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 You are here: Home Landslide Hazards Program Advisories Thu, 22 May 2008 20:11:50 Flash Flood Warning for North-Central San Diego County, in Southwest California Thu, 22 May 2008 19:13:06 Flash Flood Warning for the Santiago and Sierra Burned Areas in San Bernardino, Riverside and Orange Counties, CA More Info Events Photos Show Dangerous Landslide Dam in China, Slated for Demolition (posted 05/27/2008) China Suffers Large Aftershoock, More Landslides - Plans to Dynamite Landslide Dam To Avert Flooding (posted 05/26/2008) More What's New Photos of Recent Landslide Damage in Oregon, December, 2007 California Geological Survey Landslide Inventory Maps Photo of the 2005 La Conchita Landslide. Landslides constitute a major geologic hazard because they are widespread, occur in all 50 states and U.S. territories, and cause $1-2 billion in damages and more than 25 fatalities on average each year. Expansion of urban and recreational developments into hillside areas leads to more people that are threatened by landslides each year. Landslides commonly occur in connection with other major natural disasters such as earthquakes, volcanoes, wildfires, and floods. The primary objective of the National Landslide Hazards Program (LHP) is to reduce long-term losses from landslide hazards by improving our understanding of the causes of ground failure and suggesting mitigation strategies.

2. Landslides landslides are rock, earth, or debris flows on slopes due to gravity. They can occur on any terrain given the right conditions of soil, moisture, 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.

3. Natural Hazards - Landslides Landslide potential of the conterminous United States Red areas have very high potential, yellow areas have high potential, and green areas have moderate http://www.usgs.gov/hazards/landslides/

@import url("/styles/common.css"); USGS Home Contact USGS Search USGS Natural Hazards Maps, Imagery, and Publications Hazards Newsroom Education ... Back to Natural Hazards Gateway Home Landslide potential of the conterminous United States: Red areas have very high potential, yellow areas have high potential, and green areas have moderate potential. Landslides can and do occur in the black areas, but the potential is low. Map not to scale. Sources: the National Atlas and the USGS Hi-res Low-res Natural Hazards - Landslides Landslides occur and can cause damage in all 50 States. Severe storms, earthquakes, volcanic activity, coastal wave attack, and wildfires can cause widespread slope instability. Landslide danger may be high even as emergency personnel are providing rescue and recovery services. To address landslide hazards, several questions must be considered: Where and when will landslides occur? How big will the landslides be? How fast and how far will they move? What areas will the landslides affect or damage? How frequently do landslides occur in a given area? Answers to these questions are needed to make accurate landslide hazard maps and forecasts of landslide occurrence, and to provide information on how to avoid or mitigate landslide impacts.

4. SpringerLink Home - Main www.springerlink.com/openurl. asp?genre=journal issn=1612510X - Similar pages landslides Aerial PhotographyItalian Atlas 2007 - Portrait of a Changing Italy Museum of Art for the XXI Century (MAXXI, formerly The Contemporary Art and Architecture Centre) http://www.springerlink.com/openurl.asp?genre=journal&issn=1612-510X

5. Landslides!--Earth Science Lesson Plan (grades 6-8)--DiscoverySchool.com Students learn how different soil materials can produce varying types of landslides; how scientists can predict where landslides could occur. http://school.discoveryeducation.com/lessonplans/programs/landslides/

Educator Login Passcode Login Products School Resources ... Young Scientist Challenge Enter Username Access resources you have created under your login. Teacher Tools such as: Lesson Plan Creator, Quiz Builder, and Worksheet Generator are no longer available. You can create new lesson plans and quizzes within your DE streaming account. If you don't have an account, sign up for a demo here. 6-8 > Earth Science Grade level: 6-8 Subject: Earth Science Duration: One to two class periods Objectives Materials Procedures Adaptations ... Credit Objectives Erosion: Landslide Buy this video VHS Students will understand the following: How to design an experiment and how to control different variables in an experiment. How different soil materials can produce varying types of landslides. How scientists can predict where landslides could occur. Materials For this lesson, you will need: Stream table or a container to act as a stream table (milk carton with one side cut away) Materials to line stream table: sand, soil, pebbles, diatomaceous earth, clay, mixture of material Graduated cylinder Watering can (soda bottle) Plastic sheeting or newspaper to cover lab tables or floor Scale or balance to measure amount of material in landslide (optional) Procedures Introduce the different types of landslides that occur. Discuss the different conditions that trigger each type and the resulting damage wrought by each type.

