Web Results

www.reference.com/science/pyroclastic-flow-dangerous-3ed6...

According to Michigan Technological University, pyroclastic flows have reached extreme high temperatures, including flows from the Mt. Pelee eruption that got as hot as 1,967 Fahrenheit (1,075 Celsius). Pyroclastic flow is an extremely dangerous form of lava flow resulting from volcanic eruption.

www.answers.com/Q/Why_is_pyroclastic_flow_dangerous

A pyroclastic flow is more dangerous as they are fast moving ash and lava that can burn. One can also knock down objects. They can leave a thick layer of volcanic rock fragments as well.

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 ...

weather.com/safety/news/2018-06-04-pyroclastic-flows-dangers

Pyroclastic flows are a very dangerous phenomenon that occur during some volcanic eruptions. The speed of these flows, as well as the extremely high temperatures, make them almost impossible to ...

www.answers.com/Q/Why_is_a_pyroclastic_flow_more_dangerous...

A pyroclastic flow is more dangerous as they are fast moving ash and lava that can burn. One can also knock down objects. They can leave a thick layer of volcanic rock fragments as well.

www.actforlibraries.org/why-a-pyroclastic-flow-is-so-dangerous

A pyroclastic flow is so dangerous because it moves so quickly it does not give anyone the opportunity to escape its potential effects. Furthermore it can move uphill as it is driven both by the power of the eruption and by the gravity force of the material behind it.

geology.com/volcanoes/volcanic-hazards

Pyroclastic flows are more likely to follow valleys and other depressions, and their deposits infill this topography. Occasionally, however, the top part of a pyroclastic flow cloud (which is mostly ash) will detach from the flow and travel on its own as a surge. Pyroclastic density currents of any kind are deadly.

en.wikipedia.org/wiki/Pyroclastic_flow

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).

volcanoes.usgs.gov/vhp/pyroclastic_flows.html

Pyroclastic flows vary considerably in size and speed, but even relatively small flows that move less than 5 km (3 mi) from a volcano can destroy buildings, forests, and farmland. On the margins of pyroclastic flows, death and serious injury to people and animals may result from burns and inhalation of hot ash and gases.

www.usgs.gov/faqs/how-dangerous-are-pyroclastic-flows

A pyroclastic flow is a hot (typically >800 °C), chaotic mixture of rock fragments, gas, and ash that travels rapidly (tens of meters per second) away from a volcanic vent or collapsing flow front. Pyroclastic flows can be extremely destructive and deadly because of their high temperature and mobility.