Transgressive sedimentation and stratigraphic evolution of a wave-dominated macrotidal coast, western Korea SCIE SCOPUS

Cited 40 time in WEB OF SCIENCE Cited 42 time in Scopus
Title
Transgressive sedimentation and stratigraphic evolution of a wave-dominated macrotidal coast, western Korea
Author(s)
Yang, ByongCheon; Dalrymple, Robert W.; Chun, SeungSoo; Lee, HeeJun
KIOST Author(s)
Lee, Hee Jun(이희준)
Publication Year
2006-12-20
Abstract
The entire west coast of Korea is macrotidal. However, unlike the embayed tide-dominated coasts to the north and south, the central west coast is relatively straight and wave-dominated. It has developed a retrogradational, coarsening-upward succession as a result of barrier-island retreat during the later stages of the Holocene transgression; within embayments, the transgressive succession is overlain by a fining-upward progradational succession indicating the onset of highstand conditions. A tide-dominated environment may have existed during the early stages of the transgression as the shoreline traversed the flat-floored Yellow Sea, but the coastal zone of central western Korea became wave-dominated as sea level neared the current highstand level and encountered a steeper portion of the pre-transgression surface. The resultant small, coast-normal tidal prism produced relatively weak tidal currents, which allowed for the development of barrier islands, except at the mouths of large embayments. With continued transgression, the former barriers have retreated landward over their back-barrier tidal flats, producing thick transgressive deposits (> 8 in) that were preserved because the vector of coastal retreat had a significant vertical component. Remnants of barrier islands are present only in isolated small embayments; elsewhere back-barrier areas were over-ridden and the barrier became attached to the pre-existing cliffs. The sand then dispersed to form the modem, wave-dominated, open-coast tidal flats. Conditions in the study area lie at the transition between wave- and tide-dominated sedimentation, and slight spatial or temporal changes in the relative important of waves and tidal currents cause significant changes in the morphology and facies. This study confirms earlier work that showed that a tidal range of 4 m is not the upper limit of wave-dominated conditions. Tidal prism has a more direct control on coastal dynamics than tidal range. (c) 2006 Elsevier B.V. All rights reserved.
ISSN
0025-3227
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4809
DOI
10.1016/j.margeo.2006.10.003
Bibliographic Citation
MARINE GEOLOGY, v.235, no.1-4, pp.35 - 48, 2006
Publisher
ELSEVIER SCIENCE BV
Subject
SOUTHEASTERN YELLOW SEA; TIDAL-FLAT; HAENAM BAY; LEVEL RISE; GOMSO BAY; DEPOSITS; MORPHODYNAMICS; DYNAMICS
Keywords
Holocene stratigraphic evolution; wave-dominated macrotidal coast; barrier island; tidal prism; western Korean coast
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
ELSEVIER SCIENCE BV
Related Researcher
Research Interests

Marine Geology,Sediment Dynamics,해양지질,퇴적역학

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