Recent sediment accumulation and origin of shelf mud deposits in the Yellow and East China Seas SCIE SCOPUS

Cited 146 time in WEB OF SCIENCE Cited 143 time in Scopus
Title
Recent sediment accumulation and origin of shelf mud deposits in the Yellow and East China Seas
Author(s)
Lim, D. I.; Choi, J. Y.; Jung, H. S.; Rho, K. C.; Ahn, K. S.
KIOST Author(s)
Lim, Dhongil(임동일)Jung, Hoi Soo(정회수)
Publication Year
2007
Abstract
Modem (last 100 yr) accumulation rates of shelf mud deposits in the Yellow and East China Seas were investigated using the distribution of excess Pb-210 (Pb-210(ex)) in sediment core samples. Compilation and merger of new and previously published data helped clarify sediment accumulation in these seas. The estimated accumulation rates, together with data of suspended sediment concentrations, provided findings on the sediment budget, origin, and transport pathway of the mud deposits. The overall accumulation distribution in the Yellow and East China Sea shelf revealed a general, cross-shelf decreasing trend along the sediment dispersal system away from the rivers, except for the South Sea (SSM) and southeastern Yellow Sea (SEYSM) mud patches found along the Korean coast. Notably, Pb-210(ex) activity profiles within the SSM and the SEYSM yielded a relatively high accumulation rate of 2-5 mm/yr, implying a sedimentation rate of 415 x 10(7) tons per year in this coastal zone. Such an annual accumulation rate is about one order of magnitude greater than the total sediment discharge (6-20 x 10(6) tons/yr) from Korean rivers, suggesting an additional offshore source. The distribution pattern of the well-defined suspended plume clearly showed the possible transport and exchange of fine-grained sediments between the ECS shelf and the coastal area of Korea, especially during winter. Such a high accumulation in Korean coastal areas is attributable to the sediments supplied from the mud deposit of the ECS (i.e., SWCIM), with origins in Chinese rivers. Therefore, the Korean coastal area may be an important sink for some of Chinese river sediments being transported from the south by the Yellow Sea Warm Current. (C) 2007 Elsevier Ltd. All rights reserved.
ISSN
0079-6611
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4791
DOI
10.1016/j.pocean.2007.02.004
Bibliographic Citation
PROGRESS IN OCEANOGRAPHY, v.73, no.2, pp.145 - 159, 2007
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
FINE-GRAINED SEDIMENTS; CONTINENTAL-SHELF; RIVER SEDIMENT; CLAY-MINERALS; KOREA STRAIT; INNER-SHELF; DISPERSAL; PB-210; RATES; FLUXES
Keywords
accumulation rate; sediment budget; shelf mud patches; suspended sediment concentration; Yellow Sea; East China Sea
Type
Article
Language
English
Document Type
Review
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

Marine Geochemistry,Paleoceanography,Marine Pollution,해양지화학,고해양학,해양오염학

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