Are there a lot of earthquakes around volcanoes?



  1. 0 Votes

    Earthquakes around volcanoes are not an uncommon occurence.  In fact they may be used to predict an eruption. 

    There are two types of volcanic earthquakes: volcano-tectonic earthquakes and long period earthquakes. 

    A volcano-tectonic earthquake is caused by the injection or withdrawl of magma from solid rock, creating stress.  A long period earthquake is when magma is injected into the surrounding rock and is sustained, indicating high gas pressure; these are the earthquakes that may predict an eruption. 

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