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Snow avalanche susceptibility of the Circo de Gredos (Iberian Central System, Spain)

Author

Listed:
  • Rodrigo L. Soteres
  • Javier Pedraza
  • Rosa M. Carrasco

Abstract

We present a detailed snow avalanche susceptibility map at scale 1:20,000 of the Circo de Gredos in the Sierra de Gredos (Iberian Central System, Spain). This cirque-shaped landscape is one of the most popular spots for winter sports in the region. However, no snow avalanche activity assessment has been conducted to date. We have, therefore, produced a snow avalanche susceptibility map based on aerial and satellite imagery, newspaper reviews and field work, including avalanche features recognition and interviews with frequent backcountry users. We extracted the spatial distribution of necessary and enhancer factors for triggering slab, wet and loose snow avalanches from a digital elevation model. Finally, calculations to evaluate each snow avalanche type susceptibility were performed using a Geographical Information System. By combining our map collection, we concluded that most of the area in the Circo de Gredos is highly susceptible to snow avalanches, especially slab and wet snow types.

Suggested Citation

  • Rodrigo L. Soteres & Javier Pedraza & Rosa M. Carrasco, 2020. "Snow avalanche susceptibility of the Circo de Gredos (Iberian Central System, Spain)," Journal of Maps, Taylor & Francis Journals, vol. 16(2), pages 155-165, December.
    • Handle: RePEc:taf:tjomxx:v:16:y:2020:i:2:p:155-165
    DOI: 10.1080/17445647.2020.1717655
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