1. Landslide Hazards Program USGS Landslide Hazards Program, responsible for reporting and researching landslides and landslide hazards http://landslides.usgs.gov/

USGS Home Contact USGS Search USGS Landslide Hazards Program Skip to main content Home Research Advisories ... Outreach Links You are here: Home Landslide Hazards Program Advisories There are no Current Advisories Please See Archives for Past Alerts issued More Info Events Costa Rica Landslide Death Toll Rises To 23 (posted 11/08/2010) FEMA Declares US Virgin Islands a Disaster Area Due to Floods and Landslides (posted 11/08/2010) More What's New Video Highlight : Watch USGS Landslide Scientists install debris-flow monitoring equipment on wildfire-burned areas in Southern California. Dramatic footage of the burned landscape and the challenges of measuring the potential threat of future debris flows. Elliot State Forest, Oregon Landslide Monitoring Site, Up and RunningReal-time data available Dr. Francis Ashland has recently joined the USGS Landslide Program as a research geologist, and will be located in Reston, Virginia. Dr. Ashland's research is focused on characterizing landslide conditions and defining climatic and hydrological controls on landslide activity. Photo of the 2005 La Conchita Landslide.

2. USGS Geologic Hazards Science Center US Geological Survey resources on hazards related to earthquakes, landslides, and geomagnetism. http://geohazards.cr.usgs.gov/

USGS Home Contact USGS Search USGS Geologic Hazards Science Center ... Geomagnetism USGS Geologic Hazards Science Center The Geologic Hazards Science Center is located in Golden, Colorado, on the Colorado School of Mines campus. The Science Center works in the following four programs: Earthquake Hazards Program Landslide Hazards Program Geomagnetism Program Global Seismographic Network General Information Contact Us Topical Research Projects Advanced National Seismic System (ANSS) A nationwide network of shaking measurement systems. Albuquerque Seismological Laboratory (ASL) /Global Seismograph Network (GSN) The ASL installs and maintains a global network of seismograph stations, develop, test, and evaluate a variety of seismic instrumentation. Earthquake Effects/Ground Motion Collects field data from seismic imaging, ground motion, and ground failure to yield better seismic hazard assessments and products. Geomagnetism Operates and maintains magnetic observatories located in the United States and its Territories. Landslide Hazards Conducts research, gathers information, responds to emergencies and disasters, and produces scientific reports and other products for a broad-based user community.

3. Landslide - Wikipedia, The Free Encyclopedia landslides associated with the Mount St. Helens eruption on May 18, 1980. Mount Semeru landslide by heavy rain in East Java, Indonesia on August 1981; Nakajima landslide in Nagasaki http://en.wikipedia.org/wiki/Landslide

Landslide From Wikipedia, the free encyclopedia Jump to: navigation search This article is about the geological phenomenon. For Ruddslide (disambiguation), see Landslide (disambiguation) "Rockslide" redirects here. For the comic book character, see Rockslide (comics) This article needs attention from an expert on the subject . See the talk page for details. WikiProject Geology or the Geology Portal may be able to help recruit an expert. (November 2007) Computer simulation of a "slump" landslide in San Mateo County , California (USA) in January 1997 A landslide or landslip is a geological phenomenon which includes a wide range of ground movement, such as rock falls, 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 . Typically, pre-conditional factors build up specific sub-surface conditions that make the area/slope prone to failure, whereas the actual landslide often requires a trigger before being released. Contents Causes Types Debris flow Earth flow ... edit Causes Main article: Causes of landslides The Mameyes Landslide , in barrio Tibes , Ponce, Puerto Rico, which buried more than 100 homes, was caused by extensive accumulation of rains and, according to some sources, lightning.

4. ::|: Landslides :|:: landslides are simply defined as the mass movement of rock, debris or earth down a slope and have come to include a broad range of motions whereby falling http://nidm.gov.in/Landslides.asp

