Bedform dynamics and sand transport pathways in the Garolim Bay tidal flat, west coast of Korea SCIE SCOPUS KCI

Cited 4 time in WEB OF SCIENCE Cited 3 time in Scopus
Title
Bedform dynamics and sand transport pathways in the Garolim Bay tidal flat, west coast of Korea
Author(s)
Jo, Hyung Rae; Lee, Hee Jun
KIOST Author(s)
Lee, Hee Jun(이희준)
Publication Year
2008-09
Abstract
An autonomous instrument was deployed over a period of 17 days on the sand flat in Garolim Bay, west coast of Korea to investigate sand transport and bedform dynamics. Spring tidal currents reaching up to 0.9 m/s in depth-averaged speed generated 3-D, small dunes with average wavelength and height of 2.3 m and 0.15 m, respectively. The dunes migrated back and forth in response to reversing tidal currents with the migration distance less than one wavelength for each of flood and ebb. With a decrease of current speed below ca. 0.6 m/s (depth-averaged) during the spring-neap transition, the dunes were rapidly replaced with 3-D ripples. The ripples, however, did not grow to dunes with increasing current speed in the following spring tide. Bedload transport was estimated quantitatively on the basis of the hydrodynamic data. Over the measurement period, repeated flood-and ebb-oriented transport towards the SSW and the NE, respectively, resulted in residual bedload transport towards the ESE. By synthesizing the present result with the previously known bedload transport in the adjacent subtidal areas, it is inferred that the sands in Garolim Bay circulate through the subtidal channels and sand bodies and the intertidal flat, following two, discrete but interconnected, clockwise pathways.
ISSN
1226-4806
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4458
DOI
10.1007/s12303-008-0030-9
Bibliographic Citation
GEOSCIENCES JOURNAL, v.12, no.3, pp.299 - 308, 2008
Publisher
GEOLOGICAL SOCIETY KOREA
Subject
YELLOW-SEA; SEDIMENT DISTRIBUTION; MACROTIDAL FLATS; MIGRATION
Keywords
tidal sand; bedload transport; bedform; transport pathway; Garolim Bay
Type
Article
Language
English
Document Type
Article
Publisher
GEOLOGICAL SOCIETY KOREA
Related Researcher
Research Interests

Marine Geology,Sediment Dynamics,해양지질,퇴적역학

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