Numerical modeling of cohesive sediment transport in a tidal bay with current velocity assimilation

Improving Sediment Transport Prediction by Assimilating Satellite Images in a Tidal Bay Model of Hong Kong

“…However, both the measured and simulated sediment concentrations exhibit a dynamic trend that is similar to the complicated dynamics of current velocities. This finding indicates that sediment transport is dominated by the current dynamics of the bay, which is in line with the previous study of Zhang et al [40]. Because deposited sediments need time to be resuspended to the water column after the occurrence of the maximum ebbing or flooding tidal period, the maximum value of sediment concentration lags behind the maximum value of current velocity by about one hour.…”

“…This indicates that salinity in the dry season of Deep Bay is largely dominated by brackish water intrusion from the outlet of the bay. However, in the wet season, as shown in Zhang et al [40], the salinity transport in Deep Bay did not show obvious correlation with tidal level variation, but was largely affected by the salinity of the water discharged from rivers.…”

“…A well calibrated and validated hydrodynamic and sediment transport model based on FVCOM that simulates the tide and sediment movement of Deep Bay has been built by Zhang et al [40]. However, the model was established for application in the wet season of the bay.…”

“…For application in the dry season in the present study, all parameters need to be recalibrated. Based on the hydrodynamic and sediment transport model parameters in Zhang et al [40], we use the trial-and-error method to adjust the parameters to achieve a consistent computed result with the measurement. After repeatedly adjustments, an optimal set of parameters has been determined for the model of Deep Bay in the dry season.…”

Data assimilation system for the finite-volume community ocean model based on a localized weighted ensemble Kalman filter

“…3 assimilated coastal acoustic tomography observations in Jiaozhou Bay, China via the EnKF. Reference 4 investigated current velocity assimilation using a three-dimensional OI scheme for Deep Bay, Hong Kong. Reference 5 studied the impact of sea surface temperature (SST) assimilation by a nudging scheme over the Persian Gulf.…”