Holderness Flashcards

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1
Q

How long is the coastline?

A

61km

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2
Q

How far does the coastline stretch (to and from where)?

A

From Flamborough Head (headland) to Spurn Head (Spit)

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3
Q

How much land is lost to the sea per year?

A

1.8 average

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4
Q

What has the rate of erosion at Great Cowden been in recent years?

A

10m per year

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5
Q

What are the 4 main reasons for rapid erosion?

A

Easily eroded rock type.
Naturally narrow beaches.
People worsening situation.
Powerful waves.

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6
Q

How has an easily eroding rock type led to rapid erosion?

A

Cliff made up of soft Boulder clay which easily erodes and likely to slump when wet - cliff collapse.

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7
Q

How have narrow beaches led to rapid erosion?

A

Beaches slow waves reducing erosive power. Narrow beaches give less protection to coast.

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8
Q

How has people worsening the situation led to rapid erosion?

A

Groynes built at Mappleton stopped material being transported further down coast which makes beaches narrower and more easily eroded in other areas.

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9
Q

How have powerful waves led to rapid erosion?

A

Holderness faces prevailing wind bringing waves from north east, from Antarctica. Waves increase in power over long fetch and coast battered by highly erosive waves.

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10
Q

What could be the impact on homes near the cliff?

A

E.g. Skipsea at risk of collapsing into sea.

Property prices fallen sharply.

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11
Q

How has accessibility to some settlements been affected?

A

Due to roads near cliff top as risk of collapsing into sea - e.g. Southfield Lane running between Skipsea and Ulrome closed.

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12
Q

What impact has it had on businesses?

A

At risk from erosion so people lose jobs

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13
Q

What happened to a caravan park (business)?

A

Seaside caravan at Ulrome losing an average of 10 pitches a year.

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14
Q

What happened to a gas terminal and why is it significant?

A

Terminal at Easington only 25m from cliff edge. Terminal accounts for 25% of UK gas supply.

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15
Q

How much farmland is lost and what effect has this had?

A

80,000m squared of farmland lost per year with huge effects on farmers livelihoods

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16
Q

What is the environmental impact of coastal erosion?

A

SSSIs threatened. E.g. Lagoon at Easington separated from sea by sand and shingle. If narrow bar eroded, lagoon connects to sea and is destroyed.

17
Q

How much of the coast has been protected by hard engineering?

A

11.4km

18
Q

What techniques have been used at Bridlington?

A

4.7km sea wall and wooden groynes protect coast from erosion and flooding.

19
Q

What techniques have been used at Hornsea?

A

Sea wall, wooden groynes and rock armour protect village from erosion and flooding.

20
Q

What techniques have been used at withernsea?

A

Groynes create wider beach.

Sea wall and some rock armour in front of wall.

21
Q

What techniques have been used at Mappleton?

A

2 Rock groynes built 1991 and cost £2 million.

Built to protect village and coastal road from erosion and flooding.

22
Q

What techniques have been used at Spurn Head?

A

Eastern side protected by groynes and rock armour. This also protects Humber Estuary behind Spurn Head.

23
Q

What is the issue with groynes?

A

They protect local area but cause narrow beaches down coast which increases erosion there.

E.g. Cowden farm, south of Mappleton, is at risk of falling into sea.

24
Q

What are forming between protected areas?

A

Bays. Protected areas becoming headlands which are eroded more heavily. Means maintaining defences in protected areas becoming more expensive.