Volcanic Eruptions are most common in the pacific Ring of Fire, where the molten rock, ashes and gas find ways to escape out of the core of the earth. A volcanic eruption can be of the explosive kind and of the non explosive kind. Explosive Volcanic eruptions occur when there is high gas content in the magma that is generated within the earth and the magma is of a high viscosity. Non explosive volcanoes include the low gas content and low viscosity magma.
The most important cause of Volcanic Eruptions is the need to release the pressure that builds up inside the earth due to the molten magma and gas content. When the gas bubble can no longer fit itself inside the surface it bursts out in the form of lava, ash, rocks and other particles. Volcanic Eruptions are one of the most devastating Weather-related disasters .
Types of Volcanic Eruptions
Volcanic Eruption can be classified into the following types:
- Hawaiian eruptions, which are considered to be of the non explosive types and shoot up a fire fountain of lava and molten material
- Strombolian Eruptions, which are characterized by blasts occurring one after the other. They are of the explosive kinds.
- Vulcanian Eruptions are more explosive than the former ones and the explosions can throw materials several kilometers above the volcanic mountain.
- Pelean Eruptions are mainly black and ash flow types and are considered to be explosive and extremely violent.
The other types of volcanic eruptions are Plinian, Phreatomagmatic and Phreatic.
Effects of Volcanic eruption
Some of the effects of volcanic eruptions are as follows: