When is scraping the coast 2011

Brookings Distinguished Visiting Fellow Ezra Suruma provided introductory remarks and moderated the discussion. After the program, panelists took audience questions. To subscribe or manage your subscriptions to our top event topic lists, please visit our event topics page. Past Event. Ivory Coast on the Brink. O-T Lounge. Next Page ». Page 1 2. Page 1 of 2. How many of you Baws Scrapin the Coast this weekend?

Replies Options Top. Replies 0. I thought scrapin the coast was for low riders, not cheesy jacked up mall mashers. Replies 1. I think it has transformed into any kind of customized non-classic. Beaches consisting of coarse sand or gravel sometimes form a beach berm a nearly horizontal plateau on the beach face or backshore, formed by the deposition of beach material. This berm can be removed and placed on the backshore or the foot of the dunes, which is understood as beach scraping.

The purpose of beach scraping is the strengthening of the upper part of the beach. In case of storms, this material will be firstly eroded and thus protect dune or cliff systems. It differs from beach nourishment because new volumes of sand are not introduced to the system replacing eroded material. Instead, sand is moved from one location on the beach to another Kratzmann et al.

This technique is used to move small volumes of accumulated sand to the upper beach. It is important to remove only that quantity of sand that can be replenished naturally. This is why beach scraping should rather be executed at beaches mainly exposed to seasonal erosion.

For beaches exposed to long-term erosion, this measure seems not feasible, because in this situation the measure would not contribute to the overall stability of the beach profile. If undertaken in situations where sand has been accumulated over a period of time repeatedly, the technique can increase the volume of the dry beach, providing some mitigation for short-term erosion.

Harrington Comparing to other coastal defense measures like building a dyke or groynes , this approach has relatively low derogation on the ecological system. But the relocation of sand with heavy machines will always have an impact on the ecosystem. Therefore a environmental assessment before the measure is undertaken und a monitoring of the impacts during afterwards should be mandatory. In New Brighton Beach this assessment of the impacts of the measure on macroinverrtebrates were undertaken see Smith et al.

The results of the study show that the beach scraping had no on the biodiversity and assemblage patterns of beach infauna. The authors assume that the primary reasons for the lack of impact are likely related to the high energy wave environment and high natural levels of dynamism at New Brighton beach, and the fact that deposition of scraped sand did not cause major changes to beach granulometry.

This may lead to the conclusion that at beach with a natural high dynamics the ecosystem is already adapted to drastic changes. Beach scraping can only take place at sandy beaches, which are often frequently used by tourists and thus providing a source of income for neighboring communities.

A mechanical restructuring of the beach may disturb recreational activities. Therefore it is recommended to undertake the measure in times of low touristic activity if possible.