Sedimentation studies on the working-island
in the Philipsdam
The morphology in the channel-beds in our
Delta area is determined, to a great extent, by
the strength of the tidal currents. Layers of
sediment in cross-sections of the bed clearly
demonstrate the different processes that have
taken place.
When the building activities for the Krammer
Sluices started, a cross-section was disclosed
which had been formed only twenty years ago
due to the silting of a flood channel: the
cross-section often shows sediment-ripples in
the flood-direction.
It appeared that the thickness of the ripples
corresponded with the neap-tide and spring-tide
cyclus.
Sediment transport in the Oosterschelde
estuary
Any change in the amount of sediment in the
Oosterschelde, or of the organic fraction in it,
may possibly affect the zoo-benthos in the
estuary. Therefore, the sediment-flows and
sedimentation patterns in the basin are being
investigated.
Measurements and calculations have shown a
number of contradictory outcomes up till now.
To explain these, further knowledge about the
mechanisms of sedimentation and erosion is
required. Up to the present it has only been
possible to explain qualitatively the resultant
sediment transport in landward direction. In
the future, quantified simulations will also be
computerized in a numerical mathematical
model, which has been developed for this
specific purpose.
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