Soil and General Term Landslides

A natural disaster has the capability to cause large scale damage and destruction to an area. Seismic events have been known to alter landscapes and affect the livelihoods, health and development of communities. No two earthquake events are the same and the level of threat posed by an earthquake can vary due to both the human and physical factors of an area. The 2010 magnitude - 7.0 earthquake that occurred in Haiti is an example of where a natural disaster caused a previously vulnerable area to suffer tremendous loss and debilitating socio-economic impacts, to an already poverty-stricken nation.

This is due to the same factors that caused the 1903 landslide. Geologists are using different technological tools in order to be able to warn those around the mountains of a potential landslide. These tools include seismic monitoring stations and tilt meters. The locations of these sensors are targeted mostly at the South Peak rather than the North Peak which caused the 1903 slide. (Benson, N.D) Canadian Government heavily funds the monitoring of mountains in order to restrict developments in potentially hazardous

Tiny dots of white against the plant-covered landscape (red in this image) are possible landslides, a common occurrence in mountainous terrain after large earthquakes. The Enriquillo-Plantain Garden fault zone runs along the two linear valleys at the top of the imageThe magnitude 7.0 Mw earthquake occurred inland,

Any rainfall increases fluvial erosion. When rain does fall, this creates ephemeral streams causing water erosion due to fast forces of water. Flash floods are possible as well creating even more erosion.

Homes may be destroyed. Transport and communication links may be disrupted. Water pipes may burst and water supplies may be contaminated. Shops and business may be destroyed. Looting may take place. The damage to transport and communication links can make trade difficult. The built landscape may be destroyed. Fires can spread due to gas pipe explosions. Fires can damage areas of woodland. Landslides may occur. Tsunamis may cause flooding in coastal areas.

In the United States alone, landslides are estimated to cause 25 to 50 deaths and over one billion dollars in damage every year (Landslides 101). Landslides may be caused by natural factors or man-made events. Natural factors include over steepened slopes created through erosion caused by rivers, heavy rains or snowmelt saturation slopes and

Economic and development of any area is always and always will be interrupted by disasters big and small. These disasters can have a big impact on the economy by destroying businesses, homes, and damage property. As disaster pose a challenge to up and coming or existing developments or communities there are ways to possibly help damage and lose such as not building in a flood zone and moving to higher elevation. Disasters can have an effect on families to.

USGS (U.S. geographical Survey) scientists continue to assist with ongoing monitoring of hazards and possible future impacts. They now know that the Oso landslide’s average speed was 40mph. covering approximately ½ square mile with 18 million tons of sand, silt and clay. The landslide caused a dam t form in the North Folk Stillaguamish River which I

Most landslides occurred on the forested mountain slopes around the Liquine-Ofqui Fault. The landslides cause any fatalities nor significate economic damage due to being uninhabited. However, one landslide caused destruction and alarm following the blockage of the outflow of Rinihue Lake. The water level of the lake quickly rises, causing floods near other lakes and towns. About 100 km (62 mi) south of the Rinihue Lake, landslides in the mountains around Golgol River cause the river to dam up; when the dam burst it create a flood down the Puyehue Lake. The Golgol landslides destroyed many routes include Route 215-CH which connects to Bariloche in Argentina. On 22nd of May, Cordon Caulle erupted just 38 hours of the Great Chilean Earthquake. While the volcano did erupt, people were too occupied with the serve damage caused by the

Within the state of New York, landslides are classified as the downward movement of a slope and materials under the force of gravity (New York State Hazard Mitigation Plan, 2008). This definition also includes: a wide range of ground movement, such as rock falls, deep slope failure, shallow debris flows, natural rock, soil or artificial fill (New York State Hazard Mitigation Plan, 2008). Depending on the size and location of the landslide, landslides can be dangerous (Hyndman and Hyndman 2014). There are three mechanisms that initiate landslides. One mechanism is too much water. When water is added to a slope, soil becomes saturated and pore water pressure increases causing a slope to slide. A second mechanism is cutting the toe and oversteepening of the base. Removal or addition of material at the bottom of a landslide increases steepness of a slope. A steeper slope is less stable, increasing the likeliness of a landslide to occur. The third mechanism is adding material to the top of a slope, this also helps creates steeper

A hazard can best be defined as a 'situation that poses a level of threat to life, health, property or the environment.' The overall impact of earthquakes as a natural hazard varies greatly from one place and timeframe to another. As do the types of hazards, which are categorised into primary and secondary. Primary hazards are created by the direct seismic energy of an earthquake; this could include liquefaction, slope failure and tsunamis. These primary hazards can in turn trigger secondary hazards such as floods, fires, disease and destabilisation of infrastructure. A number of factors play a part in determining the severity

Earthquake Hazards occur when there are adverse effects on human activities. This can include surface faulting, ground shaking and liquefaction. In this essay I will be discussing the factors that affect earthquakes, whether human such as population density, urbanisation and earthquake mitigation or physical such as liquefaction, magnitude, landslides and proximity to the focus.

Due to diverse geo-climatic conditions prevalent in different parts of the globe, different types of natural disasters like floods, droughts, earthquakes, cyclones, landslides, and volcanoes etc may strike according to the vulnerability of the area.

     Although it is certain that violent Earth tremors in themselves are destructive, there are often other kinds of Earth movements that are triggered by earthquake shock waves. Thus, the violent shaking that accompanies many earthquakes often causes rockslides, snow avalanches, and landslides. In some areas these events are frequently more devastating than the Earth tremor itself.

Bangladesh is one of the largest deltas in the world which is highly Penetrable to Natural Disasters because of its Geographical location, Flat and low-lying landscape, Poverty, Population density, Illiteracy, Lack of Institutional setup etc. Similarly the Physical, Social as well as Economic states of Bangladesh are very typical to any of the most Penetrable countries to Natural Disasters in the world . The total land area is 147,570 sq. km. consists mostly of Floodplains (almost 80%) leaving major part of the country (with the exception of the north-western highlands) prone to flooding in the rainy season. Moreover, the adverse affects of Climate Change – especially High Temperature, Cyclones and Sea-level Rise, Storm Surges, Salinity Intrusion, Heavy Monsoon Downpours etc. has aggravated the overall Economic Development scenario of the country to a great extent.