Landslides

Landslides

No. Wind plays little if any role in landslides. Most landslides are caused by heavy rain on unstable slopes, expecially where vegetation has been removed or burned. Earthquakes are another common cause of landslides.

Khait landslide happened in 1949.

A lot of damage

There are a number of factors. First of all, California is geologically active, with mountains being thrust up by tectonic activity. The slopes of these mountains are oversteepened, meaning that, at the current slope angles are unstable. The vegetation that holds the soil in place is prone to fire, which removes the support, of the plant roots. This leaves the slopes vulnerable during the heavy rains that California can experience in the winter.

California is also prone to earthquakes, which trigger landslides.

People often do not think about the potential for natural disasters where they live if they have not seen such disasters firsthand. They will rationalize with thoughts like "It will never happen here." In other cases the people or companies selling the property may downplay the risk of landslides or may not do the necessary research on the risks the area poses.

'Landslide' was written by Stevie Nicks of Fleetwood Mac and released on that band's self-titled 1975 Album. It has since been covered by both the Dixie Chicks and the Smashing Pumpkins.

A top layer of land moving down a hill, generally under the influence of heavy rainfall.

The landslide of wet volcanic debris on the side of a volcanic cone is called a "lahar." Lahars are typically triggered by heavy rainfall or the melting of snow and ice during an eruption, mixing volcanic ash and debris with water to create a fast-moving, destructive flow. They can pose significant hazards to communities and infrastructure located near volcanoes.

Insects play a role in landslide hazards by affecting soil stability through their burrowing activities. Insect burrowing can weaken soil structure, making it more prone to erosion and landslides. Additionally, insects can contribute to vegetation loss, which can further increase the risk of landslides in areas with steep slopes.

Rockfalls and landslides are most likely to occur in conditions where steep terrain, loose or weathered rock, and heavy rainfall converge. Factors such as rapid snowmelt, earthquakes, or human activities like excavation can destabilize slopes. Additionally, prolonged periods of heavy rain can saturate the soil, reducing its cohesion and increasing the likelihood of movement. Areas with weak geological structures or previous landslide history are particularly vulnerable.

Sudden slope failures and landslides can be triggered by various factors, including heavy rainfall or rapid snowmelt that saturates soil, earthquakes that destabilize slopes, and human activities like construction or mining that alter natural land stability. Additionally, the weakening of soil and rock due to erosion, vegetation loss, or changes in water levels can also contribute to these events. Other triggers include volcanic activity and the freeze-thaw cycles that can fracture and destabilize rock and soil.

Yes, after many years, a gravestone on a hillside can fall over due to a landslide. Soil erosion, heavy rainfall, and seismic activity can weaken the ground, leading to a shift that dislodges the gravestone. Additionally, the natural settling of the earth can cause instability, making gravestones vulnerable to tipping over. Regular maintenance and proper installation can help mitigate these risks.

Landslides are primarily a local issue, as they occur in specific geographic areas where conditions such as steep terrain, heavy rainfall, or human activity create susceptibility. However, they can also be considered a global issue due to their occurrence in various regions around the world, often exacerbated by climate change, deforestation, and urbanization. The impacts of landslides, including loss of life and property damage, can resonate globally as they affect economies and communities. Thus, while the triggers and effects are localized, the broader implications connect to global environmental and developmental challenges.

they are the same because they both have to do with water troubling an area

When a river is blocked by a landslide, it can form a natural dam that temporarily holds back water, creating a temporary reservoir. If the dam is unstable, it can break and release a large volume of water downstream, causing a flood. Over time, natural processes or human intervention may remove the blockage and restore the river's flow.

Slope movements are commonly preceded by a decrease in effective stress because there is a direct correlation between effective stress and the strength of a frictional material like soil, whereby as the effective stress decreases, the normal stress on any potential shear surface within the material also decreases. This in turn leads to a reduction in the shear strength of said surface. If this reduces to such an extent that the shear stress on the surface exceeds the frictional shear strength, movement can occur.

Further to this, slopes composed of fine grained clay soils will undergo shrink and swell cycles as effective stress changes occur which can lead to strain softening behaviour and progressive failure.

For more information see the related link.

In particular review the equation in section 3.4 where frictional strength on a theoretical slip surface is shown to be dependent on the total normal stress (sigma n) acting on the surface minus the pore water pressure (u) or in other words the strength is directly proportional to the normal effective stress).

Gravity is a force everything on Earth is influenced by. The usual causes of landslides are earthquake, heavy rainfall, and the felling of trees on steep slopes.

There are many ways in which a landslide can affect wildlife habitats. The landslide can completely eliminate the homes of the wildlife or even block them from getting to their food and water sources.