Recently, Mount Ibu erupted again, sending ash 4 km high, as streaks of purple lightning flashed around its crater.
About Mount Ibu:
The Ibu volcano is an active stratovolcano located along the NW coast of Halmahera Island in Indonesia.
Ibu's activities follow a series of eruptions of different volcanoes in Indonesia, which sits on the Pacific "Ring of Fire" and has 127 active volcanoes.
What is Stratovolcano?
Stratovolcano is also called a composite volcano.
Characteristics:
This volcanic landform is characterized by a conical shape formed by layers of volcanic material deposited during successive volcanic eruptions.
These volcanoes tend to slope gently at the base but rise quickly near the summit to form tall mountain peaks.
They are typically found above subduction zones, and they are often part of large volcanically active regions, such as the Ring of Fire that frames much of the Pacific Ocean.
These are build up on height by layering lava, ash and tephra. By definition, they have alternating layers of pyroclastic and lava.
Examples for Stratovolcano are Nevado del Ruiz Volcano and Ubinas Volcano (Andes Mountains of Colombia).
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