Mass Movement

Mass Movement

natural hazards
1. tornadoes
2. landslides/mudslides
3. tsunamis
4. volcanoes
5. floods
6. avalanches
7. bushfires/sandstorms
causes
1. human
  1. deforestation
  2. building/urbanisation
  3. quarrying
  4. added weight/stress
2. physical
  1. slope angle
  2. weathering
  3. vegetation
  4. climate/weather
  5. rock types
    1. e.g. clay- easily moved
3. slope failure= shear stress > shear strength
Event: extreme natural event- doesn't cause damage to humans.
Natural Hazard: event with perceived threat to humans and resources (e.g. damage to env/property.)
Natural Disaster: the effect (aftermath) of a hazard that has happened.
Management
1. drainage of water from hillsides
2. rock fall catchment fences
3. causing small landslides to prevent large buildup of stress
4. modification to slopes
  1. e.g. reducing steepness to increase stability and reduce stress
5. reforestation
Human responses
1. dispatch of emergency services
2. aid: clean water, food, sanitation
Affects
1. property damage
2. loss of life and casualties
3. social unrest
4. loss of jobs and unemployment
5. homelessness
6. loss of resources
7. downfall of economy

Resource summary

	Created by katherine.crick almost 10 years ago