161 km
Yes, it was.
Yes a pyroclastic flow did destroy pompeii yes it did it flattened the Italian village of pompeii. it is a mixture of hot gas volcanic rock and ash
Tephra flow is fragments of volcanic rock and lava. Pyroclastic flow is fast moving current of hot gas and rock.
An explosive volcanic eruption. Pyroclastic flow is a mixture of fast flowing hot gases that travel down and away from the eruption.
Pyroclastic flow can travel at speeds as great as 450 MPH (700 KM/h)
Very quickly. A pyroclastic flow can approach half the speed of sound. People exposed to the temperatures inside a pyroclastic flow can die almost instantly.
No. Most pyroclastic flows don't go for more than a few miles.
Pyroclastic flow.
Beware the pyroclastic flow!
Pyroclastic flow
The most dangerous thing an erupting volcano can produce is a pyroclastic flow. A pyroclastic flow produces hot ash and gas that is 1000 degrees Celsius in temperature. This toxic cloud can move as fast as 500 miles per hour.
Pyroclastic Flow