDEAS

    as
    1. P.-A. Versini & M. Velasco & A. Cabello & D. Sempere-Torres, 2013. "Hydrological impact of forest fires and climate change in a Mediterranean basin," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 66(2), pages 609-628, March.
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