Abstract

In situ particle size and volume concentration of suspended sediment was measured at the mouth of Seomjin River Estuary In February 2001, using an optical instrument, 'LISST-100'. Time variation of in situ particle size and concentration shows: (1) during ebb tide, Seomjin River supplies relatively fine-grained particles with less-fluctuated, compared to during flood tide, and well-behaved concentrations following the tidal cycle; and (2) during flood tide, relatively coarse-grained particles with highly variable in size distribution and concentration flow upstream from Kwangyang Bay. This explains a poor correlation $(r^{2}=0.10)$ between sediment concentration and beam attenuation coefficient during flood and a high degree of correlation $(r^{2}=0.80)$ during ebb tide. Relatively fine grained and well defined, monotonous size distribution may promote the correlation between concentration and beam attenuation coefficient due to optical homogeneity of particles during ebb tide. Abundance of large aggregates with time-varying size and shape distributions may be mainly responsible for variations in optical properties of the sediment during flood tide, and thus may confound the relationship between the two variables. The difference in particle sizes and shapes between flood and ebb tides can also be observed on SEM images.

주제어

#LISST-100   #In situ particle size   #Attenuation coefficient   #Suspended sediment   #Seomjin River estuary  

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이 논문을 인용한 문헌 (4)

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3. Lee, Byoung-Kwan ; Kim, Seok-Yun ; Cho, Hyun-Man 2010. "Distribution and Behaviors of In-Situ Suspended Particulate Matters of Gwangyang Bay" 韓國海洋工學會誌 = Journal of ocean engineering and technology, 24(1): 99~105  원문보기 상세보기
4. Park, Mi-Ok ; Kim, Seong-Soo ; Kim, Seong-Gil ; Kwon, Jinam ; Lee, Suk-Mo ; Lee, Yong-Woo 2012. "Factors Controlling Temporal-Spatial Variations of Marine Environment in the Seomjin River Estuary Through 25-hour Continuous Monitoring" 한국해양환경공학회지 = Journal of the Korean society for marine environmental engineering, 15(4): 314~322  원문보기 상세보기