Abstract
This study evaluates erosion vulnerability in the Peruvian coastline under a sea-level rise scenario in a Climate Change context. For this purpose, a Coastal Vulnerability Index - CVI was developed, which integrates physical variables (geomorphology, beach type, beach slope, and shoreline changes) and human-related variables (land use, beach width, and coastal settlement). The CVI was used to analyze the coastline of the Pacasmayo province (La Libertad region, Peru), with data obtained from field surveys and remoting sensing, on a geographic information system (GIS). The study found that 5.8% of the coastline showed a low vulnerability, 82.9% medium vulnerability, and 11.3% high vulnerability. When considering physical variables solely, high vulnerability increases considerably (32%). Whereas, if only human-related variables are taken into account, high vulnerability decreases (7.4%).
Highlights
A This study evaluates erosion vulnerability in the Peruvian coastline under a sea-level rise scenario in a Climate Change context
The CVI was used to analyze the coastline of the Pacasmayo province (La Libertad region, Peru), with data obtained from field surveys and remoting sensing, on a geographic information system (GIS)
The study found that 5.8% of the coastline showed a low vulnerability, 82.9% medium vulnerability, and 11.3% high vulnerability
Summary
La provincia de Pacasmayo se encuentra ubicada en la región La Libertad, en el norte del Perú. Teves (1982) señala que los sedimentos litorales constituyen playas continuas casi a todo lo largo de la provincia, las arenas de color gris claro predominan en la mayor parte de la línea de costa y solo se ven interrumpidas por cordones litorales de cantos rodados o la presencia de acantilados «vivos», como al norte de la desembocadura del Jequetepeque y en el sector comprendido entre Pacasmayo y el balneario El Milagro. Respecto de la variable «geología-geomorfología», las categorías fueron definidas mediante el trabajo de campo realizado (recorrido a lo largo del borde costero de la provincia) y mapas geológicos a escala provincial, lo que permitió identificar geoformas locales como los acantilados «muertos» y «vivos», llanuras fluvio-marinas o dunas litorales, playas de bolsillo, etc. Matriz de variables físicas y antrópicas utilizadas para el área de estudio
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