Rockfall - Yosemite National Park (U.S. National Park Service)
2006年7月27日 · Rockfalls are a natural and dynamic geologic process involving the detachment and rapid downard movement of rock. Due to its steep, glacier-carved cliffs, Yosemite Valley experiences many rockfalls each year.
Rockfall - Wikipedia
A rockfall or rock-fall[1] is a quantity/sheets of rock that has fallen freely from a cliff face. The term is also used for collapse of rock from roof or walls of mine or quarry workings.
RockFalls - Utah Geological Survey
2009年4月11日 · Rockfall is a natural mass-wasting process that involves the dislodging and rapid downslope movement of individual rocks and rock masses. The widespread combination of steep slopes capped by well-jointed bedrock makes rockfall among …
The Science of Rockfall: What We Know—and What We Don’t
2017年10月2日 · While most rockfalls are smaller, the height of the cliffs gives rocks time to accelerate enough to deliver a deathly blow to anyone in their way; a rock falling 1,000 feet reaches a speed of about 172 miles per hour.
Rockfall - Encyclopedia.com
2018年6月11日 · Rockfall is a form of mass movement or mass wasting in which pieces of rock travel downward through some combination of falling, bouncing, and rolling after they are initially separated from the slope. The sizes of rockfall blocks can range from cubic centimeters to tens of thousand of cubic meters.
Rockfalls - (Intro to Geology) - Vocab, Definition ... - Fiveable
Rockfalls are rapid downward movements of rock fragments or boulders that occur when they detach from a cliff or steep slope. These events can happen due to various factors, including weathering processes, geological instability, or human …
Landslides, Rockfalls, Mudflows, Debris Flows | Geology.com
Saidmarreh Landslide, Iran One of the world*s largest slides - over five cubic miles of debris! Information and videos for landslides, rockfalls, mudflows and debris flows.