Open Access Open Access  Restricted Access Subscription or Fee Access

Guidelines Based on Physical and Numerical Modeling Studies for Jetty Spur Design at Coastal Inlets

William C. Seabergh, Zeki Demirbilek, Lihwa Lin


A jetty spur is a relatively short structure that extends from the beachside of a jetty and diverts sediments from entering a navigation channel. A series of physical model laboratory tests with waves and currents was conducted in that varied spur length, spur crest elevation relative to the jetty structure, and spur orientation. Wide and narrow breaker zones were simulated. These experiments were augmented with numerical modeling that coupled waves, depth-averaged current, sediment transport, and morphology change at an inlet. Results indicated that a submerged spur was as effective as a surface-piercing structure in deflecting the seaward-moving current along the jetty, potentially saving construction and maintenance costs. Also it was noted that if the angle of the spur was such that the approaching waves broke initially at the seaward end and progressed breaking in an upcoast direction along the spur face, the ability to deflect a current moving along the jetty axis was enhanced. Recommendations for jetty spur location, elevation, length and angle are discussed.


Jetty Spur, Physical Modeling, Numerical Modeling, Inlets and Navigation Channels, Sediment Transport, Morphological Change

Full Text:


Disclaimer/Regarding indexing issue:

We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information.