Anak Krakatau volcano now a quarter of its pre-eruption size

Plumes rise from Mount Anak Krakatau as it erupts in the Java Strait, Indonesia on Sunday, Dec. 23, 2018. A deadly tsunami followed an eruption and apparent undersea landslide on the volcano, gushing ashore without warning during a busy holiday weekend. (Nurul Hidayat/Bisnis Indonesia via AP)

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

JAKARTA, Indonesia — 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 meters (1.4 billion-2.4 billion cubic feet) and lost 150-180 million cubic meters (5.2 billion-6.3 billion cubic feet) of volume since the Dec. 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 kilometers (186 miles) of coastline in Sumatra and Java. More than 420 people died in the waves that were 2 meters (6.6 feet) or higher and 40,000 were displaced.

The center said that the crater peak was 110 meters (360 feet) high as of Friday compared with 338 meters (1,108 feet) 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 (less than a mile) 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.

Peaple also read these

China affirms climate pledge after Trump rolls...

Mar 29, 2017

China's government says it will stick to its promises to curb carbon emissions after President...

'Silk Road' plan stirs unease over China's...

May 11, 2017

China's plan to build a "new Silk Road" of ports, railways and roads to expand trade across Asia...

Trade groups appeal to Beijing to postpone...

May 15, 2017

Global business groups asked China to postpone enforcing a cybersecurity law they say violates its...

Computer wins 2nd game against Chinese go champion

May 25, 2017

A computer that plays go has won a second game against China's top player in a match authorities...

Stock markets slide as tech earnings underwhelm

Jul 28, 2017

Asian, European shares slide as concerns spread over Wall Street's tech sell-off

Sign up now!

About Us

SainsKini is established to address and cover all notable science and technology discoveries made in the region and properly credit them for the whole world to acknowledge.