Dune Erosion Management: a Cost Benefit Analysis

by R. C. Steijn, Univ of Twente, Enschede, Netherlands,
H. Wind, Univ of Twente, Enschede, Netherlands,

Document Type: Proceeding Paper

Part of: Coastal Zone '93


A method is presented and illustrated to establish economically justifiable coastal protection measures to reduce storm damage. This method can be used in the initial design stage of a project and gives the opportunity to handle uncertainty of the various types of information. The method is based on a probabilistic description of the rate of dune erosion. Economic loss caused by this erosion is therefore also a stochastic parameter. Costs to reduce these potential losses are then compared with the potential damage. The method is applied to an example case in which buildings are threatened by dune erosion while sand replenishment schemes are considered to reduce this threat.

Subject Headings: Dunes | Erosion | Benefit cost ratios | Consolidated soils | Risk management | Storms | Uncertainty principles | Stochastic processes

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