definition of landslides
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landslide landslide. 1  the sliding of a mass of loosened rocks or earth down a hillside or slope. 2  the mass of loosened material sliding down. 3  an overwhelming majority of votes for one candidate or party in an election. 4  any overwhelming victory.
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tsunami The definition of a tsunami is a large sea wave caused by an earthquake, landslide or other disturbance under the ocean. A large and destructive wave created by an earthquake is an example of a tsunami. pl. -·mis or -·mi.
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Landslides 101 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:
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What is a Landslide? When soil, rock, and other earth debris can no longer hold it together and gives way to gravity, landslides happen. The downward force of a landslide can move slowly, (a mere millimeters per year) or quickly with disasterous effects. Landslides can even occur underwater, causing tidal waves and damage to coastal areas. These landslides are called submarine landslides. Landslides can be triggered by earthquakes, volcanic activity, changes in groundwater, a disturbance or change of slope. Intense rainfall over a short period of time tends to trigger shallow, fast-moving mud and debris flows. Slow, steady rainfall over a long period of time may trigger deeper, slow-moving landslides.
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11 Facts About Landslides 1 Debris flows, also known as mudslides, are a common type of fast-moving landslide that tends to flow in channels.  Mudslides develop when water rapidly accumulates in the ground and results in a surge of water-saturated rock, earth, and debris.
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- Potential landslide sites reveal themselves in several ways including: 1  Saturated ground or seeps in areas which are not typically wet. 2  new cracks and scarps or unusual bulges in the ground, roads or pavements. 3  movement of ancillary structures such as decks and patios in relation to a house.
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avalanche rapidly descending large mass of snow, ice, soil, rock, or mixtures of these materials, sliding or falling in response to the force of gravity. Avalanches, which are natural forms of erosion and often seasonal, are usually classified by their content such as a debris or snow avalanche.
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Landslide Hazard Information In addition, debris flows and mudflows usually occur in small, steep stream channels and often are mistaken for floods; in fact, these two events often occur simultaneously in the same area. Landslides can cause flooding by forming landslide dams that block valleys and stream channels, allowing large amounts of water to back up. This causes backwater flooding and, if the dam fails, subsequent downstream flooding.
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What is a Landslide? When soil, rock, and other earth debris can no longer hold it together and gives way to gravity, landslides happen. The downward force of a landslide can move slowly, (a mere millimeters per year) or quickly with disasterous effects. Landslides can even occur underwater, causing tidal waves and damage to coastal areas.
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Causes of landslides Causes of landslides. The causes of landslides are usually related to instabilities in slopes. It is usually possible to identify one or more landslide causes and one landslide trigger. The difference between these two concepts is subtle but important. The landslide causes are the reasons that a landslide occurred in that location and at that time.
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Avalanches An avalanche is a mass of snow moving rapidly down a slope, sometimes reaching speeds of 80 miles per hour, triggered by either natural causes or human activity. Avalanches are responsible for more deaths per year than earthquakes.
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What landslides and debris flows are Health threats from landslides and debris flows. In the United States, landslides and debris flows result in 25 to 50 deaths each year. The health hazards associated with landslides and mudflows include: Rapidly moving water and debris that can lead to trauma; Broken electrical, water, gas, and sewage lines that can result in injury or illness; and
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11 Facts About Landslides Find out how to take action here. 1  Landslides occur when masses of rock, earth, or debris move down a slope. 2  Mudslides develop when water rapidly accumulates in the ground and results in a surge of water-saturated rock, earth, and debris.
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What landslides and debris flows are Landslides occur when masses of rock, earth, or debris move down a slope. Debris flows, also known as mudslides, are a common type of fast-moving landslide that tends to flow in channels. Mudslides develop when water rapidly accumulates in the ground and results in a surge of water-saturated rock, earth, and debris. Mudslides usually start on steep slopes and can be activated by natural disasters. Areas where wildfires or human modification of the land have destroyed vegetation on slopes are particularly vulnerable to landslides during and after heavy rains.
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Landslide Hazard Information TYPES OF LANDSLIDES. The term landslide describes a wide variety of processes that result in the downward and outward movement of slope-forming materials including rock, soil, artificial fill, or a combination of these. The materials may move by falling, toppling, sliding, spreading, or flowing.
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landslide The definition of a landslide is a situation when dirt, rock or other pieces of earth begin to slide down a mountain or slope, or when someone wins a contest by a big majority. An example of a landslide is when heavy rains cause dirt and earth to fall rapidly down a cliff, sometimes even carrying buildings down with them.
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definitions - Landslidesreport a problem Landslides occur when the slope changes from a stable to an unstable condition. 1  A change in the stability of a slope can be caused by a number of factors, acting together or alone. Natural causes of landslides include: 2  groundwater (pore water) pressure acting to destabilize the slope.
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Landslides A landslide is the movement of rock, debris or earth down a slope. They result from the failure of the materials which make up the hill slope and are driven by the force of gravity.
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What is a Landslide? - Definition, Causes & Facts And despite most landslides needing a slope to move down, there is one type of landslide that can move sideways. That's a lateral spread or flow landslide and it can happen when an earthquake moves the soil material as though it were a liquid.
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definitions - Landslidesreport a problem Landslides occur when the stability of a slope changes from a stable to an unstable condition. 1  A change in the stability of a slope can be caused by a number of factors, acting together or alone. Natural causes of landslides include: 2  groundwater (porewater) pressure acting to destabilize the slope.
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Causes of landslides Causes may be considered to be factors that made the slope vulnerable to failure, that predispose the slope to becoming unstable. The trigger is the single event that finally initiated the landslide. Thus, causes combine to make a slope vulnerable to failure, and the trigger finally initiates the movement.
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Flag of Lithuania The yellow in the flag is meant to symbolize the sun and prosperity, the green is for countryside, liberty and hope, and the red represents the bravery and blood of those who have died for Lithuania.
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definitions - Landslidesreport a problem A landslide, also known as a landslip, is a geological phenomenon that includes a wide range of ground movements. Rockfalls, deep failure of slopes and shallow debris flows were common. Landslides 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. landslide, also known as a landslip, is a geological phenomenon that includes a wide range of ground movements. Rockfalls, deep failure of slopes and shallow debris flows were common. Landslides can occur in offshore, coastal and onshore environments.
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tsunami Noun[edit] tsunami ‎(plural tsunami or tsunamis) 1  A very large and destructive wave, generally caused by a tremendous disturbance in the ocean, such as an undersea earthquake or volcanic eruption. ( figuratively) A large and generally unstoppable surge.
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- Landslide: a special risk that requires special coverage. SEATTLE-Heavy rains can loosen soil and weaken hillsides, posing significant landslide risks to homeowners and business owners. Standard homeowners and business insurance specifically excludes damage caused by earth movement such as landslide and earthquake.
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Landslide Types and Processes Slope saturation by water is a primary cause of landslides. This effect can occur in the form of intense rainfall, snowmelt, changes in ground-water levels, and water-level changes along coastlines, earth dams, and the banks of lakes, reservoirs, canals, and rivers.andslides 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.