Sedimentation history and excess metal deposition in estuarine barrier-island system of the Nakdong River, South Korea SCIE SCOPUS

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Title
Sedimentation history and excess metal deposition in estuarine barrier-island system of the Nakdong River, South Korea
Author(s)
Kang, Jeongwon; Jang, Seok; Huh, Sik; Shin, Dong Hyeok; Hyun, Sangmin
KIOST Author(s)
Kang, Jeong Won(강정원)Jang, Seok(장석)Shin, Dong Hyeok(신동혁)Hyun, Sangmin(현상민)
Alternative Author(s)
강정원; 장석; 허식; 신동혁; 현상민
Publication Year
2021-08
Abstract
Human activities, such as dam construction and reclamation, can affect sedimentation rates as well as sediment topography and transport in estuaries such as the Nakdong River Estuary. To investigate the sedimentation history, two sediment cores (1–2 m long) were sampled in tidal flats of the estuary. In addition, surface sediments were collected to study present sedimentation environments that appear to be three environments locally: 1) fine-grained sediment deposition; 2) sediments under stronger hydraulic energy; and 3) sandy sediments with good sorting. At the fine sediment deposition, environmental sensitive fraction of elements (Cu, Pb, As, and Co) show an increased sedimentation flux after the dam construction. On the other hand, organic matter-normalized Pb-210 concentrations in sediment core reveal that marine-originated organic matter is predominant in the upper ~45 cm of sediment layers, indicating a significant change in sedimentation history related to massive sedimentation within the Nakdong River Estuary.
ISSN
0025-326X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41412
DOI
10.1016/j.marpolbul.2021.112499
Bibliographic Citation
Marine Pollution Bulletin, v.169, 2021
Publisher
Pergamon Press Ltd.
Keywords
Sedimentation history; Excess metal flux; Estuary; Coastal barrier
Type
Article
Language
English
Publisher
Pergamon Press Ltd.
Related Researcher
Research Interests

sediment chemistry,atmospheric chemistry,Chemical Oceanography,퇴적물화학,대기화학,해양화학

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