A SEMI-ANALYTIC MODEL OF TIDAL INLETS AND THEIR EVOLUTION

Magnus Larson, Almir Nunes De Brito Junior, Hitoshi Tanaka, Hans Hanson

Research output: Contribution to conferenceAbstract

Abstract

The water exchange between the sea and a lagoon or bay through an inlet due to tides is a classical topic that has been investigated in a large number of studies (Keulegan, 1967; O’Brien and Dean, 1972; O’Brien and Clark, 1974; Escoffier, 1977). In this paper, a simple semi-analytic model of the flow induced by tides through an inlet connecting the sea to a lagoon or bay is developed. The model is employed to derive explicit expressions for key parameters associated with inlet flows such as bay water level amplitude, tidal prism, maximum inlet velocity, and mixing (retention) time. Also, the inlet flow model is combined with a sediment transport model to determine the conditions for equilibrium as well as the evolution of the inlet cross-sectional area towards equilibrium or closure.
Original languageEnglish
Number of pages2
DOIs
Publication statusPublished - 2018
Event36th International Conference on Coastal Engineering (ICCE) - Baltimore, United States
Duration: 2018 Jul 302018 Aug 3

Conference

Conference36th International Conference on Coastal Engineering (ICCE)
Abbreviated titleICCE 2018
Country/TerritoryUnited States
CityBaltimore
Period2018/07/302018/08/03

Subject classification (UKÄ)

  • Water Engineering

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