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Mailboxes caught in a mudflow following the May 1980 Mount St. Helens volcanic eruption. A mudflow, also known as mudslide or mud flow, is a form of mass wasting involving fast-moving flow of debris and dirt that has become liquified by the addition of water. [1] Such flows can move at speeds ranging from 3 meters/minute to 5 meters/second. [2]
A lahar travels down a river valley in Guatemala near the Santa Maria volcano, 1989. A lahar (/ ˈ l ɑː h ɑːr /, from Javanese: ꦮ꧀ꦭꦲꦂ) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water.
Detailed map of Mount Rainier's summit and northeast slope showing upper perimeter of Osceola collapse amphitheater (hachured line) The Osceola Mudflow, also known as the Osceola Lahar, was a debris flow and lahar in the U.S. state of Washington that descended from the summit and northeast slope of Mount Rainier, a volcano in the Cascade Range during a period of eruptions about 5,600 years ago.
Media reports often use the term mudflow to describe debris flows, but true mudflows are composed mostly of grains smaller than sand. On Earth's land surface, mudflows are far less common than debris flows. However, underwater mudflows are prevalent on submarine continental margins, where they may spawn turbidity currents.
An "extremely dangerous situation" was unfolding in the Hollywood Hills area and around the Santa Monica Mountains Monday, as a powerful, slow-moving storm triggered mud flows and debris flows ...
The Electron Lahar, also known as the Electron Mudflow, was a lahar in the U.S. state of Washington that descended from the summit and sunset amphitheater on Mount Rainier about 500 years ago. [1] It was named after the unincorporated community of Electron. The extent of the Electron mudflow was about 34 miles (55 km) from Mount Rainier. [2]
Theseed of the disastrous mudslide — which overwhelmed a county-run flood channel and buried some areas in 12 feet of mud —was planted two years ago when the El Dorado fire scorched 22,680 ...
A heavy mudflow carried entire trees down Whitney Creek in Siskiyou County, California, on Tuesday, August 2, prompting the sheriff’s office to issue a Flash Flood Warning in the area.Footage ...