In fresh/brackish water, the flocculation processes are reduced, which have an impact on the settling velocity. Due to the smaller floc sizes, the settling velocity will be reduced. This is modelled by multiplying the settling velocity with a factor.
Salinity only plays a significant role on flocculation at salinities below 9 psu.
(5.8)
where
ws,sali: |
Particle settling velocity including salinity |