한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제62권2호
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  • Pages.75-82
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  • 2020
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  • 1738-3692(pISSN)
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  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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인공구조물에 의한 대항리 갯벌의 장기 지형변화

Effect of Artificial Structures on the Long-Term Topographic Changes at Daehang-ri Intertidal Flat, the West Coast of Korea

  • Choi, Tae-Jin (Department of Oceanography, Kunsan National University) ;
  • Jeong, Eui-Young (Korea Institute of Ocean Science & Technology) ;
  • Yang, Young Jin (Korea Rural Community Corporation, Rural Research Institute) ;
  • Choi, Jin-Yong (Department of Ocean Science and Engineering, Kunsan National University)
  • 투고 : 2020.02.03
  • 심사 : 2020.03.18
  • 발행 : 2020.03.31
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초록

The Daehang-ri intertidal flat located the just outside of the Saemangeum dike has been reported to show new-developing flats. Based on the topographic surveys of 21 times from 2000 to 2016 by a leveling method every year, this site clearly shows variation of deposition/erosion in time and space. Deposition has consistently occurred at the rate of +3.75 cm per year at the area along the dike (Zone 1), and this tidal flat is expanding and prograding seaward. In the area of far from the dike (Zone 2), on the other hand, erosion prevails at the rate of -2.38 cm per year, and this zone tends to retreat landward. However, the erosional trend of Zone 2 has slightly slowed down since 2014. As a whole from 2000 to 2016, net deposition is recorded over 3.0 m at the upper beach and the area adjacent to the dike (Zone 1), while erosion up to 1.0 m in Zone 2. In conclusion, the results at the Daehang-ri intertidal flat clearly revealed that its topographic changes were induced by the artificial structures and water masses through its sluice gate. Counter-clockwise gyre newly created after the sea dikes construction probably results in relocating of sediment outside the dike 1 by transportation of materials eroded from the south to the north along the coast.

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참고문헌

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