Do volcanoes produce different kinds of earthquakes?
Yes. A variety of earthquake types can occur at a volcano that is getting ready to erupt. These include earthquakes caused by rocks breaking along faults or fractures, termed tectonic-type earthquakes. Another common type a long-period or volcanic earthquake. These can occur when bubble-filled magma is on the move beneath a volcano. The differences between tectonic- type and volcanic-type earthquakes are so subtle that they can be distinguished only by using seismometers.
