Beach Renourishment by Eric Bird, Nick Lewis

By Eric Bird, Nick Lewis

Beach renourishment is the recovery of seashores which were depleted. The textual content offers with the resources of seashore sediment in addition to the reasons and ordinary responses to seashore erosion, sooner than dialogue of seashore renourishment.

Some of the 1st documented renourishment tasks have been undertaken within the early 1900’s at the east coast of the USA. a number of nations have on the grounds that renourished shorelines, relatively up to now few many years. so much initiatives were within the usa, the uk, a few eu nations and Australia. those are reviewed and adventure from quite a few seashore renourishment initiatives used for dialogue of the next topics:

1. the necessity for initial investigations
2. resources of sediment for seashore renourishment
3. equipment of seashore renourishment
4. layout considerations
5. tracking alterations after seashore renourishment
6. overview of performance
7. Modelling of seashore renourishment
8. seashore renourishment for coast protection
9. Environmental impacts
10. bills and benefits
11. reaction of renourished seashores to a emerging sea level

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Example text

There is bypassing, where sediment is conveyed from a sector that has prograded alongside an obstacle such as a breakwater, a river mouth or a tidal inlet, along the coast to replenish a beach depleted downdrift. There is recycling (Sect. 4, p. 66), whereby beach losses due to longshore drift are made good by bringing back the sediment. There is nearshore renourishment based on the expectation of shoreward drift, and backpassing, which is analogous to longshore recycling in that it brings back sediment lost seaward from a beach.

J Coast Res 13:1050–1063 Wang P, Roberts TM, Dabees M, Horwitz MH (2011) Beach changes associated with active 2009–2010 El-Nino winter along the west-central Florida barrier islands. In Wang P, Rosati JD, Roberts TM (eds) Proceedings of Coastal sediments 2011. World Scientific, Singapore, pp 1229–1242 Chapter 3 Responses to Beach Erosion Abstract Prior to considering beach renourishment, it is important to understand the potential alternative means of managing beach erosion, and consider beach renourishment in the context of one of many responses.

G. for aggregate or building purposes), but this is less likely where the sediment contains clay, chalk or shelly debris, which are not suitable for construction but can be used for beach fill. In the United Kingdom, many of the beach recharge projects have used sediment from the seafloor of the continental shelf. Licensed aggregate dredge areas are leased by the Crown Estate to aggregate supply companies along with a permitted annual tonnage. It was estimated in 2009 that potentially workable resources of UK offshore sand and gravel exceeded 800 million m3 (CIRIA 2010).

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Categories: Oceanography