When water interacts with magma, it can dramatically increase the explosivity of the eruption. However, water in the eruption cloud can also increase the rate at which the particles aggregate into ...

There are more than 1,000 active volcanoes dotted around our planet, but only a select few have produced unimaginably colossal eruptions, earning themselves the title of supervolcano. Find out more ...

See a slide show of the worst volcanic disasters in history and learn what caused the casualties. How do you measure the size of a volcanic eruption? Just as seismologists measure the size of an ...

The varying scale and force of certain volcanic eruptions -- currently being witnessed at sites in Chile and Mexico -- are directly influenced by the levels of gaseous matter within magma inside a ...

Explore the Volcanic Explosivity Index and the implications of small explosive eruptions from Kilauea in 2008. Houghton, B.F., Swanson, D.A., Rausch, J., Carey, R.J ...

Logarithmic scale, ...