NDMA MHA State RC Police Deptt. ... Useful Links Landslides are simply defined as the mass movement of rock, debris or earth down a slope and have come to include a broad range of motions whereby falling, sliding and flowing under the influence of gravity dislodges earth material. They often take place in conjunction with earthquakes, floods and volcanoes. At times, prolonged rainfall causing heavy block the flow or river for quite some time. The formation of river blocks can cause havoc to the settlements downstream on it's bursting. In the hilly terrain of India including the Himalayas, landslides have been a major and widely spread natural disaster the often strike life and property and occupy a position of major concern One of the worst tragedies took place at Malpa Uttarkhand (UP) on 11th and 17th August 1998 when nearly 380 people were killed when massive landslides washed away the entire village. This included 60 pilgrims going to Lake Mansarovar in Tibet. Consequently various land reform measures have been initiated as mitigation measures. The two regions most vulnerable to landslides are the Himalayas and the Western Ghats. The Himalayas mountain belt comprise of tectonically unstable younger geological formations subjected to severe seismic activity. The Western Ghats and nilgiris are geologically stable but have uplifted plateau margins influenced by neo- tectonic activity. Compared to Western Ghats region, the slides in the Himalayas region are huge and massive and in most cases the overburden along with the underlying litho logy is displaced during sliding particularly due to the seismic factor.

5. ILRG - INTERNATIONAL LANDSLIDE RESEARCH GROUP The ILG is an informal group of landslide practitioners who share landslide information. Provides information about landslides worldwide, a newsletter, and meetings of landslide practitioners. http://ilrg.gndci.cnr.it/

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6. Landslide Maps And Information « ABAG Earthquake And Hazards Program EarthquakeInduced landslides Source California Geologic Survey (CGS) Seismic Hazards Zonation Program Interactive Earthquake-Induced Landslide Hazard Map http://www.abag.ca.gov/bayarea/eqmaps/landslide/index.html

Search Residents Businesses Local Governments Students Hazard Maps and Information Earthquake Shaking Liquefaction Active Faults Landslides ... Sea Level Rise Local Government Planning Mitigation Recovery Vulnerable Housing Soft Story Buildings Losses and Disruption Housing Losses Infrastructure Losses Water/Wastewater System Disruptions Technical Reports ... About Us Landslide Maps and Information Earthquake-Induced Landslides Source: California Geologic Survey (CGS) Seismic Hazards Zonation Program Interactive Earthquake-Induced Landslide Hazard Map This map is derived from State-mandated regulatory maps that show “Zones of Required Investigation” for landslide (and liquefaction) hazard. They do not depict different degrees of hazard, rather they identify zones within which site specific studies will be required for new construction. These zone maps also are used in real estate transactions – sellers of properties within a “Zone of Required Investigation” must disclose that fact to prospective buyers. Rainfall-Induced Landslides :: Existing Landslides Source: USGS, updated 1998.

7. National Landslide Information Center USGS Landslide Hazards Program, responsible for reporting and researching landslides and landslide hazards. http://landslides.usgs.gov/nlic/

USGS Home Contact USGS Search USGS Landslide Hazards Program Skip to main content Home Research Advisories ... Outreach Links You are here: Home Outreach Links National Landslide Information Center About Us ... Useful Links National Landslide Information Center Outreach and Exhibits The NLIC publishes in various venues such as USGS fact sheets, books, pamphlets, and posters, and will provide personnel to present landslide information in schools, civic organizations, and other interested governmental entities. A toll-free phone line for landslide information, referrals, and data searches is maintained and between 20 and 30 calls for landslide information are taken per day. An exhibit booth for landslide information where the latest research and reference materials are shown at various national meetings and other USGS presentations. To contact the National Landslide Information Center: Email: highland@usgs.gov Direct telephone: 303-273-8588 Toll-free telephone (please leave a message and your call will be returned): 1-800-654-4966 Databases Maintained An online bibliographic database of published and unpublished landslide maps and reports accessible by title, author, year, or keywords.

8. Landslides United States Search and Rescue Task Force. landslides . Damage To Homes By landslides . WHAT ARE landslides? What Are landslides? landslides are rock, earth, or debris flows http://www.ussartf.org/landslides.htm

United States Search and Rescue Task Force Landslides Damage To Homes By Landslides WHAT ARE LANDSLIDES? What Are Landslides? The U.S. Geological Survey, working with other federal agencies, has efforts underway to study, plan, and mitigate landslide risks. So have some communities across the country. Many deal with landslides as part of flood control, erosion control, hillside management, earthquake hazard mitigation, road stabilization, and other programs. Perhaps the most common reminders of landslide risks are those "Watch For Falling Rocks" highway signs. Although "sliding rocks" is more apt, very few get to see a land slide. Occasionally we see small rocks or debris on the pavement, but a large size slide usually starts with such small incidents. Visually, a landslide resembles a snow avalanche, only with a louder rumbling noise, and is capable of generating enough force and momentum to wipe anything in its path. One such devastating landslide wiped entire towns and villages in Columbia in 1985 when 20,000 died. The pictures you see on this web site (including the background of this page), are recent examples from around the country. They show what's left after a slide. In some cases, only the rail or pavement is mangled, in others a house or building crushed, but in almost every aftermath, the losses are real, the damages total, and the terrain changes permanent.

