2007-03-11 15:16:03 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
In layman's terms, It's all that pent up pressure wanting to get out.
2007-03-11 15:43:11 · answer #1 · answered by JV 5 · 0⤊ 0⤋
Basically it is the pressure from the magma chamber crushing the rock layers as it moves. Also, it could be from the magma pressure moving the rocks along existing fault planes. The friction would cause vibration - rumbling.
Not all volcanoes rumble or explode. It depends on the type of lava (magma) and the amount of moisture that come in contact with the lava.
-dmh
2007-03-11 23:57:03 · answer #2 · answered by digitalmotorhead 1 · 0⤊ 0⤋
Volcano has a life force that rumbling is the sign of 'active' volcano,
2007-03-11 23:35:57 · answer #3 · answered by Eve W 3 · 0⤊ 0⤋
When a volcano is active, the circulation of magma and/or sudden release of gases cause "mini-earthquakes" below the volcano. Obviously during eruption events, you will see more "rumbling".
2007-03-11 22:22:14 · answer #4 · answered by Steve S 2 · 0⤊ 0⤋