A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively...

active from 1990 to 1995, and a large eruption in 1991 generated a pyroclastic flow that killed 43 people, including three volcanologists. Its highest...

that is ejected during some volcanic eruptions. It is similar to a pyroclastic flow but it has a lower density or contains a much higher ratio of gas to...

topography-draping pyroclastic fall layers, and by pyroclastic density currents (PDCs) (including pyroclastic flows and pyroclastic surges), from which...

atmosphere. This cloud may subsequently collapse, creating a fast-moving pyroclastic flow of hot volcanic matter. Viscous magmas cool beneath the surface before...

In March 1980, a series of volcanic explosions and pyroclastic flows began at Mount St. Helens in Skamania County, Washington, United States. A series...

affected by pyroclastic flows from the volcano. Verbeek and others believe that the final major Krakatoa eruption was a lateral blast, or pyroclastic surge...

caused by pyroclastic flows and lahars, deadly hazards that often accompany explosive eruptions of subduction-zone stratovolcanoes. Pyroclastic flows are swift...

second phase Tsumaya pyroclastic flow deposit which is wholly confined within the pre-Aira basin. The Tsumaya pyroclastic flow buried the pre-Aira topography...

ejecta from a volcanic vent Pyroclastic fall, a uniform deposit of material ejected from a volcanic eruption Pyroclastic flow, a fast-moving current of...

growth, punctuated by brief episodes of dome collapse which result in pyroclastic flows, ash venting, and explosive eruption. The volcano is monitored by...

Stratocones are large cone-shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered...

2013 are showing the volcano emits pyroclastic flows with frequent collapses of its lava domes. Pyroclastic flows at Mayon Volcano, Philippines, 1984...

supplies to the island. A powerful eruption on 30 August generated a pyroclastic flow that resulted in over 800 people killed. The eruption continued until...

Truman was killed in the cataclysmic eruption of Mount St. Helens by a pyroclastic flow that overtook his lodge and buried the site under 150 ft (46 m) of...

rise as high, and suddenly collapses back to the ground, forming a pyroclastic flow, hitting the surface like water from a waterfall, and spreading sideways...

short distances. Sorting by size is more pronounced than pyroclastic surge or pyroclastic flows. Early settling of crystals and lithic fragments near an...

known to occur in pyroclastic flows, which will incinerate everything flammable in their path, and thick layers of hot pyroclastic flow deposits can be...

June 1991) were French volcanologists and filmmakers who died in a pyroclastic flow on Mount Unzen, Nagasaki, Japan, on 3 June 1991. The Kraffts became...

flows destroyed nearby villages from 19 March through 22 March. On 24 March, an explosive eruption created an ash plume and a small pyroclastic flow....

displayed, including weak phreatomagmatism, Plinian eruptions, and a huge pyroclastic flow. Rhyolitic lava domes were extruded some years or decades later, forming...

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...

recorded history. The magma in St. Helens burst forth into a large-scale pyroclastic flow that flattened vegetation and buildings over an area of 230 square...

and fellow volcanologists Katia and Maurice Krafft were killed by a pyroclastic flow. His remains were found four days later and were cremated in accordance...

least 140,000 years ago, resulting from the eruption of Koabiyama pyroclastic flows. The formation of caldera has been associated with at least three...

Ercolano, Campania, Italy. Herculaneum was buried under a massive pyroclastic flow in the eruption of Mount Vesuvius in 79 AD. Like the nearby city of...

gas, allowing it to spread. Pyroclastic flows can often climb over obstacles, and devastate human life. Pyroclastic flows are a common feature at explosive...

from the mountaintop, and several eruptions have caused fatalities. A pyroclastic flow from a large explosion killed 27 people on 22 November 1994, mostly...

eruption had two phases that each included a Plinian fallout and a pyroclastic flow and erupted magmas that were different in composition. An average of...

85 lava flows have been identified, and consist mainly of lava augite-hypersthene-andesite, generally fed from the crater. Pyroclastic flows, characterized...