Geo-Marine Letters

, Volume 21, Issue 4, pp 226-235

First online:

Sediment transport pattern at the Barra Nova inlet, south Portugal: a conceptual model

  • Yann BalouinAffiliated withUMR 5805-CNRS, Department of Geology and Oceanography, University of Bordeaux Email author 
  • , Hélène HowaAffiliated withUPRES EA 2644, University of Angers

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The Barra Nova inlet, in south Portugal, is known to migrate progressively southeastwards under wave action. The morphodynamics of this system during a representative year suggests that this long-term evolution is dependent on a seasonal behavior of the tidal inlet which can be described through a three-stage model of post-storm, transition and extended fair-weather conditions. Processes involved in this evolution indicate that the historical migration of the Barra Nova is not dependent on the longshore drift forcing constricting the channel on the updrift coast, but rather on the adjustment of the system to a major erosion of the downdrift coast during short storm events.