Identification of coastal typology: potential resources and hazards

Abstract

Abstract Coastal areas are unique ecosystems because of the potential for abundant natural resources and hazards that can cause losses. Therefore, this study aims to identify the typology and coastal dynamics of Kukup, Ngrawe, Sepanjang, Drini, and Krakal, Indonesia, for analyzing the potential of natural resources and hazards. A rapid-integrated assessment was carried out to identify typology, genesis, and dynamics of coastal areas by conducting field surveys at locations that have been determined by purposive sampling. The results showed that wave erosion coast was formed in Ngrawe, Kukup, Drini, and Krakal. The marine deposition coast was formed in Ngrawe, Kukup, Sepanjang, Drini, and Krakal. Moreover, the coast built by organism can be found in Sepanjang, Drini, and Krakal. In contrast, the structurally shaped coast was formed in the western part of the Krakal. The coastal dynamics begin with geodynamic processes that form structurally shaped coast, hydrodynamics that form marine deposition coast, wave erosion coast, and ecodynamics that form coast built by organism typology. The potential of natural resources consists of fishery potential, agriculture, and natural beauty for tourism objects. In contrast, the potential hazards consist of earthquakes, tsunamis, tidal waves, rockfall, rip currents, topographic changes, and land-use changes. The coastal area management planning recommendations were Spatial Planning Regulation, Early Warning System, Evacuation Route and assembly point (shelter), Digital-based Information Dissemination, and building retrofitting.

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