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

Authors

  • G. A. Foster
  • T. R. Healy
  • W. P. de Lange

Keywords:

Beach nourishment, volume analysis, Dean's Equilibrium Reach Profiles

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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Published

1994-07-20

Issue

Vol. 10 No. 3 (1994): Journal of Coastal Research

Section

Articles

License

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