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Groyne

About: Groyne is a research topic. Over the lifetime, 397 publications have been published within this topic receiving 4549 citations. The topic is also known as: groin & Breakwater.


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13 Mar 1998
TL;DR: In this article, the authors provide geomorphological guidance over the introduction of "habitat enhancement" features for fisheries improvement which is an expanding area of interest throughout the region.
Abstract: This report seeks to briefly provide geomorphological guidance over the introduction of 'habitat enhancement' features for fisheries improvement which is an expanding area of interest throughout the region. This document is a primary attempt to draw together the salient details from the large quantity of literature published in recent years with reference to boulder introduction and to groyne/deflector placement in NW rivers. Secondly the potential introduction of such features is assessed, with reference to the proposed works at Carhead on the Eden.

1 citations

Journal ArticleDOI
TL;DR: In this paper, a hindcast of the Volta river mouth sand spit was performed using the 2DH morphological model XBeach to study the evolution of the sand spit.
Abstract: Groynes were constructed west of the Volta river mouth sand spit in Ghana to mitigate the local average beach retreat of 6 m/year. Even though severe swell events occurred during the construction of the first couple of groynes, the sand spit retreat of about 150 m over less than 1 year was surprising. An in-depth analysis was done by performing a hindcast over that year with the 2DH morphological model XBeach. It qualitatively reproduced the sand spit evolution as measured in situ. The governing processes of the severe erosion of the sand spit, in addition to the effect of the groynes, were identified to be a longshore sediment transport gradient and differences in overwash occurrence. A second hindcast, without groynes, has shown that the groynes were not the main cause. It also demonstrated that the beach, which was to be protected, has clearly benefitted from the construction of the groynes.

1 citations

Journal ArticleDOI
14 Apr 2015
TL;DR: In this article, the authors evaluated the performance of existing coastal protection structure to restrain the rate of erosion as a result of the influence of hydrodynamics process and showed that the presence of a groyne in Padang coasts looks already quite effective in defense of the shoreline of the littoral transport direction, however the installation of groins seemingly did not give significant meaning in the addition of the coastline.
Abstract: With the position on the west coast region of Sumatra, Padang beach facing directly to Indian Ocean that have potentially threat by the ocean waves that relatively give effect to changes in the coastline. This study was conducted to evaluating the performance of existing coastal protection structure to restrain the rate of erosion as a result of the influence of hydrodynamics process. Condition that reviewed was in form of distance shoreline as simulation results to initial reference line before. One Line Model was conducted to get shoreline change in each time step calculation. Model consists of two conditions, with the absence of coastal structures and with structure respectively. The simulation result show that potential erosion occurs at Batang Arau river mouth with no protection structure. Large erosion predicted around 59.04 meters from the shoreline position early. With coastal protection, model result obtained sedimentation of 7.33 meters coastline from its initial position. This occurs at a distance of 475 meters from the boundary domain. Modeling results also showed erosion is 18.39 meters at a distance of 250 m from the boundary domain. This is likely due to the limited modeling conditions that without reviewing of littoral transport direction that occurred in perpendicular to the coast. Result study show that the presence of a groyne in Padang coasts looks already quite effective in defense of the shoreline of the littoral transport direction, however the installation of groins seemingly did not give significant meaning in the addition of the coastline.

1 citations

01 Jan 2013
TL;DR: In this article, the effectiveness of transition groynes for the protection of Alappad coast is numerically investigated using the software MIKE 21 and the results reveal predominant longshore transport which favours selection of transition groyne as a coastal protection measure.
Abstract: The effectiveness of transition groynes for the protection of Alappad coast is numerically investigated using the software MIKE 21. The study area comprises of a coastal stretch of 3.5 km along shore and 6.5 km offshore. Results reveal predominant longshore transport which favours selection of groynes as a coastal protection measure. Parametric studies are conducted to reach a suitable configuration of transition groynes that drastically reduces the sediment transport rate especially during monsoon. Design of the proposed groyne field is also presented.

1 citations

Journal Article
TL;DR: Beach nourishment is an engineering used to widen and stabilize an eroding beach by filling abundant sand with or without supporting structures as discussed by the authors, which provides the best protection to coast erosion and has been applied in the coast protection widely in the developed countries since the end of the last century.
Abstract: Beach nourishment is an engineering used to widen and stabilize an eroding beach by filling abundant sand with or without supporting structures.It provides a best protection to coast erosion and has been applied in the coast protection widely in the developed countries since the end of the last century,and has been developing rapidly in recent years.Beach nourishment includes investigation,restoration and replenishment stages,which are mutual complementing and interacting.It's necessary to survey the coastal environment sufficiently to make a design before restoration,whereafter,to consider filling locations,components,quantity and sources of sand,and to emphasize the beach profile monitoring continuously and sand filling regularly during the replenishment.In the eroding coast with strong wave,absent sand and bare rock,groyne or jetty and offshore submerged groin engineering are needed to support this nourishment against the waves in order to maintain the filled sand stability.

1 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202114
202020
201924
201823
201714
201617