Mass Movement

katherine.crick
Mind Map by katherine.crick, updated more than 1 year ago
katherine.crick
Created by katherine.crick about 5 years ago
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AS Level Geography (A2 Earth Hazards) Mind Map on Mass Movement, created by katherine.crick on 01/05/2015.
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Resource summary

Mass Movement
1 natural hazards
1.1 tornadoes
1.2 landslides/mudslides
1.3 tsunamis
1.4 volcanoes
1.5 floods
1.6 avalanches
1.7 bushfires/sandstorms
2 causes
2.1 human
2.1.1 deforestation
2.1.2 building/urbanisation
2.1.3 quarrying
2.1.4 added weight/stress
2.2 physical
2.2.1 slope angle
2.2.2 weathering
2.2.3 vegetation
2.2.4 climate/weather
2.2.5 rock types
2.2.5.1 e.g. clay- easily moved
2.3 slope failure= shear stress > shear strength
3 Event: extreme natural event- doesn't cause damage to humans.
4 Natural Hazard: event with perceived threat to humans and resources (e.g. damage to env/property.)
5 Natural Disaster: the effect (aftermath) of a hazard that has happened.
6 Management
6.1 drainage of water from hillsides
6.2 rock fall catchment fences
6.3 causing small landslides to prevent large buildup of stress
6.4 modification to slopes
6.4.1 e.g. reducing steepness to increase stability and reduce stress
6.5 reforestation
7 Human responses
7.1 dispatch of emergency services
7.2 aid: clean water, food, sanitation
8 Affects
8.1 property damage
8.2 loss of life and casualties
8.3 social unrest
8.4 loss of jobs and unemployment
8.5 homelessness
8.6 loss of resources
8.7 downfall of economy
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