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Apr 26, 2012
Dynamics of an Emergency Jetty Repair at Coos Bay, Oregon
Authors: Jessica R. Hays, Hans R. Moritz, and Heidi P. MoritzAuthor Affiliations
Publication: Coastal Structures 2003
Abstract
The jetties and surrounding dynamics at the entrance of Coos Bay, Oregon form a unique and complex system that requires a systematic and comprehensive approach to its management. The deterioration of the north and south jetties due to channel deepening and movement, erosion of shoal foundations, lack of maintenance, and an increase in wave climate caused a breach of the north jetty at its root in November 2002. The emergency repair of the north jetty that followed provides an example of how the features and individual processes at work in an area can and must be incorporated into the successful design and maintenance of its structures. The evolution of the breach at Coos Bay can be used as a learning tool to show that it is imperative to understand the sediment pathways and their effect on navigation structures in order to maximize the efficiency and durability of a jettied entrance. This paper will review the conditions that led to the jetty breach, the emergency repair methods used at the north jetty, and the issues and concerns that will influence the decisions made about the future maintenance of the navigation entrance at Coos Bay.
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© 2004 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Jessica R. Hays
US Army Corps of Engineers, Portland District, Attn: CENWP-EC-HY, PO Box 2946, Portland, OR, 97208-2946
Hans R. Moritz
US Army Corps of Engineers, Portland District, Attn: CENWP-EC-HY, PO Box 2946, Portland, OR, 97208-2946
Heidi P. Moritz
US Army Corps of Engineers, Portland District, Attn: CENWP-EC-HY, PO Box 2946, Portland, OR, 97208-2946
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.