DETERMINING THE SPEED OF AN AVALANCHE
Keywords:
Landslide velocity, slope speed, mass flow rate, debris flows, velocity gradient, event magnitude, subaerial landslides, topography characteristicsAbstract
A landslide is a large movement of earth and rock down a slope, usually caused by natural events such as seismic activity or rainfall. The speed at which a landslide moves is dependent on the angle and material composition of the hillside, amount of water available, presence of vegetation, and other conditions. To determine the exact speed, seismic instruments such as strain gauges can be used to measure changes in stress along the slope surface over time. Other techniques include using radar velocity monitors to measure displacement along the landslide’s path, or tracking markers that are embedded in the soil surface before an event occurs. By utilizing these instruments, researchers can determine the exact speed at which specific landslides will move.
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