9. Woodway, Washington Raw data files and aerial view of area. http://landslides.usgs.gov/monitoring/woodway/

USGS Home Contact USGS Search USGS Landslide Hazards Program Skip to main content Home Research Advisories ... Outreach Links You are here: Home Monitoring Woodway, Washington Monitoring Home ... Summary Data Woodway, Washington Data collection at the Woodway landslide ceased on October 19, 2006 Click here for Latest Data Background During January 1997, a large landslide from a bluff overlooking Puget Sound derailed five cars of a freight train near Woodway, Snohomish County, Washington. Many other landslides occurred throughout the Puget Sound area following rainy periods during January and March 1997. Purpose of Monitoring Data collection at this site supports research on hydrologic factors that control landslide initiation. In many landslides and unstable bluffs, infiltration of rainfall or snowmelt increases ground-water pressures. These elevated pressures can, in turn, induce landslide movement. The U.S. Geological Survey and its cooperators installed instruments during the summer and fall of 1997 behind the landslide head scarp and in adjacent areas atop the bluff. These instruments are used to monitor and detect changes in local conditions, including: Rainfall Groundwater Pressures Movement Current Monitoring Status Terminated Frequency of Web Graph Updates Terminated Monitoring performed in Cooperation with The Dominican Reflection Center and Landau Associates, Inc.

10. Alex MacLean landslides specializes in illustrative aerial photography and works throughout the United States for clients in the fields of advertising and editorial design, landuse planning http://www.landslides.com/

11. DPD Emergency Management -- Landslides 2010 City of Seattle Landslide Awareness Meetings. Learn how to protect yourself and your property at one of two free landslide meetings this fall, sponsored by DPD and Seattle http://www.seattle.gov/dpd/Emergency/Landslides/default.asp

Departments Services Staff Directory Seattle.gov This Department whichDept=""; whichStyle=""; Planning Permits Compliance Online Tools ... Resource Center DPD Emergency Management Landslides 2010 City of Seattle Landslide Awareness Meetings Learn how to protect yourself and your property at one of two free landslide meetings this fall, sponsored by DPD and Seattle Public Utilities. Northgate Community Center Multipurpose Room Saturday, Nov. 20, 2010 10 a.m. to noon Directions South Seattle Community College Saturday, Dec. 4, 2010 10 a.m. to noon Directions Helpful Resources Landslide Do's and Don'ts FEMA Landslide Factsheet Seattle Landslide Prone-Area Map *Please RSVP by contacting Tyson Lin, DPD Community Relations at (206) 684-8443 or tyson.lin@seattle.gov Landslide Emergency - Who to Call If a landslide damages your property and you have an immediate concern for your safety, leave the premises and call 9-1-1 Seattle Public Utilities (SPU) All Drainage Complaints and Maintenance requests related to storm drain or wastewater facilities: Field Operations, staffed 24/7: 386-1800

12. Landslides As population expands into once sparsely populated rural forests and agricultural lands, the need for mapping and understanding landslides becomes increasingly urgent. http://www.dnr.wa.gov/ResearchScience/Topics/GeologicHazardsMapping/Pages/landsl

var MSOWebPartPageFormName = 'aspnetForm'; Contact Us Media Center Jobs Site Map ... Topics Landslides Landslides As population expands into once sparsely populated rural forests and agricultural lands, the need for mapping and understanding landslides becomes increasingly urgent.  Coupled with climatic change prediction for more frequent and intense storm events, mapping and understanding geologic hazards can greatly reduce impacts to infrastructure, loss of life, and property.  Although we do not have an exact estimate of damage landslides have caused in Washington, a rough estimate from only large storm systems and earthquakes is in billions of dollars.  The potential damage from landslides is tens to hundreds of billions of dollars.  In 1998, the Aldercrest-Banyon landslide alone damaged or destroyed 138 homes and accounted for $30-40 million in losses. Nationally, landslides account over $2 billion of loss annually and result in an estimated 25 to 50 deaths a year. Although landslides have caused widespread damage across the United States (including Washington State), they are often underrepresented and understudied compared to other potential geologic hazards, such as earthquakes, tsunamis, and volcanoes.  Landslides are complex, often moving in numerous different ways, from small shallow slumps and rock topples to deep-seated landslides.  Understanding how and why these landslides move help scientists develop mitigation techniques for some landslides and help determine future hazards for roads, houses, and infrastructure.