6. Volcanic Hazards: Landslides Describes and illustrates volcano landslides, including the ways in which they are generated and their effects on the environment. http://volcanoes.usgs.gov/Hazards/What/Landslides/landslides.html

Types and Effects Location Gas Lahars Landslides Lava Flows Pyroclastic Flows Tephra Volcano Landslides Start of landslide What are volcano landslides? Landslides are large masses of rock and soil that fall, slide, or flow very rapidly under the force of gravity. These mixtures of debris move in a wet or dry state, or both. Landslides commonly originate as massive rockslides or avalanches which disintegrate during movement into fragments ranging in size from small particles to enormous blocks hundreds of meters across. If the moving rock debris is large enough and contains a large content of water and fine material (typically, >3-5 percent of clay-sized particles), the landslide may transform into a lahar and flow downvalley more than 100 km from a volcano! Volcano landslides range in size from less than 1 km to more than 100 km . The high velocity (>100 km/hr) and great momentum of landslides allows them to run up slopes and to cross valley divides up to several hundred meters high. For example, the landslide at Mount St. Helens on May 18, 1980, had a volume of 2.5 km , reached speeds of 50-80 m/s (180-288 km/hr), and surged up and over a 400 m tall ridge located about 5 km from the volcano!

7. 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 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.

8. American Red Cross What Are landslides and Debris Flows, and What Causes Them Learn whether landslides or debris flows have occurred in your area by contacting local http://www.redcross.org/services/disaster/0,1082,0_588_,00.html

For News, Safety Tips and Disaster Updates Blackouts Chemical Emergencies Drought Earthquakes ... Winter Storms Find Your Local Red Cross Enter Zip Code Here: Or Browse Through A List of Chapters! Circle of Humanitarians Look Who's Helping ... Disaster Services Landslide and Debris Flow (Mudslide) (PDF File) Versión en Español Why Talk About Landslides? What Are Landslides and Debris Flows, and What Causes Them ... What to Do After a Landslide Why Talk About Landslides? Landslides are a serious geologic hazard common to almost every state in the United States. It is estimated that nationally they cause up to $2 billion in damages and from 25 to 50 deaths annually. Globally, landslides cause billions of dollars in damage and thousands of deaths and injuries each year. Individuals can take steps to reduce their personal risk. Know about the hazard potential where you live, take steps to reduce your risk, and practice preparedness plans. Landslides are a serious geologic hazard common to almost every state in the United States. It is estimated that nationally they cause up to $2 billion in damages and from 25 to 50 deaths annually. Back to Top What Are Landslides and Debris Flows, and What Causes Them?

9. ScienceDaily: Landslide News landslides and mudslides. Learn about landslide history, hazards, research, predictions and building practices to minimize risks. http://www.sciencedaily.com/news/earth_climate/landslides/

Landslide News Thursday, May 29, 2008 Print Email Bookmark Latest News Earth Science Atmosphere Atmosphere Climate Weather Chemistry ... Oceanography Environmental Issues Acid Rain Air Pollution Air Quality Drought ... Sustainability Environmental Science Biodiversity Coral Reefs Desert Ecology ... Wildfires Natural Disasters Earthquakes Landslides Natural Disasters Near-Earth Object Impacts Severe Weather El Nino and La Nina Floods Hurricanes and Cyclones Severe Weather ... Books RSS Millions Of Pounds Of Trash Found On Ocean Beaches full story Enormous Submarine Landslide 60,000 Years Ago Produced The Longest Flow Of Sand And Mud On Earth full story ... New Tool Determines Landslide Risk In Tropics Browse News Stories 1 to 10 of 37 stories view headlines only Floods Landslides Natural Disasters ... Proximity To A Flood Zone Lowers Property Values April 3, 2008 full story Hurricanes and Cyclones Geology Floods ... Post-Katrina Rebuilding? Mississippi Delta Both Spongy And Stable February 22, 2008 full story Natural Disasters Earthquakes Geography ... Earth Observation Essential For Geohazard Mitigation December 6, 2007 full story Soil Types Earthquakes Organic ... Bacteria Could Steady Buildings Against Earthquakes February 26, 2007

10. Italian Landslides Photos A collection of photographs taken by a geologist as he studied landslides and mudflows all over Italy. http://www.geocities.com/RainForest/8211/

