Abstract
A field survey was performed in the Lower Weser River covering a 30-km-long estuarine section to study the turbidity zone in its complete extension.
Continuously recording CTD probes upgraded with current meters and in part with optical transmission sensors were moored along the estuary. In addition, three shipborne vertical profilers measured conductivity, temperature and optical transmission at 16 positions. By this sampling technique we acquired data, resolving the turbidity zone by 1 km in space and by better than 1 h in time.
We found the position of the zero residual current at the bottom slightly up-estuary of the turbidity maximum. We further observed that the turbidity maximum moves only about half the distance that the waterbody is carried during a tidal cycle. The suspended sediment settles shortly after resuspension even at fully developed tidal currents, thus limiting the longitudinal extension of the turbidity maximum.
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© 1988 Springer-Verlag Berlin Heidelberg
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Riethmüller, R. et al. (1988). Hydrographic Measurements in the Turbidity Zone of the Weser Estuary. In: Dronkers, J., van Leussen, W. (eds) Physical Processes in Estuaries. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-73691-9_18
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DOI: https://doi.org/10.1007/978-3-642-73691-9_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-73693-3
Online ISBN: 978-3-642-73691-9
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