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| Titel |
Fine sediment dynamics in the Río de la Plata |
| VerfasserIn |
M. Fossati, F. Cayocca, I. Piedra-Cueva |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Proceedings of river, coastal and estuarine morphodynamics ; Nr. 39 (2014-04-01), S.75-80 |
| Datensatznummer |
250121307
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| Publikation (Nr.) |
 copernicus.org/adgeo-39-75-2014.pdf |
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| Zusammenfassung |
| This paper investigates the main characteristics of the fine sediments
dynamics in a very complex and extensive inner shelf area located in South
America, the Río de la Plata. The results derive from a 5 yr
international research program that allowed intensive data acquisition
throughout the area, as well as the development of the first numerical model
investigating sediment dynamics at a regional scale in the area. The model
is based on the MARS3D suite: it computes the regional tide- and
wind-induced circulation, as well as sediment mixtures dynamics (erosion,
advection and deposition of several sedimentary variables). Erosion due to
wave action is taken into account thanks to the use of SWAN. The
hydrodynamic and wave models were calibrated against several measurements in
different zones of the Río de la Plata. Turbidity data (time series and
vertical profiles) were then used in order to calibrate the sediment
dynamics model. The model is shown to accurately reproduce the sediment
concentration variability during both fair and stormy weather conditions in
the intermediate and in the outer Río de la Plata. The paper also shows
that the suspended sediment dynamics in the Río de la Plata is mainly
driven by water/bottom exchanges. |
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