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- Dictionaryla·har/ˈlähär/
noun
- 1. a destructive mudflow on the slopes of a volcano.
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A lahar ( / ˈlɑːhɑːr /, from Javanese: ꦮ꧀ꦭꦲꦂ) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water. The material flows down from a volcano, typically along a river valley. [1]
Lahar, mudflow of volcanic material. Lahars may carry all sizes of material from ash to large boulders and produce deposits of volcanic conglomerate. Lahars may be the result of heavy rain on loose ash material such as deposits of nuées ardentes (dense clouds of gases charged with incandescent.
Nov 11, 2019 · A lahar is a violent and dangerous debris flow or mudflow composed of a slurry of rocky debris, pyroclastic material, and water. Typically, the materials flow from a volcano down along a river valley. The word lahar is derived from the Javanese language, namely from the word wlahar.
What are lahars? Lahars are mudflows created when water (from rain or meltwater from glaciers) and volcanic ash mix. This deadly combination can have devastating results on the surrounding area. When lahars settle they can be metres thick and as hard as cement. Lahars can occur long after a volcanic eruption. Lahar at Merapi Volcano. Watch on.
The meaning of LAHAR is a moving fluid mass composed of volcanic debris and water.
LAHAR definition: 1. a large stream of mud, rocks, and water from a volcano that becomes hard when it stops moving 2…. Learn more.
May 12, 2023 · A lahar is a complex natural event characterized by a viscous, fast-moving flow of materials, predominantly originating from a volcanic source. They can be classified into two main categories: debris lahars and mudflow lahars.
Mar 29, 2024 · Volcanic debris flows that originate at potentially active volcanoes are called lahars. Lahars are like debris flows in non-volcanic terrain but can most notably differ in origin and size. Primary lahars occur during eruptions and may have novel origins such as...
A wet mass of volcanic fragments flowing rapidly downhill. Lahars usually contain ash, breccia, and boulders mixed with rainwater or with river or lake water displaced by the lava flow associated with the volcano. The deposit produced by such a flowing mass.
The word lahar is of Indonesian origin, but is now routinely used by geologists worldwide to describe volcanogenic debris flows. Nearly all of Earth's largest, most destructive debris flows are lahars that originate on volcanoes.
