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Assessment of Debris-Flow Hazards of Alluvial Fans

Author

Listed:
  • Kazuo Okunishi
  • Hiroshi Suwa

Abstract

A strategy is presented for the assessment ofdebris-flow hazards on alluvial fans on the basis ofa case study carried out on the southern foot of astratovolcano named Mt. Yatsugatake. Transformation ofcommercial forests into a golf course was planned ata corner of the Kikkakezawa fan. The case studyinvolves an assessment of hazards due to debris flowsof different magnitudes and their recurrenceintervals. The environmental conditions for therecurrence of these debris flows are discussed as wellas the extent of the areas affected by them. In orderto generalize the case study, concepts of hazardpotential, hazard and risk for debris flows onalluvial fans are established. Accordingly, the hazardpotential is the possible hazards at any location onan alluvial fan in an indefinitely long time period,which can be assessed on the basis of hydrological andother geoscientific investigations. Hazards associatedwith a particular land use can be evaluated on thebasis of the hazard potential considering the locationand the time period associated with the land use. Riskcan be further assessed considering the life styles inthis land and the social conditions. Copyright Kluwer Academic Publishers 2001

Suggested Citation

  • Kazuo Okunishi & Hiroshi Suwa, 2001. "Assessment of Debris-Flow Hazards of Alluvial Fans," 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. 23(2), pages 259-269, March.
    • Handle: RePEc:spr:nathaz:v:23:y:2001:i:2:p:259-269
    DOI: 10.1023/A:1011162516211
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    Citations

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    Cited by:

    1. G. Chevalier & V. Medina & M. Hürlimann & A. Bateman, 2013. "Debris-flow susceptibility analysis using fluvio-morphological parameters and data mining: application to the Central-Eastern Pyrenees," 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. 67(2), pages 213-238, June.
    2. Hector Diaz & Bruno Mazzorana & Bernhard Gems & Ivan Rojas & Nicole Santibañez & Pablo Iribarren & Mario Pino & Andrés Iroumé, 2022. "What do biphasic flow experiments reveal on the variability of exposure on alluvial fans and which implications for risk assessment result from this?," 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. 111(3), pages 3099-3120, April.
    3. He, Songtang & Wang, Daojie & Li, Yong & Fang, Yingchao & Lan, Huijuan & Chen, Wenle, 2019. "Implementation of a landscape ecological use pattern model: Debris flow waste-shoal land use in the Yeyatang Basin, Yunnan Province, China," Land Use Policy, Elsevier, vol. 81(C), pages 483-492.
    4. Songtang He & Daojie Wang & Yong Li & Peng Zhao, 2018. "Land Use Changes and Their Driving Forces in a Debris Flow Active Area of Gansu Province, China," Sustainability, MDPI, vol. 10(8), pages 1-20, August.
    5. He, Songtang & Wang, Daojie & Zhao, Peng & Li, Yong & Lan, Huijuan & Chen, Wenle & Jamali, Ali Akbar, 2020. "A review and prospects of debris flow waste-shoal land use in typical debris flow areas, China," Land Use Policy, Elsevier, vol. 99(C).

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