My name is Marco Amanti and I am a geologist. I am a member of Italian Geological Survey and I often go to work on landslide sites. On this page I want to show you some of the landslides I met during the last 10 years. Photos of Italian landslides Photos of Campania mudflows (5 - 6 May 1998) Photos of mudflows of S. Felice a Cancello (CE) (5 - 6 May 1998) Updated February 1 st Sign Guestbook View Guestbook Well, till now persons visited this page! Congratulation, you are one of them! If you want to contact me please e-mail me at molla@geocities.com

11. Landslides - Background Information This section provides background information on landslide types, events, causes and triggers; scroll down for more information. http://www.geology.enr.state.nc.us/Landslide_Info/Landslides_background.htm

NCGS HOME Landslide Information > Backgound Information on Landslides This section provides background information on landslide types, events, causes and triggers; scroll down for more information. Landslide Information On This Site: Introduction to Landslides in North Carolina How to recognize landslides and how to deal with them Background on landslide types, events, causes and triggers Rock and slope stability Examples of historical landslide events in North Carolina Hurricanes Frances and Ivan, September 2004 Peeks Creek debris flow - Macon Co., Hurricane Ivan ... Download Macon County Landslide Hazard Maps (NCGS GHMS-1) Landslide presentation The following images were included in a MS PowerPoint presentation used by North Carolina Geological Survey geologists from the Asheville Regional Office at many public landslide outreach meetings. The presentation has been adapted to the Internet for broader distribution. This page is on "Background on landslide types, events, causes and triggers." Links to other topics appear in the contents shown above. Slide numbers correspond to those of the original MS PowerPoint presentation. Slide numbers "missing" are slides that were turned into text. Captions are from the original presentation.

12. Planning For Landslides - First Page A guidebook for incorporating landslide hazards into the planning process. http://www.planning.org/landslides/

document.location.replace('/landslides/docs/main.html'); Research Landslide Hazards and Planning document.write(document.title); Printer-Friendly Format Project Home The Problem What Are Landslides? Types of Landslides ... Related Links Search Planning.org My APA ID or E-mail: Password: Create a Login Join APA APA is an outspoken advocate for planning. Become a member and join thousands of people who share your dedication to building strong, vibrant communities. Make a Donation - Hurricane Katrina Relief - Other Donations... Landslides in the US See simulation of a slide Contacts Researchers Join mailing list (c) APA

13. Puget Sound Landslides: Home Page This is the home page of Puget Sound landslides, a Web site by the Washington State Department of Ecology. http://www.ecy.wa.gov/programs/sea/landslides/

Heavy rains bring landslides. Be prepared. More... Landslides are common on Puget Sound. Reduce your risks. Many slides occur after heavy rain. Check your drainage. Buying property? Investigate slope stability. home about slides warning signs what to do prevention ... ecology home

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

Skip navigation USGS Home Contact USGS Search USGS ... Contact Us Home Page The Geologic Hazards Team is located in Golden, Colorado, on the Colorado School of Mines campus. The Team works in the following three areas: Earthquake Hazards Program Landslide Hazards Program Geomagnetism Program Information Research Projects Staff List Contact us Geologic Hazard Images Earthquake Images Landslide Images Accessibility FOIA ... U.S. Geological Survey URL: http://geohazards.cr.usgs.gov/index.php Page Contact Information: Web Team Page Last modified: April 11, 2006 1:45:32 PM.

15. 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!

16. Hawaiian Landslides Landslide debris has now been mapped off of all the islands. Enormous amounts of material have traveled great distances, indicating that the slides were http://www.mbari.org/volcanism/Hawaii/HR-Landslides.htm

Home Ocean Observatories Marine Operations Current projects ... Postdoctoral Program Submarine Volcanism Submarine Volcanism Hot spots Hot spot plume Magmatic processes ... Site map Hawaiian landslides Debris from enormous landslides off Oahu and Molokai extends hundreds of kilometers Map © 2001 MBARI Larger version Pali above Kane'ohe Bay on Oahu: the slide-scarp of the Nuuanu landslide Photo © 2004 J.B. Paduan Hawaiian landslides have been catastrophic Volcanic activity and gentle erosion have not been the only forces to shape the Hawaiian islands. Landslide debris has now been mapped off of all the islands. Enormous amounts of material have traveled great distances, indicating that the slides were truly catastrophic. The Nuuanu and Wailau landslides, shown in the map, tore the volcanoes forming eastern Oahu and northern Molokai, respectively, in half, and deposited blocks large enough to have been given names as seamounts. Tsunamis generated during these slides would have been devastating around the entire Pacific Basin. (See the coral reefs page for evidence that an enormous tsunami hit the shores of Lanai.)

