Coastal Landscape Management, Sandbanks Flashcards
Who manages the Dorset Sandbanks
Sandbank Peninsula is managed by - Poole Harbour Commissioners - Poole Borough Council - Environment agencies - Two Bays Shoreline Management Plan
Why do the sandbanks need to be managed?
Sandbank peninsula is a significant part of the coastal landscape system and needs management for many reasons -
Large amount of high value commercial properties - Sandbanks hotel - significant employment
Residential properties are in high demand - many luxury apartments over 2Million
Beach is a major tourist attraction - Blue flag for water quality
Provides protection and shelter from waves for Poole Harbour - popular for water sports - harbour also home to numerous yacht clubs
LongShore Drift of beach sediment could cause the harbour entrance to become shallow - used by cross-channel ferries
Climate change - sea levels rise by 0.6m in 100 years - causes flooding and a breach of the peninsula - 18million of damage will ocour in 20 years
What management strategies have been put in place and what impacts have they had?
In order to maintain a deep and wide beach rock groynes have been constructed - minimises the movement of sediment along the beach at sandbanks by LSD - restricts sediment from entering the harbour and absorbs wave energy - without them erosion rates of 1.6m per year.
Beach recharged - offshore sand is dredged and sprayed onto the beach - rainbowing - costs £20/m3 - cheaper alternative of dumping sediment just offshore rather than spraying is being put in place - costs £3/m3 - overall 3.5 million m3 of sand has been added to the Poole Bay beach - excellent example of management working with nature.
