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Estimating estuarine residence times in the Westerschelde (The Netherlands) using a box model with fixed dispersion coefficients
Soetaert, K.; Herman, P.M.J. (1995). Estimating estuarine residence times in the Westerschelde (The Netherlands) using a box model with fixed dispersion coefficients. Hydrobiologia 311(1-3): 215-224. https://dx.doi.org/10.1007/BF00008582
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, more
Related to:
Soetaert, K.; Herman, P.M.J. (1995). Estimating estuarine residence times in the Westerschelde (The Netherlands) using a box model with fixed dispersion coefficients, in: Heip, C.H.R. et al. Major biological processes in European tidal estuaries. Developments in Hydrobiology, 110: pp. 215-224, more
Peer reviewed article  
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Keywords
    Coefficients > Exchange coefficients > Diffusion coefficients
    Models > Mathematical models
    Monitoring > Environmental monitoring
    Motion > Water motion > Circulation > Water circulation
    Motion > Water motion > Circulation > Water circulation > Shelf dynamics > Estuarine dynamics
    Profiles > Vertical profiles > Salinity profiles
    Residence time
    ANE, Netherlands, Westerschelde [Marine Regions]
    Marine/Coastal; Brackish water
Author keywords
    Residence times; Estuary; Estuarium
Authors  Top 
Abstract
    The residence time of the water masses in the Westerschelde estuary was determined using a simple compartment-model that simulates the advective-diffusive transport of a conservative dissolved substance (chlorinity). The residence time of a water parcel in the upstream part of the estuary (i.e. the time needed for this water parcel to leave the estuary) varied from about 50 days in winter to about 70 days in summer. The most seaward compartment had residence times of about 10-15 days. Dispersive coefficients that are fixed in time were able to reproduce the observed salinity distributions very well in the Westerschelde. They were obtained by calibration on observed chlorinities. It is argued that the apparent relationship of dispersive coefficients with freshwater flow, which is observed in certain studies, could (partly) reflect the deviation from steady state conditions which are required assumptions to calculate these dispersive coefficients directly from salinity profiles.
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