Mr. I Gede Putu Eka Suryana Profile

I Gede Putu Eka Suryana

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Proceedings Article | 29 January 2024 Paper

The change of coastal typology in Bali Island Karst Region at southern formation

Ida Bagus Arya Yoga Bharata, I Gede Putu Eka Suryana, Dewa Made Atmaja

Proceedings Volume 12977, 1297711 (2024) https://doi.org/10.1117/12.3009635

KEYWORDS: Oceanography, Visualization, Image segmentation, Satellite imaging, Geography, Geographic information systems

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Problems in the coastal area of the karst formation area are highly correlated with uncontrolled tourism development in the southern part of Bali Island over time. To address this issue, identifying coastal typ ology and their change was conducted by comparing and interpreting high-resolution satellite images from November 2012, April 2017, and June 2022, which were georeferenced using GIS tools at the selected research location through purposive sampling. The analysis employed a descriptive qualitative and spatial approach and an environmental approach. The results revealed four coastal typology classes, including primary coast which is land erosion coasts and structurally shaped coasts, and two secondary coastal classes the marine deposition coasts and wave erosion coasts. These coastal typology were observed across three different periods. Changes in coastal typology predominantly occurred at Melasti Beach and Pandawa Beach, which experienced significant influences from anthropogenic and some natural forces due to their geographical location and tourism development pressures resulting in high intensity of accretion and coastal erosion.

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