퇴적물이동 3차원 모델링

Title
퇴적물이동 3차원 모델링
Alternative Title
Predictability of seabed change due to underwater sand mining in coastal waters of Korea
Author(s)
김창식; 임학수; 김진아
KIOST Author(s)
Lim, Hak Soo(임학수)Kim, Jinah(김진아)
Publication Year
2006-11-06
Abstract
Numerical modeling and field experiment have been conducted to predict the sediment transport arising from undersea sand extraction in coastal waters of Korea. The macro-tidal Kyunggi Bay is approximately 20,000 km2, where underwater sand has been extracted in the amount of approximately more than 35 million m3 annually. Suspended sediment released by over-spilled water to the surface water and the sea bed disturbance due to the action of cutter-head during dredging operation are critically important issues on benthic biology and coastal erosion. In this study, we conduct numerical simulation using ROMS to investigate the fate of sediment dispersion released at the surface as well as in the bottom layer. Each source level of different sediment size groups has been quantified using field experiment data. The three dimensional hydrodynamic forcing associated with combined effect of wave and current in the bottom layer has been also considered. According to the intensity of sand extraction and hydrodynamic condition, the sediment dispersion in the water column and the deposition feature at seabed show reasonable replacement of new sediment size group, that seems very important to the habitat change for the benthic community
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30777
Bibliographic Citation
Proc. 2006ROMS/TOMS Workshop (Online), pp.1 - 10, 2006
Publisher
USGS
Type
Conference
Language
English
Publisher
USGS
Related Researcher
Research Interests

Coastal Disaster Prevention,Coastal Erosion Research,Coastal Ocean Modeling,연안재해방재,연안침식연구,연안해양모델링

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