13. FEMA: Are You Ready? Are You Ready? landslides and Debris Flow (Mudslide) landslides occur in all U.S. states and territories. In a landslide, masses of rock, earth, or debris move down a slope. http://www.fema.gov/areyouready/landslide.shtm

Skip to content FEMA.gov FEMA Mobile Site Contact Us ... Frequently Asked Questions or Additional Languages Search Advanced Search Home Apply for Assistance FEMA Audiences ... About FEMA Social Media FEMA Mobile Email Updates Facebook Twitter ... Appendix C (PDF 1.6MB) Print Preview Are You Ready? Landslides and Debris Flow (Mudslide) Landslides occur in all U.S. states and territories. In a landslide, masses of rock, earth, or debris move down a slope. Landslides may be small or large, slow or rapid. They are activated by storms, earthquakes, volcanic eruptions, fires, and human modification of land. Debris and mud flows are rivers of rock, earth, and other debris saturated with water. They develop when water rapidly accumulates in the ground, during heavy rainfall or rapid snowmelt, changing the earth into a flowing river of mud or “slurry.” They flow can rapidly, striking with little or no warning at avalanche speeds. They also can travel several miles from their source, growing in size as they pick up trees, boulders, cars, and other materials. Landslide problems can be caused by land mismanagement, particularly in mountain, canyon, and coastal regions. Land-use zoning, professional inspections, and proper design can minimize many landslide, mudflow, and debris flow problems.

14. Puget Sound Landslides: Slide Show Home A slideshow of photographs and explanations about the causes and effects of landslides in this part of US state of Washington. http://www.ecy.wa.gov/programs/sea/landslides/show/show.html

See what factors cause landslides along Puget Sound. View recent slides. Reduce your chances of having a slide.

15. Landslides 101 USGS Landslide Hazards Program, responsible for reporting and researching landslides and landslide hazards http://landslides.usgs.gov/learning/ls101.php

USGS Home Contact USGS Search USGS Landslide Hazards Program Skip to main content Home Research Advisories ... Outreach Links You are here: Home Frequently Asked Questions (FAQ) Landslides 101 The Liquid Earth ... Links to More USGS Landslide Information Landslides 101 What is a Landslide? The term landslide 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 earthquakes of magnitude 4.0 and greater have been known to trigger landslides volcanic eruptions produce loose ash deposits, heavy rain, and debris flows 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 Slope material that become saturated with water may develop a debris flow or mud flow. The resulting slurry of rock and mud may pick up trees, houses, and cars, thus blocking bridges and tributaries causing flooding along its path.

16. Landslides This information has been developed in association with Peter Dahlhaus, University of Ballarat. The term landslide is usually defined as the movement of a mass of rock, debris or http://www.dpi.vic.gov.au/dpi/vro/coranregn.nsf/pages/coran_lwm_heytesbury_lands

@import "/dpi/vro/vroadmin.nsf/images/includes/$file/import-vro-style.css"; To page content To primary navigation To footer links DEPARTMENT OF PRIMARY INDUSTRIES DPI Home Contact Us About Us Search: VRO Home Corangamite Region Land and Water Management Statewide Homepage ... VRO Feedback Landslides This information has been developed in association with Peter Dahlhaus, University of Ballarat. The term landslide is usually defined as: "the movement of a mass of rock, debris or earth down a slope" . This international definition is used by the Australian Geomechanics Society and includes all forms of movement from debris creep to rock falls. The terminology used to describe a landslide depends on the information known about the processes and generally uses two nouns to describe material involved and the style of movement, e.g. a rock fall or a debris flow The landslide material is classified as either 'bedrock' or 'engineering soil'. Engineering soils are further subdivided into either debris (predominantly sand, gravel, cobbles and boulders) or earth (predominantly silt and clay). The five main types of movement are falls, topples, slides, spreads and flows. Landslides near Scotts Creek Landslides have been a regular event in the natural evolution of landscapes in the Corangamite Region over the past several million years. They occur as one of the principal processes of landscape development. The main function of a landslide is the removal of Earth materials during the formation of valley and coastlines. These processes are still operating in those parts of the region that are being worn down by the actions of streams and rivers, and the eroding coastline.

