Which factor is important in initiating mass wasting events?

Which factor is important in initiating mass wasting events?

Increased Water. Of all of the factors that play a role in erosion and therefore trigger mass wasting, water may be the most important. Water can both increase the risk of mass wasting and decrease the risk, depending on how much water is present.

Which factors most affect mass wasting events?

Mass wasting is influenced by slope, material strength, water content, and amount of vegetation. Mass wasting can be triggered by storms, earthquakes, eruptions, and human activity. Fall, slide, flow, and creep are the main categories of mass wasting mechanisms.

Which factor is important in initiating mass wasting events group of answer choices lack of water removal of native vegetation lack of soil nutrients all the above?

Table 1. Relative erosion hazards of selected cropping systems.

What factors activate the process of mass movement?

Such factors include: weathering or erosional debris cover on slopes, which is usually liable to mass movement; the character and structure of rocks, such as resistant permeable beds prone to sliding because of underlying impermeable rocks; the removal of the vegetation cover, which increases the slope’s susceptibility …

What two factors are significant to mass movements?

Mass wasting occurs when a slope fails. A slope fails when it is too steep and unstable for existing materials and conditions. Slope stability is ultimately determined by two principal factors: the slope angle and the strength of the underlying material.

What is the most common trigger for mass wasting in Texas?

Increased water content within the slope is the most common mass-wasting trigger.

What are the three factors that contribute to mass wasting?

Factors that change the potential of mass wasting include: change in slope angle, weakening of material by weathering, increased water content, changes in vegetation cover, and overloading.

Which of the following is mass wasting?

Mass wasting is the movement of rock and soil down slope under the influence of gravity. Rock falls, slumps, and debris flows are all examples of mass wasting. Often lubricated by rainfall or agitated by seismic activity, these events may occur very rapidly and move as a flow.

What factors increase the risk of mass wasting?

Increased Water. Of all of the factors that play a role in erosion and therefore trigger mass wasting, water may be the most important. Water can both increase the risk of mass wasting and decrease the risk, depending on how much water is present. This can be related to building a sandcastle at the beach.

What are the characteristics of a mass wasting event?

Areas with steep topography and rapid rainfall, such as the California coast, Rocky Mountain Region, and Pacific Northwest, are particularly susceptible to hazardous mass-wasting events. Forces on a block on an inclined plane (fg = force of gravity; fn = normal force; fs = shear force). Mass wasting occurs when a slope fails.

What are the causes of mass wasting on a slope?

It could be rapid snowmelt, intense rainfall, earthquake shaking, volcanic eruption, storm waves, rapid- stream erosion, or human activities, such as grading a new road. Increased water content within the slope is the most common mass-wasting trigger. Water content can increase due to rapidly melting snow or ice or an intense rain event.

How does vegetation removal cause mass wasting?

Vegetation Removal. We also see that vegetation removal can trigger mass wasting. Plants, trees and other forms of vegetation stabilize soil on the surface and protect it from the impact of raindrops, which can detach the bonds holding the soil together.