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Sediment Budget and Equilibrium Beach Profiles Applied to Renourishment of an Ebb Tidal Delta Adjacent Beach, Mt. Maunganui, New Zealand

G. A. Foster, T. R. Healy and W. P. de Lange
Journal of Coastal Research
Vol. 10, No. 3 (Summer, 1994), pp. 564-575
Stable URL: http://www.jstor.org/stable/4298253
Page Count: 12
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Sediment Budget and Equilibrium Beach Profiles Applied to Renourishment of an Ebb Tidal Delta Adjacent Beach, Mt. Maunganui, New Zealand
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Abstract

An ebb tidal delta adjacent beach was nourished by placement of dredged material in water depths of 4-7 m below Chart Datum. The beach and nearshore were subsequently monitored with accurate integrated beach-nearshore surveys along 7 transects. All the nourishment material could be accounted for by onshore movement resulting in 89 m3 $m^1$ of accretion within 15 months of placement. Application of the Dean's Equilibrium Beach Profile model, before, during and after disposal, indicated that before nourishment the beach-nearshore profiles exhibited a deficit of sediment throughout their length. After nourishment, the profiles adjusted towards the equilibrium profile predicted by the model.

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