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Vulnerable settlements to debris flows in Arequipa, Peru: population characteristics, hazard knowledge, risk perception, and disaster risk management

Author

Listed:
  • J.-C. Thouret

    (Université Clermont-Auvergne, Laboratoire Magmas et Volcans, CNRS)

  • M. Taillandier

    (Université Clermont-Auvergne)

  • E. Arapa

    (Instituto Geofísico del Perú)

  • E. Wavelet

    (Otago University)

Abstract

Approximately, 75,000 people live in areas prone to volcanic hazards and floods in the large city of Arequipa, Peru. We have conducted three different surveys involving c. 280 respondents to appraise the socio-economic characteristics of urban dwellers living in informal settlements along two ravines, the extent to which they know hazards, perceive risk, and how they behave in case of disaster. This study also assesses how local communities consider, and civil authorities implement mitigation procedures in the city. The statistical analysis of the survey datasets included univariate, bivariate, and multivariate techniques together with hierarchical agglomerative clustering. Low-income urban dwellers, with a minimum or without education, represent almost 32% of the vulnerable population living in four districts. Almost 45% of the respondents have a regular to minimum knowledge of hazards, and half of the population is worried or uncertain about volcano and debris flow threats. A large proportion of dwellers trust early warning messages, but almost half of them check them out before evacuating. Overall, between a third and half of people living in the four most exposed districts of Arequipa seem to be quite vulnerable in case of an imminent debris flow. Interviews and focus groups with risk managers aimed to understand why planning emergency operations and risk mitigation are not as efficient as the municipality, and the communities would expect in Arequipa. Several issues hinder an adequate disaster risk management, as the underlying vulnerability factors of the exposed population are not accounted for. Under-investment in disaster risk management has led to diminish accountability among the risk managers and involvement of dwellers.

Suggested Citation

  • J.-C. Thouret & M. Taillandier & E. Arapa & E. Wavelet, 2024. "Vulnerable settlements to debris flows in Arequipa, Peru: population characteristics, hazard knowledge, risk perception, and disaster risk management," 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. 120(1), pages 901-955, January.
  • Handle: RePEc:spr:nathaz:v:120:y:2024:i:1:d:10.1007_s11069-023-06167-8
    DOI: 10.1007/s11069-023-06167-8
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    References listed on IDEAS

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    1. Charvériat, Céline, 2000. "Natural Disasters in Latin America and the Caribbean: An Overview of Risk," IDB Publications (Working Papers) 1804, Inter-American Development Bank.
    2. Stefan Greiving & Leonie Schödl & Karl-Heinz Gaudry & Iris Katherine Quintana Miralles & Benjamín Prado Larraín & Mark Fleischhauer & Myriam Margoth Jácome Guerra & Jonathan Tobar, 2021. "Multi-Risk Assessment and Management—A Comparative Study of the Current State of Affairs in Chile and Ecuador," Sustainability, MDPI, vol. 13(3), pages 1-23, January.
    3. Baltar, Fabiola & Brunet Icart, Ignasi, 2012. "Social research 2.0: virtual snowball sampling method using Facebook," Nülan. Deposited Documents 1875, Universidad Nacional de Mar del Plata, Facultad de Ciencias Económicas y Sociales, Centro de Documentación.
    4. Céline Charvériat, 2000. "Natural Disasters in Latin America and the Caribbean: An Overview of Risk," IDB Publications (Working Papers) 6793, Inter-American Development Bank.
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