Summary
AQA A level Geography summary notes: Coasts
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Coasts as systemswash one coast thepartoflandadjoiningornearthesea
ffhffffgf Input materialenergymovingintothesystemfromoutsidethesystem egwin
areafromwaves
urfzone breaking Output materialenergymovingoutofthesystemfrominsidethesystem egtid
z
toswash one
waves
eakerzonetheareawhere Energy power ordrivingforce e.gflowingwatergravity
Leathfobreak
storescomponents apartofthesystemcomponentsmakeupthesystem
e gbeachsanddunessediment
Flows transfers linksbetweendifferentcomponentsin a system
e gmassmovementlongshoredrift
Positivefeedback amplifiesoneffectofthechange producesinstability
Negative
feedback
isokeffectfilechangeproducesstability
Dynamicequilibrium Iiiii.it iiiiiipii iiijii's
ninmiis
e g constructive destructivewaves
Cliffbarrier
5 ff fftfm.iesanddunes
i
watermark
Foreshorehightolowwatermark i highwayman
Inshore lowwatermark
toareanotaffectedby
water
Offshoreareanotaffected
Eggadhugh
bycoastalprocesses
watermarktowavesbreaking
Nearshore high
,24 01 24 Coastal processes
YKfffesmafimmames.su warm t r cold
gradient
Occurwhen a gapneedsto befilleddue to air rising andsinking
Formedduetowind
Wind themovementof air fromhightolowpressure areas
greaterpressuredifference strongerwind
i
1F.inwavenrgyT
Coastaltype formation
Windduration
Fetch
Fetch distanceof a wavefromformation to breakdown
IÉ
Tj
Erosion deposition
Erosionallandforms
Stretchesof Atlanticfacingcoasts
t.IS g
Deposition erosion
Depositionallandforms
Coastshelteredfromlargewaves
EE.it k
, Waverefraction the distortionof wavefronts astheyapproach
an indentedshoreline
Currents permanent or seasonalmovementofsurface waters
Prevailingwind dominantwind
Longshore drift whenwavesreachthecoastline at an angle and
the backwashgoesstraightback
Destrucives
formedfromstorms waves
Highplungingwaves Longwavelength
Shortwavelength strongswash
Strongbackwash Beachgain
Steepbeachprofile
Eirene
Whenthere is a dipin thebeachandthere is a highwavefrequen
whichcreates a poolofwater ontheshorethatcannotdrainaway
Waterhas todrainawayunderincomingwaveswhichcreates a Stron
currentgoingout to sea
iTater ispushed
YLm
awayfromthecoastalwindsanddeeper
coldernutrientrichwaterrisesupbeneathtoreplace it
Creates a lot ofbiodiversity
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