Field measurements of net sediment flux from individual swashes on a sandy beach

C Blenkinsopp, I.L. Turner, Gerd Masselink, P.E. Russell

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Abstract

The shoreline along sandy beaches is located at a unique position on the earth’s surface where marine and terrestrial
processes converge. The swash zone distinguishes the landward-most reach of wave action. Field observations from
this shallow and highly energetic region reveal that individual waves regularly deposit or remove hundreds of
kilograms of sand per meter width of beach. Such high rates of sand movement represent several centimeters of bedlevel change and far exceed the underlying pace of beach evolution. Relatively large morphological changes caused by
single swashes might suggest that very rapid beach erosion or accretion is a common occurrence. The contrasting
reality shown by these new observationsis that beaches generally exhibit a state of dynamic equilibrium.
Original languageEnglish
Title of host publicationProceedings of Coastal Dynamics 2009: Impacts of Human Activities on Dynamic Coastal Processes
EditorsM Mizuguchi, S Sato
PublisherWorld Scientific
Number of pages10
ISBN (Electronic)9789814466950
ISBN (Print)9789814282468
DOIs
Publication statusPublished - 30 Sep 2009
EventCoastal Dynamics 2009 - Impacts of Human Activities on Dynamic Coastal Processes - Tokyo, Japan
Duration: 7 Sep 201111 Sep 2011

Conference

ConferenceCoastal Dynamics 2009 - Impacts of Human Activities on Dynamic Coastal Processes
CountryJapan
CityTokyo
Period7/09/1111/09/11

Keywords

  • swash
  • sediment transport
  • morphodynamics
  • beachface
  • bed-levels

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  • Cite this

    Blenkinsopp, C., Turner, I. L., Masselink, G., & Russell, P. E. (2009). Field measurements of net sediment flux from individual swashes on a sandy beach. In M. Mizuguchi, & S. Sato (Eds.), Proceedings of Coastal Dynamics 2009: Impacts of Human Activities on Dynamic Coastal Processes World Scientific. https://doi.org/10.1142/9789814282475_0030