Evaluation of Accumulation of Suspended Particles from Rivers in Ariake Bay

Abstract

To evaluate the transport and accumulation of suspended particles from the rivers in Ariake Bay basin, we simulated the movement of particles discharged from the main rivers and Isahaya Reservoir using a three-dimensional flow model and the Euler-Lagrange method. This model was able to quantitatively estimate the spatio-temporal behavior of particles during the process of accumulation on the sea bottom and the subsequent resuspension in water columns. Hereafter, we will attempt to validate this model with a collection of real data from each of the locations that was simulated, while also estimating the contribution of particles from each source into the bay. Furthermore, this simulation model could be useful for predicting the movement of plankton during red tides, as well as the journey of pelagic bivalve larvae.