In situ measurements of flocculated suspended matter with a video multi sensor system

During the intercalibration experiment WIMS in the Elbe estuary near Brunsbüttel a new configured Video Multi Sensor System was used to measure floc size, shape and concentration in correlation to tide signals such as current velocity and salinity. The results indicate the problems caused by time-and depth-dependent interference between the parameters. In situ measurements from a floating ship have been conducted, because special efforts are necessary to avoid any destructive influence on the fragile flocs.