📖 what
What is a pyroclastic surge?
VolcanoesVolcanic hazards
Quick Answer
A pyroclastic surge is a fast-moving, turbulent cloud of hot gas, ash, and rock fragments from a volcano.
The Full Story
Unlike a dense pyroclastic flow, a pyroclastic surge is more dilute and can sweep over ridges and obstacles. It can move at very high speeds and is intensely dangerous because of its heat and force. Surges can form from collapsing eruption columns or explosive lateral blasts. The 1902 eruption of Mount Pelée on Martinique produced one of the deadliest pyroclastic surges in recorded history.
Key Facts
1.Pyroclastic surges are less dense than pyroclastic flows
2.They can overtop hills and other barriers
3.The 1902 Mount Pelée eruption killed about 30,000 people in Saint-Pierre
YouTube Angle
Suggested video title for this topic:
"The deadly volcanic cloud that can race over hills"