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Indonesia's Anak Krakatau Volcano, That Triggered Tsunami Earthquake, is Now a Quarter of its Size

Anak Krakatau now has a volume of 40-70 million cubic metres and lost 150-180 million cubic metres of volume since the December 22 eruption and tsunami, according to Indonesia's Center for Volcanology and Geological Disaster Mitigation.

AFP

Updated:December 29, 2018, 12:50 PM IST
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Indonesia's Anak Krakatau Volcano, That Triggered Tsunami Earthquake, is Now a Quarter of its Size
Debris and damaged properties are seen after the earthquake and tsunami hit an area in Wani, Donggala, Central Sulawesi, Indonesia. (Image: Reuters)
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Jakarta: Scientists say Indonesia's Anak Krakatau volcano island, which erupted and collapsed a week ago triggering a deadly tsunami, is now only about a quarter of its pre-eruption size.

Anak Krakatau now has a volume of 40-70 million cubic metres and lost 150-180 million cubic metres of volume since the December 22 eruption and tsunami, according to Indonesia's Center for Volcanology and Geological Disaster Mitigation.

The analysis shows the scale of the island's collapse, shedding light on the power of the tsunami that crashed into more than 300 kilometres of coastline in Sumatra and Java.

More than 420 people died in the waves that were 2 metres or higher and 40,000 were displaced.

The center said that the crater peak was 110 metres high as of Friday compared with 338 metres in September.

Experts have largely relied on satellite radar images to work out what happened to the volcano because cloud cover, continuing eruptions and high seas have hampered inspections.

The center said it would get more precise results from more visual inspections.

Authorities have warned residents to stay a kilometre away from the coastline of the Sunda Strait, which separates Java and Sumatra, because of the risk of another tsunami.

But experts now say another potential tsunami triggered by the volcano collapsing again would be less severe due to its reduced mass.

Anak Krakatau, which means Child of Kratakau, is the offspring of the infamous Krakatau volcano whose monumental eruption in 1883 triggered a period of global cooling.

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