Coastal Vulnerability at West Pasaman Regency

Abstract

West Pasaman has rich coastal potency. Marine resources and coastal tourism become income source for this regency. Besides the potency, West Pasaman Coast also vulnerable because it lays on tectonic path subduction and bordered with Hindia Ocean that triger abration, earthquake and tsunamis. The combinations of high abration and flat coast with mud and sand make the West Pasaman Coast very vulnerable. Extreme weather and dense population with convensional living in the coastal area create the complexity of coastal problems. Early, The Coastal Vulnerability Index (CVI) is a method to analyze coastal vulnerability based on certain factors i.e ocean hydrodinamics and coastal morphology. But nowadays, to minimize the risk of natural disasters, the CVI has been modified with additional factors. This research aims to analyze the coast vulnerability of West Pasaman Coast using Coastal Vulnerability Index (CVI) method based on GIS. The study use primary and secondary data. The field survey was conducted on April 2019 with purposive sampling method at 6 districts and 10 sites as the observation points. Those districts are Sungai Beremas, Koto Balingka, Sungai Aur, Sasak Ranah Pasisir, Luhak Nan Duo and Kinali. The result shows that Kinali Coast is categorized as high vulnerability (CVI 3.95) and other 5 districts are moderate vulnerability (CVI 2.3-2.9).