경기만의 장기간 바다모래 채취로인한 해저서식환경 변화 예측 연구

Title
경기만의 장기간 바다모래 채취로인한 해저서식환경 변화 예측 연구
Alternative Title
Prediction of seabed habitat change due to sand mining in coastal waters of Korea
Author(s)
김창식; 임학수; 김진아
KIOST Author(s)
Lim, Hak Soo(임학수)Kim, Jinah(김진아)
Publication Year
2007-09-21
Abstract
Investigation of the sediment transport and change in surface sediments at the seabed is conducted for marine sand mining operation in Kyunggi Bay, Korea. A new methodology established through field experiment is proposed and applied in numerical simulation to predict the redistribution of sediments deposited away from the dredging site. Differentiation of sediment composition into each grain size group yields the different transport behavior in nature and in numerical simulation. A three dimensional numerical model, ROMS (Regional Ocean Modeling System) is used for sediment transport modeling using realistic surface and tidal forcing. The marine sand mining intensity is imposed on the modeling along with empirical parameters estimated from the field experiment.In the current study, a new procedure of estimating the suspended sediment source from the dredger has been suggested based on numerous field surveys, especially employing discrimination of size class of composed sediments.The present study improves our ability to predict the reworking processes of composed sediments by employing new concept of size-dependent behavior. However it is still open to further work to include the resuspension process for more quantitative prediction of seabed change arising from long-term dredging of marine sand in shallow waters as in Kyunggi Bay.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30363
Bibliographic Citation
Proceeding of APAC2007 Full Paper (CD), pp.1334 - 1345, 2007
Publisher
Nanjung Hydraulic Institute
Type
Conference
Language
English
Publisher
Nanjung Hydraulic Institute
Related Researcher
Research Interests

Coastal Disaster Prevention,Coastal Erosion,Coastal Ocean Modeling,연안재해방재,연안침식,연안해양모델링

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