Journal of The Geomorphological Association of Korea (한국지형학회지)

The Geomorphological Association of Korea (한국지형학회)
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Formation and Recent Changes of the Okjukdong Dunefield, Daecheong Island

대청도 옥죽동 사구의 형성과 최근의 변화

  • Choi, Kwang Hee (Measuremant and Analysis Division, Yeongsan River Basin Environmental Office) ;
  • Kong, Hak-Yang (Natural Environment Research Division, National Institute of Environmental Research)
  • 최광희 (영산강유역환경청 측정분석과) ;
  • 공학양 (국립환경과학원 자연환경연구과)
  • Received : 2017.12.15
  • Accepted : 2017.12.18
  • Published : 2017.12.30
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Abstract

The Okjukdong dune in Daecheong Island attracts national attention because of its unique landscape that is not covered by vegetation. However, there has been little knowledge on the timing of the dune formation, associated wind regime, and conservational strategies. In this study, we used OSL dating and grain size analyses to reveal the history of the dune development. In addition, we analyzed the wind regime in the dunefield which is surrounded by artificial coastal forest. The fine sand at Okjukdong underlain by a colluvial gravel layer indicates that the dune has been developed since at least 5 ka. Aeolian sands were found to be deposited around 700 years ago. The dunefield appears to have been severely eroded 30~60 years ago. The dune landscape has been destroyed after constructing a windbreak forest around the dunefield. The sand seems to be moving south and north with the season.

Keywords

Acknowledgement

Grant : 기후변화에 의한 자 연재해위험 저감방안 연구(V)

Supported by : 국립환경과학원