Tidal flow modelling using a direct minimisation method

An operational model based on an inverse method is developed for the study of tidal flow in coastal areas. Models based on inverse methods can accommodate large quantities of measured data within the model domain and do not require initial or boundary data in the state variables. These are benefits...

Full description

Saved in:
Bibliographic Details
Published in:Coastal engineering (Amsterdam) 1998-07, Vol.34 (1), p.129-161
Main Authors: Copeland, G.J.M., Bayne, G.L.S.
Format: Article
Language:English
Subjects:
Data assimilation
Earth, ocean, space
Exact sciences and technology
External geophysics
Inverse problem
Mathematical model
Physics of the oceans
Surface waves, tides and sea level. Seiches
Tidal currents
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An operational model based on an inverse method is developed for the study of tidal flow in coastal areas. Models based on inverse methods can accommodate large quantities of measured data within the model domain and do not require initial or boundary data in the state variables. These are benefits that overcome the weaknesses in conventional direct models which can be ill-posed because of inadequate boundary data which cannot make use of extensive survey data. The method described in the paper uses a direct minimisation technique, and the governing equations are included as a weak constraint on the solution. This allows the relative influences of data and equations on the final solution to be defined. The model is validated using idealised topographies in terms of data assimilation, flow diversion by topography and tidal flooding and drying over a shoal.
ISSN:0378-3839
1872-7379
DOI:10.1016/S0378-3839(98)00014-3