Guide Note

Landslides happen when soil, debris and rocks move quickly down a slope because of gravity. They can be caused by earthquakes, volcanoes, floods and wildfires.

Fast Facts

Bad land management can cause landslides
Occur all over the U.S.
Can occur underwater causing tsunamis
Similar to avalanches made up of quickly falling snow, ice and rock on a mountain
The eruption of Mount St. Helens in 1980 caused the biggest landslide recorded in history¹

Landslide Warning Signs

Doors or windows suddenly sticking or jamming²
Concrete floors and foundations tilting or cracking²
New bulges and widening cracks on the ground²
Underground utility lines breaking²
Water breaking through the ground in new places²
Fences, retaining walls, utility poles or trees tilting or moving²
Faint rumbling sound that gets louder as landslide nears²
Sound of trees cracking or moving debris²
Ground sloping downward and shifting²
Collapsed pavement, mud and fallen rocks²

Categories

Science | Nature | Geology

View Note History

Landslides

The Mahalo Top 7

United States Geological Survey (USGS): Natural Hazards: Landslides
Wikipedia: Landslide
American Red Cross: Landslide and Debris Flow (Mudslide)
FEMA: Landslide Preparedness
North Carolina Geologic Survey (NCGS): Landslides
The Atlas of Canada: Landslides
YouTube Video: Landslides (Time: 3:46)

Recent Landslides News Stories

USGS: Landslide News
Science Daily: Landslide News

Landslides Information and Educational Resources

USGS: Landslide Types and Processes (1 MB)
UC Santa Cruz: Suboceanic Landslides (353 KB)
Science Master: Volcanic Landslides
Science News for Kids: Slip Sliding Away: Ocean Avalanches
Peralta Community College: Weathering and Mass Wasting Learning Module

Landslides Preparedness

USGS: Landslide Warning Signs
Los Angeles Basin Chapter: Disaster Preparedness-Landslides
Niles EMA: Preparing for a Landslide
The North Eastern Council: Landslide Awareness

Landslides Prevention

ESA: "Giant Robot Helps Prevent Landslides" (January 12, 2005)
Wikipedia: Landslide Mitigation
Geological Society of America: Landslide Mitigation Techniques (5 MB)

Landslides Photos and Videos

Google Image Search: Landslides
APA: Computer Simulation of a Landslide
Natural Resources Canada: Landslide Photo Collection
Google Video Search: Landslides
KQED: Landslide Detectives Video

Landslides Message Boards and Blogs

Google Blog Search: Landslides
Popsci.com: Landslides (April 14, 2005)
Geotechnical Engineering 101: Landslide Prevention

Landslides Research

American Planning Association (APA): Landslides Research
International Landslide Research Group
NBRO: Landslide Studies & Services Division
The Japan Landslide Society
University of Waterloo: Landslide Research Programe

Related Searches

Oregon Landslide | Landslide in Indonesia | Geology | Tsunami | Earthquakes | Volcanoes | Hurricanes | Gravity | Mount St. Helens | Los Angeles Landslide | How to Prepare for an Earthquake

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