Zoning of coastal environments based on sediment textural and geochemical characteristics and their major oceanographic constraints: A case study in South Korea SCIE SCOPUS

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Title
Zoning of coastal environments based on sediment textural and geochemical characteristics and their major oceanographic constraints: A case study in South Korea
Author(s)
Jung, Hoi Soo; Lim, Dhongil; Xu, Zhaokai; Kim, Jihun; Lee, Jun Ho; Jeong, Do Hyun
KIOST Author(s)
Jung, Hoi Soo(정회수)Lim, Dhong Il(임동일)Kim, Ji Hun(김지훈)Lee, Jun Ho(이준호)Jeong, Do Hyun(정도현)
Alternative Author(s)
정회수; 임동일; 김지훈; 이준호; 정도현
Publication Year
2021-09-15
Abstract
To assess the environmental impacts of offshore wind farming and sea sand mining, coastal areas are zoned on the basis of their natural oceanographic characteristics. Textural and geochemical properties of South Korean coastal sediments, including mean grain size (Mz), CaCO3 and organic-matter contents, and metal concentrations (Al, K, Ba, rare earth elements, Zr, etc.), were analyzed and categorized in this case study, practically applying common sediment properties for rational zoning of the South Korean coastal environment. Three characteristic zones are scientifically classified in the study area, although four groups of sediment sampling stations were statistically clustered based on their major sediment properties. Zone 1, in the northwestern part of the Korean west coast, is characterized as covered with coarse-grained sediments containing low concentrations of the measured elements under a macro-tidal regime (6.5-9 m), while Zone 3 is characterized by fine-grained sediments with high elemental concentrations under a micro-tidal regime (>3.5 m). Silty Zone 2 sediments appear to be a mixture of sandy Zone 1 and muddy Zone 3 sediments under a meso-tidal regime. The difference in tidal forces among the zones is proposed as a primary constraint of overall sediment textural and geochemical characteristics, while sediment provenance provides subsequent control. Sediment contamination with anthropogenic pollutants is unperceivable in this case study. However, the K and Li concentrations in coarse-grained feldspar and fine-grained illite, respectively, are likely not limited by the tidal flow regime.
ISSN
1367-9120
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41512
DOI
10.1016/j.jseaes.2021.104883
Bibliographic Citation
JOURNAL OF ASIAN EARTH SCIENCES, v.218, 2021
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
SOUTHEASTERN YELLOW SEA; SURFACE SEDIMENTS; SHELF; STRATIGRAPHY; ORIGIN; NORMALIZATION; ACCUMULATION; DISPERSAL; EVOLUTION; MINERALS
Keywords
Coastal sediment; Environmental impact assessment; Grain size; Metal concentration; Tidal regime
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
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