17. DAAC Study: When Land Slides Summer of 2001 was a season of devastating landslides. During June and July, landslides and floods throughout China s southern provinces left thousands dead http://earthobservatory.nasa.gov/Study/Landslide/

by Laurie J. Schmidt December 21, 2001 Summer of 2001 was a season of devastating landslides. During June and July, landslides and floods throughout China's southern provinces left thousands dead or homeless. At least 35 people died in a landslide west of Kathmandu, Nepal, and intense rain triggered severe flooding and landslides in 20 counties in West Virginia. In August, a landslide caused Ecuador's Sote oil pipeline to break, spilling some 1,000 barrels of crude oil and halting oil transport for a week. Title graphic: Slope failure near McClure Pass, Colorado, destroys a two-lane highway and leaves a car stranded in the debris. (Image courtesy of the USGS) The Slumgullion landslide in Hinsdale County, Colorado, probably dammed Lake Fork between 800 and 900 years ago. Based on photogeologic analysis, it appears to be the only landslide in the area with continuously moving material. (Image courtesy of the USGS Slumgullion Field Trip . A new browser window will open.) For more information, visit the Alaska SAR Facility DAAC and the EROS Data Center DAAC (now named the Land Processes DAAC ). (A new browser window will open.)

18. Ready.gov: Landslide And Debris Flow (Mudslide) landslides, also known as mudslides and debris flow, occur in all U.S. states and territories, and can be caused by a variety of factors including http://www.ready.gov/america/beinformed/landslides.html

Skip to navigation Skip to content Ready America Ready Business ... Ready Kids Search: Landslide and Debris Flow Downloading and Ordering All Ready Publications Overview ... State and Local Information Here's Something To Think About... Make a list of contact information for area animal control agencies, including the Humane Society and emergency veterinary hospitals and treatment facilities. Landslide and Debris Flow (Mudslide) Landslides, also known as mudslides and debris flow, occur in all U.S. states and territories, and can be caused by a variety of factors including earthquakes, storms and fires. Landslides can occur quickly, often with little notice, the best way to plan for a mudslide is to stay informed about changes in and around your home that could signal that a Landslides is likely to occur. Look for changes in landscape and water drainage, or new cracks in foundations and sidewalks. Prepare for landslides by following proper land-use procedures - avoid building near steep slopes or along natural erosion valleys. Consult a professional for advice on appropriate preventative measures for your home or business, such as flexible pipe fittings, which can better resist breakage.

19. ENVIRONMENT-INDONESIA: Deforestation Causing More Than Landslides While conjecture remains over whether deforestation was to blame for the landslides and floods that killed dozens of people in Indonesia on Dec.26 last year http://ipsnews.net/news.asp?idnews=41520

20. Geology Of Mars } Landslides Mass movement (commonly referred to as landslides) represents a geological process where surface materials move downhill by gravity. http://www.lukew.com/marsgeo/landslides.html

Mass Movements Mass Movements Mass movement (commonly referred to as landslides) represents a geological process where surface materials move downhill by gravity. Most of the Martian mass movements occur in Valles Marineris, the Grand Canyon of Mars. Figure 2.1 shows a section of a collapsed canyon wall. At the top of the picture, a rock avalanche at the three curved walls is clearly visible. There is also a large amount of debris accumulated at the foot of the walls. A close-up view of the central curved wall is shown in Figure 2.2 . The fan-shaped feature at the bottom is the front of a debris flow on the valley floor. Figure 2.3 is another view of debris that piled up to modify the valley floor on a large scale. Notice the lineated tectonic grabens on top of the plateau. (Graben represents a downthrown block of land mass produced by horizontal tensions.) The existence of these linear grabens suggests that Valles Marineris was probably formed by horizontal stretching of the regional tectonic stresses. Another interesting feature occurred on the valley floors of the fretted or chaotic terrain as shown in Figure 2.4 . Notice the lineated features on the valley floors. They were probably formed by the debris deposits coming off the steep walls. There may be some slow, glacier-like, down-slope movements parallel to the lineations, but much of the movements are in the direction perpendicular to these linear features.

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