Instructables
Picture of Landslide

A landslide or landslip is a geological phenomenon which includes a wide range of ground movements, such as rockfalls, deep failure of slopes and shallow debris flows, which can occur in offshore, coastal and onshore environments. Although the action of gravity is the primary driving force for a landslide to occur, there are other contributing factors affecting the original slope stability.

 
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Step 1: Causes

Picture of Causes
• groundwater (pore water) pressure acting to destabilize the slope
• erosion of the toe of a slope by rivers or ocean waves
• earthquakes adding loads to barely stable slope
• volcanic eruptions

Step 2: Landslides are aggravated by human activities, such as:

Picture of Landslides are aggravated by human activities, such as:
• deforestation
• vibrations from machinery or traffic
• earthwork which alters the shape of a slope, or which imposes new loads on an existing slope
• Construction, agricultural or forestry activities (logging) which change the amount of water which infiltrates the soil.

Step 3: Before a Landslide

Picture of Before a Landslide
• The following are things you can do to protect yourself, your family and your property from the effects of a landslide or debris flow:
• To begin preparing, you should build an emergency kit and make a family communications plan.
• Become familiar with the land around you. Learn whether debris flows have occurred in your area by contacting local officials. Slopes where debris flows have occurred in the past are likely to experience them in the future.
• Get a ground assessment of your property.

I love articles like these that give you answers to questions you've given up trying to define. This is something my kids would ask me, and I genuinely wouldn't know the correct answer to.

abauer58 months ago
Caught in a landslide....
Orngrimm9 months ago
Some videos if a landside ongoing:
2010 Italy: http://www.youtube.com/watch?v=R__3DYQCVnA
Unknown: http://www.youtube.com/watch?v=L12JeAz9YN0
2009 (?) Tennessee: http://www.youtube.com/watch?v=w40JgaKNihY
France, Cliffcollapse: http://www.youtube.com/watch?v=gvSe27Ht-NY
kraftmatic9 months ago
Is there a way to activate a landslide with an Arduino?
I'm pretty sure they're native to Picaxe.
Maybe with a Picaxe you could try to locate a BeagleBone, which would trigger the landslide.
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