Pevensey Bay Flashcards
how was the natural shinge barrier at pevensey created
natural processes associated with sea level rise and subsequent wave and longshore drift action from west to east
What is Pevensey Bay
on the east sussex coast, occupying a low-lying area of softer sediment between sandstone geology to the east at Hastings and chalk of the South Downs to the west
what is the location of pevenseys natural shingle barrier
extends from 9km between eastbourne and bexhill
despite changes in the coastline, what has the shingle bank remained
a natural defence against coastal flooding
why is the management of the coastline challenging
modern-day settlements require the coastline remains in a relatively fixed position
what is causing the coastline to change shape
continuing sea level rise, wave action and longshore drift move sediment into the littoral zone and increasing storm frequency
what is becoming difficult to balance
wishes of the residents, economic coasts and benefits and sustainability
what is currently protected by sea defences
-the permanent flooding of a 50km sq area including pevensey bay, normans bay, langley, westham and parts of pevensey
-10000 properties
-recreational and commercial sites
-A259 coast road and railway line from hastings to portsmouth
-two nature researves and and SSSI wetland site
-numerous livestock and arable farms
what is the net loss of the beach each year
25,000 m cubed
what is the biggest risk in the area
flooding
what are the most effective defences in the area
soft man made defences constructed of sand and shingle they absorb and break up wave power
how is the management of sea defneces at pevensey unique
organised and maintained by the countrys first public private partnership coastal management scheme
describe the ppp scheme
began in 2000 after a realisation in 1997 that a 1 in 20 year storm event could breach the shingle beach. the contract was rewarded to a consortium called pevensey coastal defence ltd to run for 25 years with an initial budget of 30 mil
