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Morphological response characteristics of the Zoutkamperlaag, Frisian inlet (The Netherlands), to a sudden reduction in basin area
Biegel, E.; Hoekstra, P. (1995). Morphological response characteristics of the Zoutkamperlaag, Frisian inlet (The Netherlands), to a sudden reduction in basin area, in: Flemming, B.W. et al. (Ed.) Tidal Signatures in Modern and Ancient Sediments. Special Publication of the International Association of Sedimentologists, 24: pp. 85-99
In: Flemming, B.W.; Bartholomä, A. (Ed.) (1995). Tidal Signatures in Modern and Ancient Sediments. Special Publication of the International Association of Sedimentologists, 24. Blackwell Science: Oxford. ISBN 0-86542-978-2. 358 pp., more
In: Special Publication of the International Association of Sedimentologists. Blackwell: Oxford; London; Edinburgh; Melbourne. ISSN 0141-3600, more

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Keyword
    Marine

Authors  Top 
  • Biegel, E.
  • Hoekstra, P.

Abstract
    The Frisian inlet which separates the barrier islands of Ameland and Schiermonnikoog bifurcates into two smaller inlets that are separated by a supratidal shoal. The two smaller inlets are the Pinke and the Zoutkamperlaag inlets. In 1969 the closure of the Lauwers Sea reduced the flood tidal basin of the Zoutkamperlaag system. The change in tidal dynamics modified the equilibrium between the inlets and the basin tidal prism. In this study, morphological changes occurring since 1969 in the Zoutkamperlaag and its ebb-tidal delta as well as along the coast of the adjacent island of Schiermonnikoog and in the flood-tidal basin are investigated. The ebb-tidal delta has gradually reduced in size while depositional processes were dominant in the flood-tidal basin, reducing channel cross-sections. Empirical relationships between ebb and flood volumes and the cross-sectional areas of the channels show that the channels are adjusting towards a new equilibrium. This study suggests that exponential models classically used to describe the morphological adaptation during disequilibrium are not generally applicable. There is strong spatial variability with respect to the cross-sectional behaviour, for example due to autonomous processes in the flood-tidal basin. In the inlet throat itself, the exponential model appears to be adequate.

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