volcanoes Volcanoes : Magma rises Siesmologists have discovered the causes behind the 1912 Novarupta emission on the Alaskan Peninsula. A group of seismologists introduced an organization of seismometers around the Katmai Volcanoes on the Peninsula to recognize what caused the Novarupta ejection that heaved gigantic measures of debris and magma. In light of the information gathered during the range of four years, the group has tracked down that the magma plumbing framework underneath the gathering of Katmai volcanoes caused the Novarupta ejection. The katmai volcanoes are situated around 6 miles (10 km) from Novarupta, which heaved debris and magma into the air for around three cubic miles and it fell a space of 3,000 square miles, as per OurAmazingPlanet. The Katmai volcanoes are situated in the subduction zones, where one structural plate moves beneath one more plate at the united limits. These zones are noted for higher...