Burmeister, Kristin (2012) Observational Evidence of Estuarine Circulation in the Wadden Sea - Current Velocity, Salinity and Turbulence. (Bachelor thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, .25 pp.

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Abstract

This Bachelor-Thesis is about estuarine circulation in the tidal Marsdiep inlet, Netherlands, and its influencing factors. The groundwork is given in the study Burchard et al. (2008) - presenting a one-dimensional model for the influence of tidal straining on estuarine circulation resulting in a net inward suspended matter transport - and a study of Flöser et al. (2011) - presenting observational evidence for Burchard’s model in the German Wadden Sea. Salinity and temperature data of a jetty station in Texel, water discharges of Lake Ijssel and the Rhine as well as current velocity data of a ferry mounted ADCP crossing the inlet every day (January 2009 to March 2012) were analysed. The results present high variations in cross-shore density gradients, tidal straining and tidal asymmetry in vertical current velocity profiles. The results are compared to the data of the German Wadden Sea and exhibits large differences due to the special water density conditionings in the Marsdiep inlet. Clear evidence for Burchard’s model could not be found. In contrast, it is questionable whether the model is representative for this complex dynamical regime in the western Dutch Wadden Sea.

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