STUDY FOR TURBIDITY DIFFUSION SIMULATION WITH TURBIDITY DISTRIBUTION BY SATELLITE DATA AS INITIAL CONDITION

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  • 衛星データを活用した濁り平面分布を初期値とした濁り拡散解析の検討

Abstract

<p> In offshore construction projects where turbidity is generated, such as reclamation, it is effective to predict the next day's turbidity dispersion and proceed with the construction. In actual construction projects, the practice of turbidity dispersion forecasting has not progressed due to the lack of a method to measure the distribution plane of turbidity, which serves as the initial value for the simulation. The objective of this study is to develop a method to incorporate the planar distribution of turbidity into the initial values of the analysis in order to ensure the accuracy of turbidity dispersion prediction that can be used in construction projects. In this paper, an estimated turbidity distribution map was created using satellite images capturing turbidity diffusion, and calculations of turbidity diffusion were conducted using this as the initial value. As a result, it was inferred from the satellite data analysis that sedimentation has a significant effect on the process of decreasing turbidity. The diffusion prediction calculation that incorporated the planar distribution as an initial value showed that the planar distribution could be reproduced by incorporating the effect of sedimentation, suggesting the validity of the method.</p>

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