seismograms produced by volcano-tectonic earthquakes look like those produced by typical earthquakes (those caused by the motion of tectonic plates at plate boundaries, such as the San Andreas ...

The diagram ... are where tectonic plates pull apart due to convection currents in the mantle. Most constructive plate boundaries are found on ocean floors. Some of these undersea volcanoes ...

It has also urged the evacuation of areas within 14km of the volcano. The graphic below shows how the movement of the Earth's tectonic plates causes volcanoes to be formed, and what triggers a ...