On the modelling of biological effects on morphology in estuaries and seas
On the modelling of biological effects on morphology in estuaries and seas
Morphological modelling aims to explain and predict the changes in rivers, seas and estuaries due to these interaction. In recent history, a lot of progress has been made, especially with stability analysis approaches. However, so far only the physical interactions have been taken into account. It is known however, that biological factors are important to the dynamics of the water systems. In this paper a first step is made in the inclusion of biology into the morphodynamic models. This inclusion is based on the effect that benthic organisms have on the erodibility of the bed. This can easily be included by a change of the critical bed shear stress. These changes in the critical bed shear stress then influence the morphology. This idea has been applied to two cases. The results of the first case indicate that this approach can reproduce the influence of benthic organisms on the mud content of the bed in estuaries. The second case shows that even low numbers of organisms can influence the characteristics of large bed forms.
283-292
Knaapen, M. A. F.
6a412efa-c285-4af3-8f07-1182f06faa58
Holzhauer, H.
fb7ed255-2007-4414-9b03-ba380fd4a534
Hulscher, S.J.M.
b2984836-2e8a-4b14-a3c4-7649a6338aaa
Baptist, M.J.
3aa14128-66ac-4117-b988-9f7a4d64249e
De Vries, T.T.
a07d1991-7247-4420-84dd-3f620e3d85c7
Van Ledden, M.
f9bc0377-0b91-48c7-92fd-a9f3226edd45
September 2003
Knaapen, M. A. F.
6a412efa-c285-4af3-8f07-1182f06faa58
Holzhauer, H.
fb7ed255-2007-4414-9b03-ba380fd4a534
Hulscher, S.J.M.
b2984836-2e8a-4b14-a3c4-7649a6338aaa
Baptist, M.J.
3aa14128-66ac-4117-b988-9f7a4d64249e
De Vries, T.T.
a07d1991-7247-4420-84dd-3f620e3d85c7
Van Ledden, M.
f9bc0377-0b91-48c7-92fd-a9f3226edd45
Knaapen, M. A. F., Holzhauer, H., Hulscher, S.J.M., Baptist, M.J., De Vries, T.T. and Van Ledden, M.
(2003)
On the modelling of biological effects on morphology in estuaries and seas.
In Proceedings of the 3rd IAHR Symposium on River, Coastal and Estuarine Morphodynamics.
.
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Conference or Workshop Item
(Paper)
Abstract
Morphological modelling aims to explain and predict the changes in rivers, seas and estuaries due to these interaction. In recent history, a lot of progress has been made, especially with stability analysis approaches. However, so far only the physical interactions have been taken into account. It is known however, that biological factors are important to the dynamics of the water systems. In this paper a first step is made in the inclusion of biology into the morphodynamic models. This inclusion is based on the effect that benthic organisms have on the erodibility of the bed. This can easily be included by a change of the critical bed shear stress. These changes in the critical bed shear stress then influence the morphology. This idea has been applied to two cases. The results of the first case indicate that this approach can reproduce the influence of benthic organisms on the mud content of the bed in estuaries. The second case shows that even low numbers of organisms can influence the characteristics of large bed forms.
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Published date: September 2003
Venue - Dates:
hird IAHR Symposium on River, Coastal and Estuarine Morphodynamics, Barcelona, Spain, 2003-08-31 - 2003-09-04
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Local EPrints ID: 75816
URI: http://eprints.soton.ac.uk/id/eprint/75816
PURE UUID: 6925d1ea-ae3e-4d2f-afb7-5fda6951c769
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Date deposited: 11 Mar 2010
Last modified: 10 Dec 2021 16:59
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Contributors
Author:
M. A. F. Knaapen
Author:
H. Holzhauer
Author:
S.J.M. Hulscher
Author:
M.J. Baptist
Author:
T.T. De Vries
Author:
M. Van Ledden
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