Podcast
Questions and Answers
What is the first step to take during a landslide?
What is the first step to take during a landslide?
What is a common cause of sinkhole formation?
What is a common cause of sinkhole formation?
What should you do if you cannot escape a landslide?
What should you do if you cannot escape a landslide?
What is a type of sinkhole that forms in areas where sand covers the bedrock?
What is a type of sinkhole that forms in areas where sand covers the bedrock?
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What should you do after a landslide?
What should you do after a landslide?
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What is a consequence of a cover-collapse sinkhole?
What is a consequence of a cover-collapse sinkhole?
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Why are cenotes in Mexico important?
Why are cenotes in Mexico important?
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What is a factor that can compromise the underlying foundation of an area?
What is a factor that can compromise the underlying foundation of an area?
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What is the main cause of rainfall-induced landslides?
What is the main cause of rainfall-induced landslides?
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What can be affected by landslides?
What can be affected by landslides?
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What is a sign of an impending landslide?
What is a sign of an impending landslide?
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What can be done to prepare your home for landslides?
What can be done to prepare your home for landslides?
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What is the negative economic effect of landslides?
What is the negative economic effect of landslides?
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What is the purpose of making an emergency plan?
What is the purpose of making an emergency plan?
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What is a retention wall used for?
What is a retention wall used for?
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Why is it important to monitor changing water levels?
Why is it important to monitor changing water levels?
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Study Notes
Geological Hazards
- Rainfall-induced landslides are caused by heavy rain due to storms and southwest monsoons (habagat)
- Landslides result in the sliding down of soil, rocks, or mud from an elevated place, causing damage to houses, structures, and properties, and can even lead to loss of lives
- Negative economic effects of landslides include:
- Cost to repair structures
- Loss of property value
- Disruption of transportation routes
- Medical costs in the event of injury
- Indirect costs such as lost timber and lost fish stocks
- Landslides can affect water availability, quantity, and quality
Warning Signs of Landslides
- Look for new areas of moisture
- Look for warping in your home
- Look for warping and movement in the surrounding area
- Notice unusual sounds
- Monitor changing water levels
Preparing for Landslides
- Follow proper land-use procedures
- Contact local officials about past landslides
- Consider building retaining or deflection walls
- Talk to an insurance agent if your area is at risk
- Make an emergency kit
Safety During a Landslide
- Keep yourself alert and awake
- Listen to a local news station for updates
- Evacuate if it is safe to do so
- Be cautious and alert while driving
- Move to a second story, if possible
- Move out of the path of the landslide as quickly as you can
- Avoid river valleys and other low areas
- Curl into a ball if you cannot escape
Safety After a Landslide
- Go to a public shelter
- Avoid the area where the landslide occurred
- Check for trapped and injured people
- Help neighbors who need special assistance
- Assess the area for damage and safety
- Replant the affected area
- Talk to a geotechnical expert
Sinkholes
- Form when water dissolves surface rocks
- Types of sinkholes:
- Dissolution or solution sinkhole
- Cover-subsidence sinkhole
- Cover-collapse sinkhole
Causes of Sinkholes
- Soil erosion
- Underground caverns
- Leaking pipes and sewers
- Factors can compromise the underlying foundation over time, leading to sinkholes forming rapidly or gradually across a variety of terrains
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Description
Test your knowledge on geological hazards such as landslides, sinkholes, and more. Analyze the causes and recognize signs of impending geological hazards.
