CRET Method: A Proposal to Incorporate Concatenated Risk Areas by Earthquake-Tsunami into Chilean Territorial Planning

Authors

  • Simón Inzunza Centro de Investigación para la Gestión Integrada del Riesgo de Desastres (CIGIDEN), Santiago, Chile.
  • Carolina Martínez Centro de Investigación para la Gestión Integrada del Riesgo de Desastres (CIGIDEN), Santiago, Chile.

DOI:

https://doi.org/10.7764/EURE.51.152.07

Keywords:

natural risks, territorial planning, vulnerability

Abstract

Due to the absence of a methodological approach to quantify concatenated risk by earthquake-tsunami in Chile, CRET (Concatenated Risk by Earthquake-Tsunami) is a proposal to estimate, using Geographic Information Systems, publicly available data and surveys, the impacts of a tsunami following an earthquake, as input for the incorporation of risk areas into Territorial Planning Instruments (TPI). CRET was applied in the locality of San Sebastián, municipality of Cartagena, Chile. It was found that 43 census blocks were exposed to concatenated risk in a scenario similar to that of the 1730 earthquake, of which 5 had low risk (11.6%), 13 resulted in medium risk (30.3%), and 25 reached high risk (58.1%). By establishing three levels of risk and through a prospective risk management approach, provisions were created for the adaptability of exposed elements, requirements were set for new land uses, and guidelines were provided for a comprehensive risk reduction plan.

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Published

2024-08-19

How to Cite

Inzunza, S., & Martínez, C. (2024). CRET Method: A Proposal to Incorporate Concatenated Risk Areas by Earthquake-Tsunami into Chilean Territorial Planning. Revista EURE - Revista De Estudios Urbano Regionales, 51(152), 1–33. https://doi.org/10.7764/EURE.51.152.07

Issue

Vol. 51 No. 152 (2025)

Section

Articles

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