Whitley - Management Strategies Flashcards
Mangawhai-Pakiri
Aukland accounts for …….% of the country GDP
35%
Mangawhai-Pakiri
2015 saw a record ……million foreign visitors.
2.5 million
Mangawhai-Pakiri
Nearshore dredging on the …..km long coastline between Mangawhai and Pakiri has operated for over ……..years.
20km
70 years
Mangawhai-Pakiri
Mining ended at Mangawhai in ……….., it has continued at Pakiri beach.
2005
Mangawhai-Pakiri
Deposited during the …….., sand it a non-renewable resource on the Mangawhai-Pakiri coastline.
Holocene
Mangawhai-Pakiri
Beaches starved of sediment have become ……. and ……… and are therefore less effective at absorbing waves.
wider and flatter
Mangawhai-Pakiri
In 1978 storms caused a …… metre breach at the base of Mangawhai spit. This and a second breach altered tidal currents which lead to the sedimentation of Mangawhai ………..
28m breach
Sedimentation of Mangawhai’s harbour.
Mangawhai-Pakiri
……..ridges are undercut by wave action, developing steep seaward-facing ……..
Foredune
Scarps
Mangawhai-Pakiri
Long term retreat by the end of the century is estimated at ……m and the width of the coastal zone susceptible varies from ……m to 111 metres
35m retreat
46m susceptible zone.
Sandbanks Dorset
A large no. commercial properties built on it. Incl …………Hotel and the ……. Hotel.
Sandbanks Hotel and Haven Hotel
Sandbanks Dorset
It is estimated that if no management strategies are applied, £……. million of damage will be done to residential properties in the next 20 years.
£18 million worth of damage in next 20 years.
Sandbanks Dorset
Without the imposition of Rock Groynes along the sandbanks beach, erosion rates would be …..metres per year.
1.6 metres per year.
Sandbanks Dorset
Rainbowing is an expensive process, However a recent trial of dumping sediment dredged from the harbour just offshore is much cheaper at only £……./m3
£3/m3
In total, over …… million m3 of sediment has been added to Poole Harbour beaches.
3.5 million m3 of sediment.
