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Characteristics of Erosion Variation at Haeundae Beach due to Multiple Typhoons (복수의 태풍내습에 의한 해운대 해수욕장 침식변화특성)

Kang, Tae-Soon;Lee, Jong-Sup;Kim, Jong-Beom;Kim, Jong-Kyu
- Journal of the Korean Society of Marine Environment & Safety
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- v.25 no.7
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- pp.920-926
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- 2019
In this study, we analyzed the erosion variation of beach area at Haeundae Beach after coastal improvement project using video monitoring system operated by the Coastal Erosion Monitoring (Ministry of Oceans and Fisheries). Haeundae Beach was well maintained and stabilized following large scale nourishment through coastal improvement project despite of seasonal fluctuations. However, multiple typhoons over the last two years caused beach stabilization patterns and seasonal fluctuations to lost equilibrium, resulting in rapid erosion. In particular, the sandy beach was eroded by typhoon Solic and Kongray in 2018 and failed to recover beach area in winter by seasonal fluctuations. And due to multiple typhoons in 2019, the beach area was reduced 9.5 % (12,607 ㎡) year-on-year. According to analyze the observed wave and beach area data in Haeundae, the tendency of erosion and sedimentation was influenced by seasonal incident wave direction for each section(west, center and east part). Therefore, to identify the causes of decreasing seasonal fluctuation characteristics and continuous erosion, hereafter, more precise monitoring of different factors are needed, such as the crest heights of submerged breakwater and its loss of function, and sand leakage to the outside around submerged breakwater.
https://doi.org/10.7837/kosomes.2019.25.7.920 인용 PDF KSCI