Joint influence of river stream, water level and wind waves on the height of sand bar in a river mouth

J. Laanearu, T. Koppel, T. Soomere, P.A. Davies

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    The hydraulics theory and wind-wave modelling are used to model annual changes of a threshold (sand bar) height at the mouth of the Narva River in 2002. The changes in the threshold height are attributed to two mechanisms: the cross-shore sediment transport driven by the river flow that erodes the obstacle and the long-shore transport forced by waves that increases the threshold height. It is shown that the flow stratification in the river mouth switches between one- and two-layer modes in different seasons, depending on variations of water level, river discharge and wave activity.
    Original languageEnglish
    Pages (from-to)287-302
    Number of pages16
    JournalNordic Hydrology
    Volume38
    Issue number3
    Publication statusPublished - 1 Jan 2007

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