Magamtic earthquakes are caused by the movement of magma within the volcano. They are often shallow and can damage property and set off landslides and rockfalls. They also indicate that the volcano is active and may be preparing for and eruption.

What are the 3 types of volcanic earthquakes?

According to Minakami (1959a, b, 1960) or Tazieff and Sabroux (1983), volcanic earthquakes are classified into three groups: A-type earthquakes with foci between 1 and 10 km deep; B-type earthquakes with foci at depths of 1 km or less; and explosion-type earthquakes taking place at the very surface of the Earth.

What is a magmatic explosion?

Magmatic eruptions produce juvenile clasts during explosive decompression from gas release. They range in intensity from the relatively small lava fountains on Hawaii to catastrophic Ultra-Plinian eruption columns more than 30 km (19 mi) high, bigger than the eruption of Mount Vesuvius in 79 that buried Pompeii.