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Spatio-temporal variability in accretion and erosion of coastal foredunes in the Netherlands: regional climate and local topography.

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  • معلومة اضافية
    • المصدر:
      Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
    • بيانات النشر:
      Original Publication: San Francisco, CA : Public Library of Science
    • الموضوع:
      Climate* ; Conservation of Natural Resources* ; Ecosystem* ; Geography* ; Spatio-Temporal Analysis*; Netherlands ; Time Factors
    • نبذة مختصرة :
      Depending on the amount of aeolian sediment input and dune erosion, dune size and morphology change over time. Since coastal foredunes play an important role in the Dutch coastal defence, it is important to have good insight in the main factors that control these changes. In this paper the temporal variations in foredune erosion and accretion were studied in relation to proxies for aeolian transport potential and storminess using yearly elevation measurements from 1965 to 2012 for six sections of the Dutch coast. Longshore differences in the relative impacts of erosion and accretion were examined in relation to local beach width. The results show that temporal variability in foredune accretion and erosion is highest in narrow beach sections. Here, dune erosion alternates with accretion, with variability displaying strong correlations with yearly values of storminess (maximum sea levels). In wider beach sections, dune erosion is less frequent, with lower temporal variability and stronger correlations with time series of transport potential. In erosion dominated years, eroded volumes decrease from narrow to wider beaches. When accretion dominates, dune-volume changes are relatively constant alongshore. Dune erosion is therefore suggested to control spatial variability in dune-volume changes. On a scale of decades, the volume of foredunes tends to increase more on wider beaches. However, where widths exceed 200 to 300 m, this trend is no longer observed.
    • References:
      Proc Natl Acad Sci U S A. 2002 Feb 19;99 Suppl 1:2554-60. (PMID: 11875209)
    • الموضوع:
      Date Created: 20140308 Date Completed: 20150221 Latest Revision: 20240314
    • الموضوع:
      20240314
    • الرقم المعرف:
      PMC3946338
    • الرقم المعرف:
      10.1371/journal.pone.0091115
    • الرقم المعرف:
      24603812