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Foredune

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Part of the Encyclopedia of Earth Sciences Series book series (EESS)

Synonyms

Beach ridge; Frontal dune; Primary dune; Transverse dune

Definition

A foredune is a shore-parallel dune ridge that forms on the back beach of an ocean, estuary, or bay by aeolian depositional processes (Hesp, 1988; Nordstrom, 1992; Nordstrom and Jackson, 1994).

Description

As part of a dune system, the foredune is located closest to the water body. Vegetation in the backshore plays an important role in the accumulation and retention of sand to form the dune ridge. Plant succession occurs as the dune develops. Foredunes often exhibit different morphologies (from convex ridges to flat terraces) and variable ecological characteristics (Hesp, 1988). As the foredune enlarges, it traps more windblown sand and hence can expand rather rapidly.

There are two main types of foredunes: incipient and established types (Hesp, 2002). Incipient foredunes are new or embryo dunes formed by sand deposition within discrete vegetation (e.g., Ammophila, Ipomoea, and Spinifex) from the immediate...

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  • DOI: 10.1007/978-94-017-8801-4_407
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Bibliography

  • Carter, R. W. G., Bauer, B. O., Sherman, D. J., Davidson-Arnott, R. G. D., Gares, P. A., Nordstrom, K. F., and Orford, J. D., 1992. Dune development in the aftermath of stream outlet closure: examples from Ireland and California. In Carter, R. W. G., Curtis, T. G. F., and Sheehy-Skeffington, M. J. (eds.), Coastal Dunes: Geomorphology, Ecology and Management for Conservation. Rotterdam: Balkema, pp. 57–69.

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  • Hesp, P., 2002. Foredunes and blowouts: initiation, geomorphology, and dynamics. Geomorphology, 48, 245–268.

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  • Hesp, P. A., 1988. Foredune morphology, dynamics, and structures. Journal of Sedimentary Geology, Special Issue on Aeolian Sediments, 55, 17–41.

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  • Nordstrom, K. F., 1992. Estuarine Beaches. London: Elsevier.

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  • Nordstrom, K. F., and Jackson, N. L., 1994. Aeolian processes and dune fields in estuaries. Physical Geography, 15, 358–371.

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Correspondence to Michael J. Kennish .

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© 2016 Springer Science+Business Media Dordrecht

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Kennish, M.J. (2016). Foredune. In: Kennish, M.J. (eds) Encyclopedia of Estuaries. Encyclopedia of Earth Sciences Series. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-8801-4_407

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