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http://dx.doi.org/10.9765/KSCOE.2021.33.6.246

The Analysis of Coastal Erosion and Erosion Impact Assessment in the East Coast  

Park, Seon Jung (Hyein E&C Technical Research Institute)
Seo, Heui Jung (Hyein E&C Technical Research Institute)
Park, Seung Min (Hyein E&C Technical Research Institute)
Park, Seol Hwa (Hyein E&C Technical Research Institute)
Ahn, Ike Jang (Hyein E&C)
Seo, Gyeong Sik (Hyein E&C Technical Research Institute)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.33, no.6, 2021 , pp. 246-256 More about this Journal
Abstract
Various development projects occurring on the coast cause an imbalance of surface sediments, causing coastal disasters or irreversible coastal erosion. Coastal erosion caused by the influence of various port structures built through coastal development can be directly identified by evaluating changes in the sediment budget, longshore sediment, and cross-shore sediment. In other words, it will be possible to evaluate the causality between coastal development and coastal erosion by classifying regions due to single cause and regions due to multiple causes according to the changes in the sediment classified into the three types mentioned above. In this study, the cause of long-term and continuous erosion was analyzed based on the analysis results of the coastal development history and the Coastal Erosion Monitoring targeting the coast of Gangwon-do and Gyeongsangbuk-do on the east coast. In addition, in order to evaluate the degree of erosion caused by the construction of artificial coastal structures, the concept of erosion impact assessment was established, three methods were proposed for the impact assessment. The erosion impact of Hajeo port was assessed using the results of satellite image analysis presented in the Coastal Erosion Monitoring Report, it was assessed that the development of Hajeo port had an impact of 93.4% on erosion, and that of the coastal road construction had an impact of 6.6%.
Keywords
coastal erosion; coastal development; sediment budget; longshore sediment; cross-shore sediment; erosion impact assessment;
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