An Artificial Perched-Gravel Beach as a Shore Protection Structure

by Mark S. Lorang, Oregon State Univ, Corvallis, United States,



Document Type: Proceeding Paper

Part of: Coastal Sediments

Abstract:

Gravel beaches provide the backshore of coastal environments with a protective buffer from wave erosion. A case study is presented of the conceptual design and utility of an artificial perched gravel beach used to stabilize an eroding backshore. Boulders and cobbles were used as a stable platform to perch beach gravels above the previously eroding profile. A longshore exchange of gravel within the beach compartment was incorporated into the conceptual design. The structure has performed successfully during the three year monitoring periods as exemplified by the lack of backshore erosion and the maintenance of the perched profile.

Subject Headings: Erosion | Coastal management | Gravels | Beach protection and nourishment | Beach profiles | Shores | Coastal protection structures

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