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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.
Drilling or an earthquake [36] [30] in the Porong subdistrict of East Java province, Indonesia, may have resulted in the Sidoarjo mud flow on 29 May 2006. [37] [38] [39] The mud covered about 440 hectares, 1,087 acres (4.40 km 2) (2.73 mi 2), and inundated four villages, homes, roads, rice fields, and factories, displacing about 24,000 people ...
A series of mudflows occurred in Southern California in early January 2018, particularly affecting areas northwest of Montecito in Santa Barbara County.The incident was responsible for 23 deaths, [4] although the body of one of the victims has never been found. [5]
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 ...
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.
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 ...
Slope material that becomes saturated with water may produce a debris flow or mud flow. However, also dry debris can exhibit flow-like movement. [30] Flowing debris or mud may pick up trees, houses and cars, and block bridges and rivers causing flooding along its path.