Sand Accounting Methodology for Barrier Island Sediment Budget Analysis

by G. F. Oertel, Old Dominion Univ, United States,
J. C. Ludwick, Old Dominion Univ, United States,
D. L. S. Oertel, Old Dominion Univ, United States,



Document Type: Proceeding Paper

Part of: Barrier Islands: Process and Management

Abstract:

A wide variety of theoretical and analytical techniques are used for estimating island budgets, but surveying has provided the most accurate means of evaluating change. To make comparisons between volume-change rates, data were normalized into unit increments of time and shoreline length. Resultant rates are expressed as cubic meters per meter of shoreline per month. A scale of change-rate conditions is proposed for describing and comparing various reaches of shore. At Sea Island, moderate to very severe erosional conditions only occurred along relatively short reaches of shore, during stormy periods. Over relatively long time intervals, erosional and accretional conditions have 'averaged-out' resulting in long-term stable or mild conditions of volume change for the island as a whole.

Subject Headings: Beach accretion | Sediment transport | Islands | Coastal management | Shoreline protection | Erosion | Budgets

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