Podcast
Questions and Answers
What is the origin of the term 'ignimbrite'?
What is the origin of the term 'ignimbrite'?
- From the Latin words for fire and rain (correct)
- From the Latin words for hot ash and rock
- From the Latin words for volcanic eruption and deposit
- From the Latin words for igneous rock and boulder
What characteristic makes pyroclastic surges low density?
What characteristic makes pyroclastic surges low density?
- Slower movement speed
- Flowing downslope
- Higher proportion of gases (correct)
- Higher proportion of solid particles
How do ignimbrites compare to nuee ardente flows in terms of speed?
How do ignimbrites compare to nuee ardente flows in terms of speed?
- Move quicker than nuee ardente flows (correct)
- Have equal speed to nuee ardente flows
- Move slower than nuee ardente flows
- Do not move at all
What is a distinguishing feature of a base surge among pyroclastic surges?
What is a distinguishing feature of a base surge among pyroclastic surges?
What characterizes an ash cloud surge among pyroclastic surges?
What characterizes an ash cloud surge among pyroclastic surges?
What defines a ground surge among pyroclastic surges?
What defines a ground surge among pyroclastic surges?
Why are ignimbrites termed as deposits for pumice flows?
Why are ignimbrites termed as deposits for pumice flows?
What do ignimbrites primarily consist of?
What do ignimbrites primarily consist of?
How do ignimbrites differ in length?
How do ignimbrites differ in length?
What is the main reason for pyroclastic surges being low density?
What is the main reason for pyroclastic surges being low density?
What distinguishes a base surge among pyroclastic surges?
What distinguishes a base surge among pyroclastic surges?
Why are pyroclastic surges extremely dangerous?
Why are pyroclastic surges extremely dangerous?
What is the main characteristic that distinguishes ignimbrites from nuee ardente flows?
What is the main characteristic that distinguishes ignimbrites from nuee ardente flows?
Which type of pyroclastic surge occurs within the ash cloud when it is neither rising nor collapsing?
Which type of pyroclastic surge occurs within the ash cloud when it is neither rising nor collapsing?
