By Eric Bird, Nick Lewis
Beach renourishment is the recovery of seashores which have been depleted. The textual content offers with the resources of seashore sediment in addition to the explanations and ordinary responses to seashore erosion, sooner than dialogue of seashore renourishment.
Some of the 1st documented renourishment initiatives have been undertaken within the early 1900’s at the east coast of the us. numerous nations have due to the fact renourished shorelines, really in the past few a long time. so much tasks were within the usa, the uk, a few ecu international locations and Australia. those are reviewed and adventure from quite a few seashore renourishment tasks used for dialogue of the next topics:
1. the necessity for initial investigations
2. assets of sediment for seashore renourishment
3. equipment of seashore renourishment
4. layout considerations
5. tracking adjustments after seashore renourishment
6. review of performance
7. Modelling of seashore renourishment
8. seashore renourishment for coast protection
9. Environmental impacts
10. expenditures and benefits
11. reaction of renourished seashores to a emerging sea level
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Seashore renourishment is the recovery of shores which have been depleted. The textual content offers with the resources of seashore sediment in addition to the motives and ordinary responses to seashore erosion, ahead of dialogue of seashore renourishment. a number of the first documented renourishment tasks have been undertaken within the early 1900’s at the east coast of the us.
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Extra resources for Beach Renourishment
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). 3). This beach was renourished in 1974 with coarse sand and gravel dredged from the sea floor off the Isle of Wight and dumped in a zone 450 m off the Bournemouth shore.
Report No. RM2289_LJ5518. Port of Melbourne Corporation Christiansen C, Christoffersen H, Dalsgaard J, Nornberg P (1981) Coastal and nearshore changes correlated with die-back in eel grass (Zostera marina). Sediment Geol 28:163–173 28 2 Causes of Beach Erosion Douglas BC, Kearney MS, Leatherman SP (2000) Sea level rise: history and consequences. International geophysics series, vol 75. Academic Press, London El-Asmar HM, White K (2002) Changes in coastal sediment transport processes due to construction of new Damietta Harbour, Nile Delta, Egypt.
Erosion on Bramston Beach in Queensland, was offset by bringing in 6,000 m3 of coarse sand quarried from old beach ridges (with the advantage that it had previously been a beach sediment) a short distance inland and delivered to the shore by lorries. The use of land-based sources of sediment for beach renourishment may lead to problems with lorry traffic. The cost of using such sediment for beach renourishment may also be too high where there are competing demands for sand and gravel extracted from quarries for other purposes such as road making or concrete aggregate.