Long-term environmental changes in the Geum Estuary (South Korea): Implications of river impoundments
- Authors
- Kang, Sujin; Kim, Jung-Hyun; Joe, Young Jin; Jang, Kwangchul; Nam, Seung-Il; Shin, Kyung-Hoon
- Issue Date
- Jul-2021
- Publisher
- Pergamon Press Ltd.
- Keywords
- Geum Estuary; Sedimentary organic carbon; Stable carbon isotope; n-Alkanes; River impoundment
- Citation
- Marine Pollution Bulletin, v.168, pp 1 - 7
- Pages
- 7
- Indexed
- SCIE
SCOPUS
- Journal Title
- Marine Pollution Bulletin
- Volume
- 168
- Start Page
- 1
- End Page
- 7
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/105726
- DOI
- 10.1016/j.marpolbul.2021.112383
- ISSN
- 0025-326X
1879-3363
- Abstract
- We investigated a sediment core collected from the Geum Estuary through sedimentological and geochemical analyses. Three lithological units were classified based on sedimentological characteristics. Unit 1 and Unit 3 were geochemically distinct, while Unit 2 was the transitional phase between them. The geochemical results suggest that the contribution of terrestrial organic carbon (OC) to the sedimentary OC pool in the coarse-grained Unit 1 was lesser than that of fine-grained Unit 3. The excess activity (210Pbex) and the sedimentation rate indicate that Unit 1 corresponded to 1977 Common Era (CE). Since the first dam construction on the Geum River began in 1975 CE, the deposition of Unit 1 in the Geum Estuary is likely associated with river impoundments, which reduce the delivery of fine-grained sediment and terrestrial OC to the estuary. This study highlights the role of river impoundments in altering the sedimentary OC and thus the sedimentary environment in the estuary.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF MARINE SCIENCE AND CONVERGENCE ENGINEERING > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/105726)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.