Mass Movement Flashcards

1
Q

Where is Aberfan?

A

Wales

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2
Q

How many people died in Aberfan?

A

147 people

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3
Q

How many schoolchildren died in Aberfan?

A

116 schoolchildren

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4
Q

What was the social impact of the Aberfan disaster?

A

Changed the village

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5
Q

What caused the Aberfan disaster?

A

Build up of water in accumulated rock and shale, which fell in slurry

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6
Q

What were the environmental impacts of the Aberfan disaster?

A

Partially covered the village

Blocked the canal and railway

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7
Q

When was the landslide in Leyte, Philippines?

A

2006

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8
Q

What was the cause of the landslide in Leyte?

A

Failure of a 450m high rock slope

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9
Q

How many people died in the Philippines landslide?

A

1000 people

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10
Q

How many people were impacted by the Philippines landslide?

A

16,000 people

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11
Q

What was the exposure of the Philippines landslide?

A

A high rural population density of 208 persons per km squared

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12
Q

When was the Vargas Debris Flow?

A

1999

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13
Q

Where is Vargas?

A

Venezuela

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14
Q

How many people became refugees in the Vargas debris flow?

A

44,000

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15
Q

How many people became homeless because of the Vargas debris flow?

A

400,000

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16
Q

What do we mean by environmental impacts?

A

How something impacts something we can affect (e.g. farmland, settlement, roads, rivers)

17
Q

What is the ultimate cause of Mass Movement?

A

When downslope forces exceed upslope forces

18
Q

What can cause Mass Movement?

A

Steepening
Undercutting
Human Action
Heavy Rainfall

19
Q

What can trigger mass movement?

A

Heavy rainfall

20
Q

What contributes to mass movement?

A

Steepening
Undercutting
Human Action

21
Q

Where did Human Action lead to Mass Movement?

A

Abervan

22
Q

Where did Heavy Rainfall lead to Mass Movement?

A

Leyte