Title
Tsunami hazard assessment for the central and southern pacific coast of Colombia
Date Issued
01 October 2020
Access level
open access
Resource Type
journal article
Author(s)
Escobar R.S.
Diaz L.O.
Guerrero A.M.
Galindo M.P.
Koshimura S.
Adriano B.
Urra L.
Quintero P.
International Research Institute of Disaster Science
Publisher(s)
Taylor & Francis Group
Abstract
Highly  destructive tsunamis occurred near the Pacific coast of Colombia in 1906 and 1979. Recent studies have established asperities within the subduction zone in this area, which can cause megathrust earthquakes triggering highly destructive tsunamis. In this study we assess the tsunami hazard in the main populated areas of Colombia Pacific coast by calculating the inundation depth and the maximum tsunami height from major scenario. A deterministic method is applied using slip deficit models and broadband slip models as tsunami sources. Result suggest that, for the worse-case scenario, the maximum deformation of the seafloor is 6.0 m within the Esmaraldas segment; the maximum height of the tsunami is 4.66 m, 4.34 m and 0.53 m around. Tumaco Island, Morro Island, and Cascajal Island (Buenaventura Bay), respectively. Two to five meters inundation depth were calculated in over 11% and 10% of the total areas of the islands of Tumaco and Morro, respectively. Based on these result, tsunami hazard maps were alaborated and will serve to create tsunami mitigation plans in these areas.
Start page
540
End page
552
Volume
62
Issue
4
Language
English
OCDE Knowledge area
Geociencias, Multidisciplinar
Scopus EID
2-s2.0-85091358114
Source
Coastal Engineering Journal
ISSN of the container
21664250
Sponsor(s)
This study was carried out as part of the SATREPS project entitled “Application of more advanced technologies to strengthen research and response to seismic, volcanic and tsunami events and improve risk management in Colombia”, sponsored by the Japan International Cooperation Agency (JICA) and the Japan Science and Technology Agency (JST). We are grateful to the following institutions for their support: Dirección General Maritima - Centro de Investigaciones Oceanográficas e Hidrográficas del Pacífico (DIMAR - CCCP); the International Research Institute for Disaster Science (IRIDeS) and the Core Research Cluster of Disaster Science at Tohoku University, Japan (a Designated National University); Universidad del Norte - Grupo de Investigación en Geociencias GEO4; the Geoinformatics Unit of the Advanced Intelligence Center Project (RIKEN); the National Research Institute for Earth Sciences and Disaster Prevention (NIED); and the Servician Geológico de Colombia (SGC).
Sources of information: Directorio de Producción Científica Scopus