Laboratory model studies of flushing of trapped salt water from a blocked tidal estuary

P. A. Davies, Y Guo, M. J. Coates

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    Results are presented from a series of laboratory model studies of flushing of saline water from a partially- or fully-closed estuary mouth. Experiments have been carried out to determine the response of the trapped saline volume as a function of the fresh water river discharge Q, the density difference Delta rho between the saline and fresh water and the estuary bed slope alpha. Flow visualisation and density probe data confirm that the transient behaviour of the plume can be represented well by the use of length and time scales Q(2/5)/(g')(1/5) and Q(1/5)/(g')(3/5) respectively, where g' = g(Delta rho)/rho(0) is the modified gravitational acceleration and rho(0) is the density of the freshwater now.

    Original languageEnglish
    Title of host publicationEnvironmental hydraulics
    Subtitle of host publicationproceedings of the 2nd International Symposium on Environmental Hydraulics, Hong Kong, China, 15-18 December, 1998
    EditorsJ.H.W. Lee, A.W. Jayawardena, Z.Y. Wang
    Place of PublicationRotterdam
    PublisherA. A. Balkema Publishers
    Number of pages5
    ISBN (Print)9058090353
    Publication statusPublished - 1999
    Event2nd International Symposium on Environmental Hydraulics - HONG KONG, China
    Duration: 16 Dec 199818 Dec 1998


    Conference2nd International Symposium on Environmental Hydraulics
    Internet address

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