IN-SITU MEASUREMENTS OF FLOCCULATED SUSPENDED MATTER WITH A VIDEO MULTI SENSOR SYSTEM

During the intercalibration experiment WIMS in the Elbe estuary near B runsbuttel a new configured Video Multi Sensor System was used to meas ure flee size, shape and concentration in correlation to tide signals such as current velocity and salinity. The results indicate the proble ms caused by time- and depth-dependent interference between the parame ters. In situ measurements from a floating ship have been conducted, b ecause special efforts are necessary to avoid any destructive influenc e on the fragile flocs.