Wave energy dissipation by intertidal sand waves on a mixed-sediment Beach

Adams, P.; Ruggiero, P.

Abstract:

Within the surf zone, the energy expended by wave breaking is strongly influenced by nearshore bathymetry, which is often linked to the character and abundance of local sediments. Based upon a continuous, two year record of Argus Beach Monitoring System (ABMS) data on the north shore of Kachemak Bay in southcentral Alaska, we model the enhancement of wave energy dissipation by the presence of intertidal sand waves. Comparison of model results from simulations in the presence and absence of sand waves illustrates that these ephemeral morphological features can offer significant protection to the backing beach and sea cliff through two mechanisms: (1) by moving the locus of wave breaking seaward and (2) by increasing energy expenditure associated with the turbulence of wave breaking. Copyright ASCE 2006.

Genre:

Conference Paper

ProdID:

70028803

Citation Author:

Adams, P.; Ruggiero, P.

Citation Contributing Office:

Citation Datum:

Citation Day:

Citation Edition:

Citation Editor:

Citation End Page:

Citation Issue:

Citation Keywords:

Citation Language:

English

Citation Larger Work Title:

Coastal Dynamics 2005 - Proceedings of the Fifth Coastal Dynamics International Conference

Citation LatN:

Citation LatS:

Citation LonE:

Citation LonW:

Citation Month:

Citation No Pagination:

Citation Number Of Pages:

Citation Online Only Flag:

Citation Phsyical Description:

Citation Projection:

Citation Public Comments:

Citation Publisher:

Citation Series:

Citation Series Code:

Citation Series Number:

Citation Search Results Text:

Wave energy dissipation by intertidal sand waves on a mixed-sediment Beach; 2006; Conference Paper; Coastal Dynamics 2005 - Proceedings of the Fifth Coastal Dynamics International Conference; Adams, P.; Ruggiero, P.