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Water SA

versão On-line ISSN 1816-7950
versão impressa ISSN 0378-4738


BECK, JS  e  BASSON, GR. Klein River Estuary (South Africa): 2D numerical modelling of estuary breaching. Water SA [online]. 2008, vol.34, n.1, pp.33-38. ISSN 1816-7950.

2D numerical modelling of the breaching process of the Klein River Estuary in South Africa was carried out. The model was calibrated on field data and performs reasonably well, and is able to simulate the ebb and flood channels that form upstream of the mouth. The focus of the simulations was to determine the effectiveness of flushing of sediments during breaching, by investigating the breaching process at different water levels in the estuary, as well as at two different areas along the berm. Breaching at higher water levels increases the effectiveness of flushing as the discharge through the mouth increases significantly at higher water levels. Flushing towards the middle or south-east side of the berm is much more effective than towards the north-west side.

Palavras-chave : estuary; breaching; Klein River; sediment flushing; numerical modelling.

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