17. Landslides And Debris Flows- Fly-by Movies, Animations, & Photos - USGS Computer simulation and film footage shows landslides and mudflows that took place in California in 1996 and 1997. http://elnino.usgs.gov/landslides-sfbay/photos.html

INTRODUCTION MAPS '82 DAMAGES SUGGESTED READING Fly-by Movies of Ancient Landslides in the East Bay Hills and in Marin County FLY-BY OF CROSS-SECTIONAL VIEW OF A LANDSLIDE QUICKTIME MOVIE 7.8 MB MPEG MOVIE 2.5 MB ANIMATED GIF 6.9 MB EAST BAY HILLS FLY-BY mpeg movie, 1.7 MB Fly-by showing landslides (in red) throughout the East Bay Hills from Fremont to Oakland. The image includes Sunol and Livermore Valleys in the background. The fly-by ends with a close-up view looking down directly on the Snake Road. MARIN COUNTY FLY-BY mpeg movie, 2.2 MB Fly-by showing landslides (in red) in Marin County. The flight starts down the Tomales Bay, following the path of the San Andreas fault, continues southward along Stinson Beach, crosses eastward the Marin Headlands, and swings northward to the city of Novato. Examples of Landslides and Debris Flows 1996-97 Rainy Season DEBRIS FLOW SIERRA NEVADA (computer simulation) DEEP-SEATED LANDSLIDE POLHEMUS ROAD, SAN MATEO COUNTY (computer simulation) + more photos!

18. Landslides A landslide is the gravitational movement of a mass of rock, earth or debris down a slope. landslides are usually classified on the basis of the material involved (rock, debris http://eusoils.jrc.ec.europa.eu/library/themes/LandSlides/

@import url("http://eusoils.jrc.ec.europa.eu/css/menuv.css"); Privacy statement Legal notice EUROPA European Commission ... Institute for Environment and Sustainability Soil Themes > Landslides Principles Impacts Landslides in Europe Landslides and the EU Soil Thematic Strategy ... Contact points Principles A landslide is the gravitational movement of a mass of rock, earth or debris down a slope. Landslides are usually classified on the basis of the material involved (rock, debris, earth, mud) and the type of movement (fall, topple, avalanche, slide, flow, spread). Thus, the generic term landslide also refers to mass movements such as rock falls, mudslides and debris flows. Volcanic mudflows and debris flows are also called lahars. Shallow landslides usually involve only the soil layer and upper regolith zone, while deep-seated landslides additionally involve bedrock at higher depth. Landslide volume can vary from some tens of cubic metres to several cubic kilometres for giant landslides, while landslide speed may range from a few centimetres per year for slow-moving landslides to tens of kilometres per hour for fast, highly destructive landslides. According to the state of activity or movement, existing landslides can be classified as active, dormant (potentially reactivated) or inactive (often relict or fossil). Landslides are generally induced when the shear stress on the slope material exceeds the material’s shear strength. The occurrence and reactivation of landslides is conditioned by a number of terrain and geo-environmental factors related to bedrock and soil properties, weathering conditions, jointing and structure, slope morphology, land cover/use, surface and ground water flow, etc.

19. Landslides landslides have occurred in almost every state and can cause significant damage. The term landslide describes downhill earth movements that can move slowly and cause damage http://www.redcross.org/portal/site/en/menuitem.86f46a12f382290517a8f210b80f78a0

20. Landslide Types And Processes landslides in the United States occur in all 50 States. The primary regions of landslide occurrence and potential are the coastal and mountainous areas of California, Oregon http://pubs.usgs.gov/fs/2004/3072/fs-2004-3072.html

Landslide Types and Processes The PDF for the report is 1 MB U.S. Department of the Interior U.S. Geological Survey Fact Sheet 2004-3072 July 2004 Landslides in the United States occur in all 50 States. The primary regions of landslide occurrence and potential are the coastal and mountainous areas of California, Oregon, and Washington, the States comprising the intermountain west, and the mountainous and hilly regions of the Eastern United States. Alaska and Hawaii also experience all types of landslides. Landslides in the United States cause approximately $3.5 billion (year 2001 dollars) in damage, and kill between 25 and 50 people annually. Casualties in the United States are primarily caused by rockfalls, rock slides, and debris flows. Worldwide, landslides occur and cause thousands of casualties and billions in monetary losses annually. Click on image for larger version. La Conchita, coastal area of southern California. This landslide and earthflow occurred in the spring of 1995. People were evacuated and the houses nearest the slide were completely destroyed. This is a typical type of landslide. Photo by R.L. Schuster, U.S. Geological Survey. Figure 1. An idealized slump-earth flow showing commonly used nomenclature for labeling the parts of a landslide.

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