Analysis of Abrasion in Coastal Areas of North Bengkulu Beach as Learning Material for Disaster Mitigation
Abstract
The threat of disasters that often occur in coastal areas is seawater abrasion. One of the provinces in Indonesia which is located in the coastal region is Bengkulu with the area most prone to abrasion disaster is the North Bengkulu Regency. This study aims to describe the potential for abrasion in the North Bengkulu region based on the parameters of abrasion vulnerability. The research method used is a qualitative descriptive method with literature studies. An abrasion potential analysis has been carried out based on the measurement of three parameters of abrasion susceptibility namely coastal morphology, soil structure and wave height. The results showed that the coastal morphology in the area of North Bengkulu Regency was strongly influenced by tectonic processes that occur due to subduction zone pressure. Coastal morphology in the form of steep cliffs, piles (stack), while on steep cliffs also formed beach caves. The soil structure on a coastal cliff shows that the dominant cliff is composed of sandstones, gravel, clay and alluvium. The difference in vertical rock resistance results in the beach being prone to abrasion. The wave height (swash) in the North Bengkulu regency is an average of 60 cm, although at certain locations the swash height reaches 85 cm. Thus, it can be concluded that the area of North Bengkulu regency is very potential for abrasion and efforts are needed to reduce it, one of the ways through disaster mitigation education.
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References
Hasanudin, M., Kusmanto, E. (2018). Beach Abrasion and Sedimentation in the Coastal Area of Bengkulu City. Oceanology and Limnology in Indonesia 2018, 3 (3): 245-252.
Kusdji. (2014). Geological Map Results of Interpretation of Far Lais Bengkulu. Bandung: Geological Survey Center, Geology Agency.
Morton, RA. (2004). An Overview of Coastal Land Loss with Emphasis on the Southeastern United Stated. US Geological Survey, Center for Coastal and Watershed Studies (pp. 03-337). St. Petersburg.
Nofirman, (2017). Changes in Coastal Morphology with Image Integration in North Bengkulu Regency, Georafflesia Journal, Vol: 2, No: 2, December 2017: 42-60.
Refrizon, Sugianto, N., Bernard, A. (2019). Determination of Shear Wave Speed Stratigraphy (VS) in Abrasion-Prone Areas in North Bengkulu Regency using the Multichannel Analysis of Surface Wave (MASW) Method, Journal of Meteorology, Climatology and Geophysics, Vol. 6 No. 2, July 2019: 15-20.
Setiawan, W.B. (2017). Berebing Beach in North Bengkulu: Erosion Problems and Suggestions to Overcome It. Proceedings of the Seminar, September 7, 2017: 182-190.
Sidarto. (2014). Geological Map Results of Interpretation of the Remote Senses of Bengkulu. Bandung: Geological Survey Center, Geology Agency.
Supiyati, Bakhtiar, D., Fatimah, S. (2016). Sediment transport caused by the Longshore Current in the Coast District of Teluk Segara Bengkulu City. Proceedings of the Seminar, Vol: 2, No: 2, December 2017: 11-16.
Suwarsono, Supiyati, Suwardi. (2011). Zoning Characteristics of Abrasion Speed and Design of Handling Techniques in the West Bengkulu North Cross Road as Vital, Makara, Technology Transportation Vol. 15, No. 1, April 2011: 31-38.
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