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www.wired.com/2014/06/amazing-video-of-a-pyroclastic-flow...

A pyroclastic flow from Mayon in the Philippines, seen on September 23, 1984. I've labeled the main parts of a pyroclastic, with the leading surge, main body and accompanying ash cloud.

www.youtube.com/watch?v=V3OB6nrq19c

From Pompeii the Last Day BBC i do not own the video. A pyroclastic surge destroyes the town of Herculanium in 79 AD along with another town called Pompeii.

study.com/academy/lesson/volcanic-hazards-definition-types...

Pyroclastic Surge. A pyroclastic surge is similar to a pyroclastic flow, but it is a low-density flow of volcanic material with a higher proportion of gas to rock. Because these surges of material ...

en.wikipedia.org/wiki/Pyroclastic_surge

A pyroclastic surge, also referred as a dilute pyroclastic density current, is a flowing mixture of gas and rock fragments ejected during some volcanic eruptions.Pyroclastic surge refers to a specific type of pyroclastic current which moves on the ground as a turbulent flow with low particle concentration (high ratio of gas to rock ) with support mainly from the gas phase.

www.forbes.com/sites/robinandrews/2017/01/08/this-is-how-a...

Pyroclastic flows are the signature fireworks of the most explosive kinds of volcanic eruptions. These mixtures of ash, lava blebs and broiling gas are normally at temperatures between 200°C and ...

www.wired.com/2014/01/extraordinary-video-pyroclastic...

Extraordinary Video of Pyroclastic Flows From the Eruption of Sinabung In terms of the destruction they wreak upon the landscape, few volcanic hazards can top pyroclastic flows (or more precisely ...

en.wikipedia.org/wiki/Nue_ardente

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 known as tephra) that moves away from a volcano about 100 km/h (62 mph) on average but is capable of reaching speeds up to 700 km/h (430 mph). The gases can reach temperatures of about 1,000 °C (1,830 °F).

study.com/academy/lesson/the-flow-of-pyroclastic-materials...

Video: The Flow of Pyroclastic Materials. ... A pyroclastic surge is similar to a pyroclastic flow, but it is a low-density flow of volcanic material with a higher proportion of gas to rock ...

www.merriam-webster.com/dictionary/pyroclastic

Lahar is described as flow of pyroclastic material and slurry. — Ryan Gaydos, Fox News, "Guatemala volcano eruption kills at least 65, forces thousands to evacuate," 2 Oct. 2018 Unlike Pompeii, which was only hit by falling volcanic ash, Herculaneum was directly in the path of pyroclastic flows headed to the sea.