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Questions and Answers
What human activities contribute to the worsening of landslides?
What human activities contribute to the worsening of landslides?
Human development, urban sprawl, resource exploitation, mining, and deforestation
What is the primary driving force behind a landslide?
What is the primary driving force behind a landslide?
Gravity
What can trigger a landslide, besides heavy rainfall and earthquakes?
What can trigger a landslide, besides heavy rainfall and earthquakes?
A slope cut to build a road, among other specific events
What is the term for the policy and practices aimed at reducing the risk of landslides and their impacts?
What is the term for the policy and practices aimed at reducing the risk of landslides and their impacts?
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What is the result of a decrease in shear strength or an increase in shear stress in slope material?
What is the result of a decrease in shear strength or an increase in shear stress in slope material?
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Where can landslides occur, apart from mountain ranges?
Where can landslides occur, apart from mountain ranges?
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What is the term for ground movements that include rockfalls, mudflows, and shallow or deep-seated slope failures?
What is the term for ground movements that include rockfalls, mudflows, and shallow or deep-seated slope failures?
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What is the term used to describe the movement of isolated blocks or chunks of soil in free-fall?
What is the term used to describe the movement of isolated blocks or chunks of soil in free-fall?
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What is the term for landslides that occur underwater?
What is the term for landslides that occur underwater?
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What is the term used to describe blocks coming away by rotation from a vertical face?
What is the term used to describe blocks coming away by rotation from a vertical face?
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What is the term used to describe the movement of a body of material that remains intact while moving over inclined surfaces?
What is the term used to describe the movement of a body of material that remains intact while moving over inclined surfaces?
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What is the term used to describe a form of subsidence where a layer of material cracks, opens up, and expands laterally?
What is the term used to describe a form of subsidence where a layer of material cracks, opens up, and expands laterally?
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What is the term used to describe the movement of fluidized material, which can be both dry or rich in water?
What is the term used to describe the movement of fluidized material, which can be both dry or rich in water?
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What is the term used to describe slow, distributed movements that can affect entire mountain slopes or portions of it?
What is the term used to describe slow, distributed movements that can affect entire mountain slopes or portions of it?
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Who proposed a new scheme for the classification of mass movements and subsidence processes in 1978?
Who proposed a new scheme for the classification of mass movements and subsidence processes in 1978?
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What is the term used to describe landslides that feature different movement types in different portions of the moving body?
What is the term used to describe landslides that feature different movement types in different portions of the moving body?
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Study Notes
Landslides and Human Development
- Human activities such as urban sprawl, mining, and deforestation can exacerbate landslides
- Land degradation can lead to reduced stabilization of soil by vegetation, making it more prone to landslides
Landslide Mitigation
- Landslide mitigation involves policies and practices to reduce the risk of landslides and their impact on human populations
Causes of Landslides
- Gravity is the primary driving force behind landslides
- Other factors affecting slope stability can produce conditions that make a slope prone to failure
- Landslides can be triggered by specific events such as heavy rainfall, earthquakes, or slope cuts for road construction
Types of Landslides
Hungr-Leroueil-Picarelli Classification
- Six types of landslide movements are recognized: falls, topples, slides, spreads, flows, and slope deformations
- Each type can occur in both rock and soil
- Falls involve isolated blocks or chunks of soil in free-fall
- Topple refers to blocks coming away by rotation from a vertical face
- Slides involve the movement of a body of material that remains intact while moving over inclined surfaces
- Slides can be sub-classified as planar or rotational
- Spreads involve the cracking, opening, and lateral expansion of a layer of material
- Flows involve the movement of fluidized material, which can be dry or water-rich
- Slope deformations are slow, distributed movements that can affect entire mountain slopes
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Description
Learn about the human factors contributing to landslides, including urbanization, resource exploitation, and climate change, and how they can be mitigated.
