TY - JOUR
T1 - Numerical prediction of suspended sediment concentrations in the Ariake Sea, Japan, using a time-dependent sediment resuspension and deposition model
AU - Hiramatsu, Kazuaki
AU - Shikasho, Shiomi
AU - Mori, Ken
N1 - Funding Information:
Acknowledgements The authors wish to acknowledge the Isahaya Bay Reclamation Project Office, the Kyushu Regional Agricultural Administration Office, the Ministry of Agriculture, and Forestry and Fisheries of Japan for the acquisition of the in situ suspended sediment concentration and tidal flow velocity measurement data.
PY - 2005/3
Y1 - 2005/3
N2 - The Ariake Sea, a typical semi-closed bay located in Kyushu Island, western Japan, has a maximum tidal range of 6 m in spring tide, and its vast tidal flats are composed of both sandy bottom areas and muddy bottom areas. In this study, two-dimensional depth-averaged finite difference numerical models have been developed for predicting the tidal flow velocity and suspended sediment concentration in the Ariake Sea. In the suspended sediment transportation model, a time-dependent sediment resuspension and deposition process was modeled as a response to the tidal flow by considering the presence of cohesive bottom sediment. The shifting-particles method, known as an operator-splitting technique, was used for time integration of the convective-dispersion equation. The model results were compared with in situ measurements of suspended sediment concentration and tidal flow velocity at several points in Isahaya Bay-located at the western part of the Ariake Sea-and also with the estimated suspended sediment concentration distribution via a Landsat Thematic Mapper image. The results indicated that the models were able to predict the measured values for suspended sediment concentration and tidal flow velocity, as well as the spatial distribution pattern of the suspended sediment concentration as estimated by the Landsat Thematic Mapper image.
AB - The Ariake Sea, a typical semi-closed bay located in Kyushu Island, western Japan, has a maximum tidal range of 6 m in spring tide, and its vast tidal flats are composed of both sandy bottom areas and muddy bottom areas. In this study, two-dimensional depth-averaged finite difference numerical models have been developed for predicting the tidal flow velocity and suspended sediment concentration in the Ariake Sea. In the suspended sediment transportation model, a time-dependent sediment resuspension and deposition process was modeled as a response to the tidal flow by considering the presence of cohesive bottom sediment. The shifting-particles method, known as an operator-splitting technique, was used for time integration of the convective-dispersion equation. The model results were compared with in situ measurements of suspended sediment concentration and tidal flow velocity at several points in Isahaya Bay-located at the western part of the Ariake Sea-and also with the estimated suspended sediment concentration distribution via a Landsat Thematic Mapper image. The results indicated that the models were able to predict the measured values for suspended sediment concentration and tidal flow velocity, as well as the spatial distribution pattern of the suspended sediment concentration as estimated by the Landsat Thematic Mapper image.
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U2 - 10.1007/s10333-004-0057-0
DO - 10.1007/s10333-004-0057-0
M3 - Article
AN - SCOPUS:16444385439
SN - 1611-2490
VL - 3
SP - 13
EP - 19
JO - Paddy and Water Environment
JF - Paddy and Water Environment
IS - 1
ER -