Coastal Landscapes and Processes Flashcards

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1
Q

3 Types of weathering

A

Mechanical (freeze-thaw)
Chemical (acid rain)
Biological

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2
Q

4 Types of Erosion

A

Hydraulic action
Abrasion
Attrition
Solution

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3
Q

3 Types of mass movement

A

Slumping
Sliding
Rock falls

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4
Q

4 Types of transportation

A

Traction
Saltation
Suspension
Solution

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5
Q

Fetch

A

The distance of open water the wave has travelled

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6
Q

Constructive wave characteristics

A

-Lower height
-Less energy
-Less frequent
-Strong swash, weak backwash

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7
Q

Destructive wave characteristics

A

-Taller height
-More energy
-More frequent
-Weak swash, strong backwash

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8
Q

Discordant coast definition

A

Bands of different types of rock perpendicular to the coastline

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9
Q

Concordant coastline definition

A

Bands of different types of rock parallel to the coastline

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10
Q

Joint

A

Vertical crack caused by sediment drying out or stress on the rock

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11
Q

Fault

A

Formed by stress or pressure on rock causing joint to move

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12
Q

3 Ways UK climate affects coastline

A

Storms, seasonality, prevailing wind direction

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13
Q

2 Coastal deposition landforms

A

Spits and bars

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14
Q

Spit definition

A

Long and narrow ridge of sediment with one end attached to land and the other sticking out into the sea

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15
Q

Bar definition

A

Ridge of sediment across the entrance of a bay or river mouth

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16
Q

4 Ways humans use the coast

A

Urbanisation
Tourism
Industry
Agriculture

17
Q

Hard engineering definition

A

Man-made structures designed to stop erosion

18
Q

Soft engineering definiton

A

Sustainable, natural methods to reduce the rate of erosion

19
Q

4 Types of hard engineering

A

Sea wall
Groynes
Rock armour
Gabions

20
Q

Sea wall
Def, ad, dis

A

Concrete wall built at the foot of the cliff
Ad- effective, provides walkway
Dis- expensive, unnatural

21
Q

Rock armour
Def, ad, dis

A

Large boulders placed at foot of the cliff
Ad- easy to maintain, quick to install
Dis- high transportation costs, doesn’t fit in natural landscape

22
Q

Groynes
Def, ad, dis

A

Structures built at right angles to coast
Ad- quick to build, bigger beaches
Dis- unsightly, have further impacts down coast

23
Q

Gabions
Def, ad, dis

A

Rocks in mesh cages
Ad- absorbs wave energy, cheap
Dis- unnatural, not very strong

24
Q

3 Types of soft engineering

A

Beach replenishment, dune stabilisation, managed retreat

25
Q

Beach replenishment
Def, ad, dis

A

Sand added to a beach to make it wider
Ad- attracts tourists, cheap to maintain
Dis- causes disruption to beach users, needs constant maintenance

26
Q

Dune stabilisation
Def, ad, dis

A

Planting shrubs and bushes to stabilise dunes
Ad- natural, cheap
Dis- takes time to grow, areas are fenced off

27
Q

Managed retreat
Def, ad, dis

A

Controlled flooding of coastal areas
Ad- cheap, provides habitats for animals
Dis- owners need compensation, land is lost