On the parameter setting of semi-empirical long-term morphological models for estuaries and tidal lagoons

Wang, Z. and de Vriend, H. and Stive, M. and Townend, I. (2007) On the parameter setting of semi-empirical long-term morphological models for estuaries and tidal lagoons. In: Proceedings of 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. IAHR.

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Abstract

Predicting the long-term morphological development of estuaries and tidal lagoons is a challenging topic, despite the progress made recently. One of the advancements is the development and successful applications of the semi-empirical models ASMITA and ESTMORF. They combine empirical relations for morphological equilibriums with aggregated descriptions of physical processes. A difficulty in their application is that they rely on aggregated parameters, which are not directly measurable physical quantities. Here we try to relate the aggregated model parameters to the physical parameters used in the process-based models, by comparing the semi-empirical model concept with the process-based model concept, using analytical solutions. This results in relations between the aggregated model parameters and measurable physical quantities. The analysis also gives an indication of the data required for a good model calibration. It follows that with limited field data, the range of applicability of a ‘calibrated’ model is necessarily limited.

Item Type: Book Section
Subjects: Maritime > Estuary management
Divisions: Maritime
Depositing User: Unnamed user with email i.services@hrwallingford.com
Date Deposited: 02 Apr 2020 09:47
Last Modified: 29 May 2020 12:31
URI: http://eprints.hrwallingford.com/id/eprint/630

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