61. Landslide - Wikipedia, The Free Encyclopedia 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, http://en.wikipedia.org/wiki/Landslide

Landslide From Wikipedia, the free encyclopedia Jump to: navigation search This article or section is in need of attention from an expert on the subject. WikiProject Geology or the Geology Portal may be able to help recruit one. If a more appropriate WikiProject or portal exists, please adjust this template accordingly. This article is about geological phenomenon. For other uses, see Landslide (disambiguation) "Rockslide" redirects here. For the comic book character, see Rockslide (comics) Landslide of soil and regolith in Pakistan 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, 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 of landslides Types of landslide Debris flow Earth flow ... edit Causes of landslides The Mameyes Landslide , which buried more than 100 homes, was caused by extensive accumulation of rains and, according to some sources, lightning.

62. FEMA: Landslide And Debris Flow (Mudslide) Fact sheet describes the warning signs, and advises what to do if you are in the path of one. http://www.fema.gov/hazard/landslide/index.shtm

Contact Us Site Map Frequently Asked Questions Search Advanced Search Home Disaster Information Plan Ahead ... After a Landslide Landslide 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, alternate freezing or thawing, and steepening of slopes by erosion or human modification. Landslide problems can be caused by land mismanagement, particularly in mountain, canyon, and coastal regions. In areas burned by forest and brush fires, a lower threshold of precipitation may initiate landslides. Land-use zoning, professional inspections, and proper design can minimize many landslide, mudflow, and debris flow problems. How can I protect myself from a landslide or debris flow? What to do before a landslide or debris flow What to do during a a landslide or debris flow What to do after a landslide or debris flow Landslide Hazards - Find research, monitoring, recent, archived, and state and local landslide information, advisories, learning tools, outreach, and prevention programs. ( Source: U.S. Geological Survey

63. Landslide An * Talk Story An Introduction to Processes and Features of Mass Wasting, *. For any questions concerning the content of these pages please contact Bruce http://seis.natsci.csulb.edu/basicgeo/Landslide/landslid.htm

An Talk Story An Introduction to Processes and Features of Mass Wasting For any questions concerning the content of these pages please contact Bruce Perry or Samuel de Haas

64. Landslide Hazards In Oregon Map of landslide geomorphology of Oregon City, Oregon, and vicinity interpreted from LIDAR imagery and aerial photographs, by Ian P. Madin and William J. http://www.oregongeology.com/sub/Landslide/Landslidehome.htm

Home Hazards Dept Info Contact Us ... Search Landslide hazards in Oregon Link to Dept. of Forestry debris flow warnings Landslide Symposium 2007 Landslide Forum 2006 Landslide Hazards in Oregon fact sheet (1266 KB PDF) Learn more about debris flow warnings Data entry form to report landslide events Woodson Debris Flow - December 2007 PDF of PowerPoint presentation (1.7 MB) Recent Publications: Map of landslide geomorphology of Oregon City, Oregon, and vicinity interpreted from LIDAR imagery and aerial photographs, by Ian P. Madin and William J. Burns. Open-file report O-06-27, 1 CD, $10 Buy CD Landslides are frequently the direct consequence of human activity. Seemingly insignificant modifications of surface flow and drainage may induce landslides. In an urban setting, improper drainage most often induces disastrous sliding. The placement of buildings, to capture a spectacular view, on slide-prone coastal dunes, eroding headlands and sand spits, or at the edge of a receding shoreline, may lead to the loss of the structure. It has been noted that in Portland, population pressure has pushed construction into many areas and sites previously rejected as landslide-prone. Agricultural irrigation and forestry practices such as clear-cutting and stripping vegetation from naturally oversteepened slopes have been shown to be responsible for a spate of landslides. Highway construction on similar slope conditions awaits only the first good rain to provoke earth movement. In an urban setting, improper drainage most often induces disastrous sliding.

65. NCLWG Home The Landslide Working Group is a collection of geologists from the USGS working together to inform the public of landslide hazards in Northern California. http://sfslide.wr.usgs.gov/

Northern California Landslide Working Group NCLWG Home Understanding Landslides Online NCLWG Information NCLWG Research ... About Us The new Northern California Landslide Working Group will combine the skills of landslide experts to better understand the hazard posed by landslides. We will look at how landslides work, how they relate to the rocks that make up the Earth and what triggers them. This investigation will provide a better picture of where and when landslides will occur and will help us avoid or prevent them. The NCLWG is sponsoring interdisciplinary USGS landslide research in Northern California. The first research project for the Group will be a scenario-based hazard map of the Oakland -Berkeley area. The scenario-based map will attempt to show where landslides are likely to occur when a certain triggering event (or combination of events) happens, such as an earthquake, heavy rain, or long rainy season. The NCLWG is also organizing a series of monthly landslide seminars, one hour presentations of recent and ongoing landslide research by members of the landslide community within and outside the USGS.

