Stratovolcano elevation: 2968 m
Central Java, Indonesia: 7.54°S, 110.44°E
Merapi, a steep stratovolcano north of Central Java’s capital Yogyakarta, is Indonesia’s most active volcano. It erupts on average every 5-10 years and is feared for its deadly pyroclastic flows – avalanches of hot rocks and gas that are generated when parts of new lava domes constructed during eruptions in the summit crater collapse and slide down the mountain’s steep flanks.
The name “Merapi” from old Javanese language means “the one making fire” is a popular name for volcanoes: another volcano with the same name Merapi is in the Ijen Massif in East Java and similarly called volcano “Marapi” lies on Sumatra Island.
Tag: supervolcano
Merapi Volcano Ash Eruptions.
Merapi is the most active stratovolcano in Indonesia and has erupted regularly since 1548. Smoke can be seen emerging from the mountaintop at least 300 days a year.
The Yellowstone Caldera
The Yellowstone Caldera is the volcanic caldera located in the United States, The Yellowstone Caldera sometimes referred to as the Yellowstone Supervolcano. The caldera is located in the northwest corner of Wyoming. The major features of the caldera measure about 55 by 72 km).
The caldera formed during the last of three supereruptions over the past 2.1 million years:
- the Huckleberry Ridge eruption 2.1 million years ago (which created the Island Park Caldera and the Huckleberry Ridge Tuff);
- the Mesa Falls eruption 1.3 million years ago (which created the Henry’s Fork Caldera and the Mesa Falls Tuff);
- the Lava Creek eruption approximately 630,000 years ago (which created the Yellowstone Caldera and the Lava Creek Tuff).