Publicaciones

Assessment of social perception on the contribution of hard-infrastructure for tsunami mitigation to coastal community resilience after the 2010 tsunami: Greater Concepcion area, Chile

Investigadores

Rafael Aránguiz

Journal

International Journal of Disaster Risk Reduction

Institución

Universidad Católica de la Santísima Concepción

Disciplina

Ingeniería Civil

afiliacion

  1. Yu Ting Joanne Khew, Graduate Program in Sustainability Science, Graduate School of Frontier Sciences, The University of Tokyo, Room 334, Building of Environmental Studies, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8563, Japan
  2. Marcin Pawel Jarzebski, Graduate Program in Sustainability Science, Graduate School of Frontier Sciences, The University of Tokyo, Room 334, Building of Environmental Studies, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8563, Japan
  3. Fatma Dyaha, Graduate Program in Sustainability Science, Graduate School of Frontier Sciences, The University of Tokyo, Room 334, Building of Environmental Studies, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8563, Japan
  4. RicardoSan Carlos, Graduate Program in Sustainability Science, Graduate School of Frontier Sciences, The University of Tokyo, Room 334, Building of Environmental Studies, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8563, Japan
  5. Jianping Gu, Graduate Program in Sustainability Science, Graduate School of Frontier Sciences, The University of Tokyo, Room 334, Building of Environmental Studies, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8563, Japan
  6. Miguel Esteban, Graduate Program in Sustainability Science, Graduate School of Frontier Sciences, The University of Tokyo, Room 334, Building of Environmental Studies, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8563, Japan
  7. Rafael Aránguiz, Department of Civil Engineering, Universidad Catolica de la Ssma Concepcion and National Research Center for Integrated Natural Disaster Management CONICYT/FONDAP/15110017, 1.11 Facultad de Ingeniería, Alonso de Ribera 2850, Concepcion, Chile
  8. Tomohiro Akiyama, Graduate Program in Sustainability Science, Graduate School of Frontier Sciences, The University of Tokyo, Room 334, Building of Environmental Studies, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8563, Japan

Abstract

A GIS analysis on the urbanization spread (1725 to present) in the Greater Concepcion Region demonstrates that increasing the tsunami disaster resilience of coastal communities is a pressing issue in Chile, due to the continuous presence of human settlements in tsunami-prone areas. This research assesses the contribution of “hard-infrastructure” for increasing disaster resilience within five coastal towns (Dichato, Coliumo, Tumbes, Penco and Talcahuano). Structures were considered beneficial to resilience-building if they had multi-functional properties which aided in the social and/or economic recovery of the affected community. The assessment was carried out through in-depth interviews with local inhabitants until the point of data-saturation. Results reveal that all surveyed coastal towns had hard-infrastructure that was built after 2010, in the form of promenades and elevated housing. The former structures contributed positively to building economic resilience in Dichato, Talchuano and Penco, through the promotion of tourism and small-scale fishing activities. However, the physical design of the elevated houses was found to only facilitate recovery of community economic functions in Tumbes, while causing strain on the social fabric and possibly hindering tsunami evacuation in all other study sites. The mixed contribution of hard-infrastructure to coastal resilience highlights the need for the de-centralization of planning and reconstruction processes for a successful contextualization of the issue.

Keywords

Tsunami, Disaster recovery, Resilience, Social perception, Multifunction, Physical infrastructure, Assessment

Link

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