66. Effects Of El Niño On Streamflow, Lake Level, And Landslide Potential Below we examine some effects of El Niño events on streamflow, on lakelevel change of Great Salt Lake, and on landslide potential. http://geochange.er.usgs.gov/sw/changes/natural/elnino/

by Richard Reynolds, Michael Dettinger, Daniel Cayan, Doyle Stephens, Lynn Highland, and Raymond Wilson U.S. Geological Survey Under "normal" conditions, the tropical trade winds blow from east to west, Figure 1. ponding up warm water in the western Pacific. In the eastern Pacific, the trade winds pull up cold, deep, nutrient-rich waters along the equator from the Ecuadorian coast to the central Pacific. The warmth of the western Pacific results in a particularly vigorous hydrologic cycle there with towering cumulus clouds and tropical storms that "radiate" atmospheric waves and disturbances across vast regions of the globe. Heat and moisture lofted into the upper atmosphere by the clouds and storms are distributed by high-altitude winds across vast regions of the globe. As the waters of the central and eastern Pacific warm, the powerful tropical Pacific storms begin to form farther east than usual (Fig. 1) . As the distribution of storms spreads east along the equator, their influence on global weather systems also changes. Most notably, for our purposes, the jet stream over the North Pacific Ocean is invigorated and pulled farther south than normal, where it collects moisture and storms and carries them to the southwestern United States and northern Mexico. For More Information: References for this Section For More Information: The Role of Climate in Estuarine Variability; USGS.

67. Local News | Slides Close Roads; Many Areas Still Vulnerable | Seattle Times New Golden Gardens Drive Northwest just west of View Avenue Northwest is closed due to a landslide on Monday. The city says the road will be closed for several http://seattletimes.nwsource.com/html/localnews/2004051252_stormslide04m.html

self.name = "parentSection"; The Seattle Times Company NWjobs NWautos NWhomes ... Low-graphic version RSS feeds Home Local Home Eastside ... Shopping initnav('timesnav'); initnav('marketplacenav'); Our network sites seattletimes.com Advanced Movies Restaurants Today's events Hi Contact us Tuesday, December 4, 2007 - Page updated at 12:39 PM E-mail article Print view Share: Digg Newsvine Slides close roads; many areas still vulnerable By Jennifer Sullivan Seattle Times staff reporter PREV of NEXT MIKE SIEGEL / THE SEATTLE TIMES Golden Gardens Drive Northwest just west of View Avenue Northwest is closed due to a landslide on Monday. The city says the road will be closed for several months. This road supplies access to the north end of Golden Gardens. GREG GILBERT / THE SEATTLE TIMES This car slid down an embankment on Golden Gardens Drive, but no one was hurt. The road is now closed until spring. Slip slidin' away People living in areas prone to mudslides are advised to hire a geotechnical firm to analyze the slide potential on their property. Other suggestions: Additional information: www.seattle.gov/emergency/hazards/landslides.htm

68. Landslide - Encyclopedia Of Earth La Conchita, coastal area of southern California. This landslide and earthflow occurred in the spring of 1995. http://www.eoearth.org/article/Landslide

Author Login Encyclopedia of Earth Search Earthportal Earthnews Encyclopedia of Earth Forum EoE Pages Home About the EoE Community of Scholars FAQs ... Reviews Browse the EoE Titles (A-Z) Author Topics Topic Editor ... Collections Landslide Table of Contents Introduction Types of landslides Slides Falls ... Further Reading Content Source: U.S. Geological Survey (other articles) Article Topic: Geology This article has been reviewed and approved by the following Topic Editor: Galal Hassan Galal Hussein (other articles) Last Updated: July 13, 2007 Introduction 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. (Source: R.L. Schuster, U.S. Geological Survey 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.

69. Visual Glossary - Landslide landslide. A landslide is a movement of surface material down a slope. Landslide Hazards Program. landslide. 1995 landslide in La Conchita, California. http://earthquakes.usgs.gov/learning/glossary.php?termID=105

70. Popular Mechanics: Methane Hydrates -- Energy Source Of The Future? - Popular Me Methane bound in hydrates buried below the ocean floor could provide the world with an astounding amount of natural gasif it could be safely extracted. http://www.popularmechanics.com/science/earth/2558946.html

CONTACT US SUBSCRIBE ADVERTISE MARKETPLACE ... How-To Central Full Text Keyword menuStart('primaryNav'); Robotics Extreme Machines Research Worst-Case Scenarios ... Science Popular Mechanics: Methane Hydrates Energy Source of the Future? Natural gas locked up in methane hydrates could be the world's next great energy sourceif engineers can figure out how to extract it safely. BY BARBARA MAYNARD Published in the April 2006 issue. Page Email Print del.icio.us Reddit Digg it View blog authority Section Archive Methane hydrates look like ice, but they form above the freezing point of water. The dark surface of the Pacific spreads calmly beneath the derrick of the JOIDES Resolution . On the brightly lit rig deck, the night shift is hard at work. Twelve thrusters maintain position over the Cascadia Continental Margin, 40 miles west of Vancouver Island, while the crew snakes a string of drill pipe through the ship's "moon pool" until it hits the seafloor more than a mile below. When they haul up the core barrel, it contains 31 ft. of shale, silt and clayand traces of the world's most promising fossil fuel. On the catwalk, a scientist in flip-down face protection quickly punctures the plastic liner that encases the sediment, in order to prevent pent-up pressure from launching it straight into the air. Another runs an infrared camera over the core's surface. On a monitor, deep purple smudges indicate areas of intense coldand a geologic jackpot: methane gas straining against a rapidly degrading cage of icelike water.

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