Gourt > Science > Earth Sciences > Geology > Geologic Hazards > Landslides (1)
- This entry refers to the geological term. For political usage, see landslide victory. For the Fleetwood Mac song, see Landslide (song).
A landslide is a geological phenomenon which includes a wide range of ground movement, such as rock falls, deep failure of slopes, and shallow debris flows. Although gravity acting on an over steepened slope is the primary reason for a landslide, there are other contributing factors:
- erosion by rivers, glaciers, or ocean waves create oversteepened slopes
- rock and soil slopes are weakened through saturation by snowmelt or heavy rains
- earthquakes create stresses that make weak slopes fail (see liquefaction, Hope Slide)
- volcanic eruptions produce loose ash deposits, heavy rain, and debris flows.
- vibrations from machinery, traffic, blasting, and even thunder may trigger failure of weak slopes
- excess weight from accumulation of rain or snow, stockpiling of rock or ore, from waste piles, or from man-made structures may stress weak slopes to failure and other structures
- groundwater pressure acting to destabilise the slope
- in shallow soils, the removal of deep-rooted vegetation that binds the colluvium to bedrock.
Special types of landslides
More on [ Landslide ]
#ISeeIReportNews: 750,000 threatened by mass flooding and landslides in Ken.. http://bit.ly/EAq8b #citizenjournalist
ISIRN (ISeeIReportNews) Sat, 07 Nov 2009 01:32:52 -0000
#ISeeIReportNews: 750,000 threatened by mass flooding and landslides in Ken.. http://bit.ly/EAq8b #citizenjournalist
Firefighters and Rela put on standby for landslides and floods http://bit.ly/3gNZp0
thestarnation (thestarnation) Sat, 07 Nov 2009 00:37:28 -0000
Firefighters and Rela put on standby for landslides and floods http://bit.ly/3gNZp0
Firefighters and Rela put on standby for landslides and floods: PETALING JAYA: Firefighters and Rela personnel .. http://bit.ly/3gNZp0
limweeliam (William Lim) Sat, 07 Nov 2009 00:36:50 -0000
Firefighters and Rela put on standby for landslides and floods: PETALING JAYA: Firefighters and Rela personnel .. http://bit.ly/3gNZp0
RT @ISIRN 750,000 threatened by mass flooding and landslides in Kenya: GENEVA, No.. http://bit.ly/EAq8b #citizenjournalist
Whingeing_Pom (Big G) Sat, 07 Nov 2009 00:34:36 -0000
RT @ISIRN 750,000 threatened by mass flooding and landslides in Kenya: GENEVA, No.. http://bit.ly/EAq8b #citizenjournalist
Sometimes mayors' wrists get slapped http://bit.ly/1mcAtB State campaign finance board rules against Rybak, Coleman; landslides stand
MnIndyLIVE (MnIndyLIVE) Fri, 06 Nov 2009 18:58:55 -0000
Sometimes mayors' wrists get slapped http://bit.ly/1mcAtB State campaign finance board rules against Rybak, Coleman; landslides stand
http://tinyurl.com/yd2b7b7 Landslides on the moon.
Starfleetmom (Starfleetmom) Fri, 06 Nov 2009 17:27:54 -0000
http://tinyurl.com/yd2b7b7 Landslides on the moon.
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Canada Landslide Project - Details of a major national landslide project in Canada, providing reports, links and photographs of major slides.
Geologic Hazards--Landslides (USGS) - Extensive information on landslides and their impacts, U.S. Landslide Monitoring Program, publications, current news and events, and current research.
Meta Description: [ USGS Landslide Hazards Program, responsible for reporting and researching landslides and landslide hazards ]
Haneberg Geoscience - Consulting services in engineering geology, hydrogeology, and applied geomechanics. Web site includes research abstracts on landslides and related geologic hazards. Port Orchard, Washington.
Meta Description: [ Haneberg Geoscience offers
internationally recognized consulting and applied research services in
engineering geology, hydrogeology, geomechanics, and other areas of the
applied earth sciences. ]
HazardWatch - The Institue of geological and Nuclear Sciences in New Zealand provides an excellent week-by-week listing of hazardous events , including landslides, in that very active country.
Meta Description: [ Look here for information on Hazards in New Zealand ]
International Landslide Centre - Home of the International Landslide Centre at University of Durham, a research centre dedicated to assisting less developed countries deal with landslide problems through research, training programmes and disaster assistance.
International Landslide Research Group - The ILG is an informal group of landslide practitioners who share landslide information. The website provides information about landslides worldwide, a newsletter, and meetings of landslide practitioners.
Meta Description: [ The ILRG is an informal group of individuals concerned about sharing information on landslide research
and promoting regional landslide analyses. ]
Kelso, WA landslide - Site describing the second largest urban landslide in US history. Papers, photos, links, and a discussion group.
Meta Description: [ Details of the Kelso, WA, USA landslide. This is the second largest suburban landslide in US history. Contains photos as well as geologic reports, lawsuits, and links. ]
Landslide Distribution Map Web Page - A Japanese database of landslides, allowing the user to tailor maps of landslide distributions to his/her own requirements.
Meta Description: [ 本サイトでは防災科学技術研究所で刊行している日本全国の「地すべり地形分布図」をWeb公開しています．ウェブマッピング(Web-GIS)により検索・表示が簡単にできます．WMSにも対応し、Google Map,Google Earthと重ね合わせできます． ]
Landslide Hazards and Planning - A guidebook for incorporating landslide hazards into the planning process.
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Landslide Links - Links to resources from the University of Colorado.
Meta Description: [ Natural Hazards Research and Applications Information Center - University of Colorado ]
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Landslide Slide Show - Photographs and detailed descriptions of several areas prone to landslides.
Meta Description: [ landslides landslide remedial works stabilisation stabilization zentoku japan tokushima vaiont rockslide anchors drainage Hadleigh castle ]
Potential San Francisco Bay Landslides During El Niﾃｱo - Maps and fly-by movies available.
Meta Description: [ EL Nino - Actual and Potential Landslides in San Francisco Bay Area including fly-bys, photos, maps and animations ]
SHALSTAB - A Digital Terrain Model for Mapping Shallow Landslide Potential - Technical report on and free download of a very simple model for mapping shallow landslide potential.
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Virtual Fieldtrip of the Slumgullion Earthflow - Detailed history of the geology of large landslides that dammed the Gunnison River in the San Juan Mountains near Lake City, Colorado.
Meta Description: [ USGS Landslide Hazards Program, responsible for researching, monitoring and forecasting landslide hazards ]
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