Landslides

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.

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).

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.

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.

Shifting of Tectonic Plates.