They are characterized by being little dense (since they have few concentrations of solid particles), energetic and turbulent. For example, according to its density, that is, the gas / solid particle ratio it has and the deposits it forms, we can find: Pyroclastic surges Pyroclastic flows can be classified according to their composition, according to the deposits they originate, according to how they originated and more. Collapse occurs when the lava dome is so large that it becomes unstable and culminates in an explosion.
These solid particles are called pyroclasts or tephras, and they are but fragments of solidified magma that have been expelled from the volcano. Once the pyroclastic flow is expelled from the erupting volcano and reaches the earth's surface, it moves along the ground at a speed that varies in the range of ten to hundreds of meters per second.Īs we mentioned in the previous paragraph, the pyroclastic flow is composed, among other things, by solid particles. Specifically, the pyroclastic flow temperature it is between 300 to 800 ° C. It is a mixture that arises during volcanic eruptions and is made up of gases and solid particles at high temperatures. If you live near a volcano or are simply a volcano fan, don't hesitate to read this interesting article. It is for this reason, that from Green Ecologist, we will dedicate this post to talk about what is pyroclastic flow and how is it formed. However, pyroclastic flows are not, popularly, one of the best known parts of the volcano and, in fact, their presence can bring many unwanted consequences. All these terms refer to the same thing, to the powerful mass of gases and particles that is expelled from the crater of a volcano and travels at great speed. There are many names used to refer to pyroclastic flows: fiery cloud, pyroclastic flow, pyroclastic density current, and more.