CALIBRATION OF 3 RESUSPENSION SEDIMENTATION MODELS/

Three resuspension and sedimentation models (Blom, Lick and Partheniad es and Krone) are calibrated and evaluated on data from flume experime nts with sediments from Lake Ketel and in situ suspended solids measur ements. We applied a formal parameter estimation technique in combinat ion with a statistical evaluation of the model fit and parameter estim ates. All three models produce a reasonable reconstruction of the data from the flume experiment and the in situ observations. The differenc es in the model At of the three models are small, except for the in si tu observations. Here the sum of squared residuals for Partheniades an d Krone's is about twice the sum for Blom's and Lick's model. The corr elation between parameters in resuspension/sedimentation models can be very high, leading to an uncertainty in parameter estimates of 25-50. The parameter estimations based on the flume data are up to orders of magnitude higher than those estimated from field observations. (C) 19 98 IAWQ. Published by Elsevier Science Ltd.