Sentences with phrase «pyroclastic flow»
A "pyroclastic flow" is a powerful and dangerous volcanic event where a mixture of hot gases, ash, and rocks rapidly flows down the side of a volcano. It moves incredibly fast, like a superheated avalanche, and can destroy everything in its path. Full definition
Scientists are now watching to see whether the volcano repeats the violent eruptions of 1963, when superheated gases and volcanic material raced down the mountain in a series of pyroclastic flows, killing more than 1000 people.
sciencemag.org
According to Babad Lombok, records of the island written on palm leaves in Old Javanese, Samalas erupted catastrophically before the end of the 13th century, devastating surrounding villages — including Lombok's capital at the time, Pamatan — with ash and fast - moving sweeps of hot rock and gas called pyroclastic flows.
Volcanologists warn that the main hazards of a large eruption are hot and fast - moving avalanches of rocks, dust and gas that can not be outrun, known as pyroclastic flows, as well as mudflows and ashfall.
Worst possible scenario involves pyroclastic flows — currents of hot gas and rock moving at 70 miles per hour
«The magma that originally erupted from the supervolcano had about 1,400 ppm lithium in it,» said Benson, describing a red - hot pyroclastic flow of pumice, ash, crystals, and rock that spread for 50 miles in all directions.
Although this process has no exact analogue on Earth, it can be related to terrestrial pyroclastic flows, which are gas - particle mixtures generated during volcanic eruptions.
That, he said, pointing to a model drawn on his whiteboard, would create a column that would then rain down dangerous pyroclastic flows.
Players race a car down a mountain to escape a roaring pyroclastic flow, dodge toppling buildings during a devastating earthquake and swim for their lives in a raging flood.
The largest of them occurred in the late 6th century, and is believed to have generated pyroclastic flows — that of hot gas, ash and rocks blown out of a volcano — reaching at least 50 kilometers from Rabaul.
The combined effects of pyroclastic flows, volcanic ashes and tsunamis had disastrous results in the region.
Dr Kamata also points out that the ash, lava flow, and the entire picture of violence such as pyroclastic flow, and how the mountain body collapsed should be used for the prevention of future disasters, using the method of hazard maps.
One possibility is that the eruption column of hot volcanic ash, gas and rock fragments now extending into the sky above the summit could collapse into what's called a pyroclastic flow and race down the flanks of the mountain.
Nearly all of them died within the first twenty - four hours, mostly from ash falls and pyroclastic flows — rapidly moving streams of partially liquefied rock and superheated gas at temperatures up to 1,000 degrees, hot enough to melt glass.
«The difference between other volcanoes and Mount Agung is that there are no scientific records about previous eruptions here, only people's experiences,» Syahbana said.In 1963, pyroclastic flows of lava and rocks poured out of the volcano, killing more than 1,000 people and razing dozens of villages.
And the flows can travel at incredibly high speeds down the sides of a volcano; an estimate of the average speed of the pyroclastic flow down the slopes of Mount Saint Helens in Washington State during its 1980 eruption (also Plinian) was around 230 kilometers per hour.
After a wave of hot gas and ash, called a pyroclastic flow, engulfed nearby Pompeii and killed those left in the city, more layers of ash from the eruption buried the buildings and bodies.
The pyroclastic flows themselves, which is what actually killed most of the victims, were well done, Lopes says.
The first explosion did indeed occur around 1 P.M. local time but it wasn't until the next morning that the pyroclastic flows first reached the city.
The mountain erupted on 3 June, sending a pyroclastic flow 4.5 kilometers from the crater.
The Pompeii and circumstance of billowing ash, earthquakes, flaming meteors, tsunami, and pyroclastic flow (look it up) finally adds some liveliness to otherwise steady genericalness, but the poignancy - free special - effects spectacle isn't insanely intense, as it should be, instead evoking green screens and video games.
Description of key volcanic activity, including volcanic ash and pyroclastic flows.
«I've skipped all other reading in favor of this enthralling world of loyalty, betrayal, and pyroclastic flows.»
The volcano last erupted in 1963, during which a pyroclastic flow released from its crater damaged several villages nearby.
In 2010, after 42 years of uninterrupted volcanic activity, the volcano entered a resting phase, ceasing explosive eruptions, pyroclastic flow and lava spilling.
It also involved a pyroclastic flow - a dangerous fast - moving hot cloud of gas, ash and volcanic matter.
Most of the recent activity has been on the north flanks, where lava and pyroclastic flows have stripped the mountain of vegetation.
Pyroclastic flows and material thrown from the volcano tragically killed 78 people living in the nearby communities of Arenal and Pueblo Nuevo.