Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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Characteristics of Sediment Transport under External Force in Haeundae Beach

해운대 해빈에서 특정 외력하의 표사이동 특성

  • Received : 2013.07.11
  • Accepted : 2013.11.11
  • Published : 2013.12.31
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Abstract

The width of Haeundae beach has been decreasing annually due to the loss of sand from land, high waves, reflected waves, etc.. The accurate prediction of wave-induced currents is indispensible to analyze the beach deformation due to the sediment transport. In the this study, Numerical experiments were performed with seasonal representative wave on the basis of a long term and comprehensive survey data. In summer, we found the deposition of Mipo by longshore current eastly by ordinary and S waves, and in winter, the deposition of Dongback-island by longshore current westly by ordinary and E waves. In addition, rip current occurs in the middle of Haeundae beach by 50 year return period wave and current westly along the coast by ESE directional wave.

해운대 해수욕장은 육지로부터 유입되는 모래 공급원의 감소와 고파랑 및 반사파 등의 영향으로 백사장의 폭이 매년 감소하는 것으로 나타났다. 표사이동에 따른 해빈변형 문제를 해결하기 위해서는 해빈류의 특성을 예측할 필요가 있다. 본 연구에서는 해운대 해수욕장에 대한 장기적이고 종합적인 관측자료를 바탕으로, 계절별 대표파랑과 이상파에 대한 해빈류 및 표사이동 수치실험을 실시하였다. 여름에는 평상파 및 S계열 파랑에 의해서 해빈류는 연안을 따라 동쪽으로 흘러 미포측에서 퇴적되는 양상을 보이고, 겨울에는 평상파 및 E 계열의 파랑에 의해 해빈류는 서향하여 동백섬 인근에서 퇴적양상을 보이고 있다. 50년빈도 고파랑 내습시 SSW 파랑은 해운대 중앙에서 이안류가 발생하고, ESE 파랑은 미포측에서 연안을 따라 서측으로 흐름을 발생시키는 것으로 나타났다.

Keywords

References

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  1. Numerical Simulation of Winter Waves and Currents in the Haeundae Coast using 2DH Model vol.28, pp.6, 2016, https://doi.org/10.9765/KSCOE.2016.28.6.350
  2. Field Observations of Spatial Structure of Hydrodynamics Including Waves and Currents in the Haeundae Coast vol.27, pp.4, 2015, https://doi.org/10.9765/KSCOE.2015.27.4.228
  3. Wave-induced Currents using XBEACH Model after Beach Nourishment at Haeundae Beach vol.30, pp.6, 2016, https://doi.org/10.5574/KSOE.2016.30.6.498