Changes of sedimentary environments in the Saemangeum tidal flat on the west coast of Korea SCOPUS KCI

Title
Changes of sedimentary environments in the Saemangeum tidal flat on the west coast of Korea
Author(s)
Woo, H.J.; Choi, J.U.; An, S.; Kwon, S.J.; Koo, B.J.
KIOST Author(s)
Woo, Han Jun(우한준)Koo, Bon Joo(구본주)
Publication Year
2006-12
Abstract
The Saemangeum tidal flat with an area of approximately 233 km2 is one of the biggest estuarine tidal flats on the west coast of Korea. Because of its location in the estuary of Mangyeong and Dongjin Rivers, the tidal flat receives large amount of sediments. A 33-km long sea dyke, enclosing a coastal zone of 401 km2, was constructed to reclaim tidal flat in the Saemangeum area. The dyke construction radically changes the local tidal current regime and estuarine circulation. These have an effect on sedimentary environments in the tidal flat. On the tidal flats of the study area net deposition occurred, but net erosion occurred near tidal channel in 2004. The comparison of topography and surface sediments in summer 2004 with those in summer 1988 before the dyke construction showed that elevation increased with maximum 80cm and mean grain sizes were fining at Gwanghwal tidal flats. Sedimentary facies of two cores from Gwanghwal tidal flat revealed homogeneous layers in the upper part, suggesting rapid deposition after the dyke construction. The sedimentation rate in Gwanghwal tidal flat(GW 6) using 210Pb analysis was about 5.4 cm/yr, which is well matched with the sedimentation pattern revealed by change in topography.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/6512
DOI
10.4217/OPR.2006.28.4.361
Bibliographic Citation
Ocean and Polar Research, v.28, no.4, pp.361 - 368, 2006
Publisher
Korea Ocean Research and Development Institute
Keywords
Saemangeum tidal flat; Sedimentation rate; Sediments; Topography
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Coastal Sedimentary Processes,Micropaleontology(Foraminifera and Pollen),Paleoenvironmental Reconstruction,연안퇴적작용,미고생물(유공충 및 화분),고환경 복원

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