Open Access Open Access  Restricted Access Subscription or Fee Access

Performance of a Submerged Reef – A Physical Model Study

Kiran G. Shirlal, Subba Rao, Manu

Abstract


Ocean waves can be destructive as steeper waves, due to their high energy, erode the sandy beaches. If these waves are made to break prematurely and away from the beach and attenuate them, then, beach erosion could be reduced. This can be economically accomplished by a submerged reef suitably designed and constructed at some distance offshore. This paper experimentally investigates the armour stone stability of the submerged reef and influence of its varying distance from shore on ocean wave transmission. A stability equation for a submerged reef has been obtained. It is found that a 0.25m (7.5m) high reef, having a crest width of 0.1m (3.0m) and of constructed with an optimum armour of weight of 30gms (0.81Ton) at a seaward distance of 4m (120m) in a water depth up to 0.4m (12m) can achieve a wave transmission of 51% for the test wave conditions.

Keywords


Reef, Stability, Wave breaking, Wave Transmission, Wave height attenuation, Energy dissipation, Coastal protection

Full Text:

PDF


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. Also: DOI is paid service which provided by a third party. We never mentioned that we go for this for our any journal. However, journal have no objection if author go directly for this paid DOI service.