In a report on December 29, Indonesiaas Center of Volcanology and Geological Hazard Mitigation said that the height of Anak Krakatau
went from 338 meters (1,108 feet) above sea level to 110 meters (360 feet).
Just when we seemed to have gained better understanding of undersea earthquake-generated tsunamis, Anak Krakatau
unleashed its wrath as a reminder of this 'other' infrequent yet potentially dangerous process that could generate tsunamis.
Mount Anak Krakatau
, or Child of Krakatau, emerged from the sea in 1927 after a massive eruption in 1883 generated a 30-meter tsunami that killed 36,000 people.
Last Saturday, Anak Krakatau
erupted, sending a wall of water two meters high - a tsunami - racing to neighboring Java and Sumatra.
Volcanologists raised the alert of Anak Krakatau
volcano to the second highest level and extended the no-go zone to 5 km from the crater from the previous 2 km after its eruption triggered Saturday's tsunami.
JAKARTA, Dec 27 (Reuters) -- Indonesia on Thursday raised the alert level for the erupting Anak Krakatau
volcano to the second-highest, and ordered all flights to steer clear, days after it triggered a tsunami that killed at least 430 people.
The eruption of Anak Krakatau
, or Child of Krakatoa, a volcano in the Sunda Strait, is believed to have created a landslide on the volcano's slope, displacing a large volume of water that slammed into the islands of Java and Sumatra.
The tsunami was caused by an eruption on Anak Krakatau
, taking many residents by surprise because of the absence of a 'warning' earthquake.
Thick ash clouds continued to spew from Anak Krakatau
, a volcanic island where a crater collapsed at high tide on Saturday sending tsunamis smashing into coastal areas on both sides of the Sunda Strait between the islands of Sumatra and Java.
The tsunami that occurred at 9.27 pm on Saturday (Dec 22) was caused by the eruption of the Anak Krakatau
volcano, which triggered landslides and set off the deadly wave.
Scientists including those from Indonesia's Meteorology and Geophysics agency said the tsunami could have been caused by undersea landslides or those occurring above sea level on the Anak Krakatau
volcano's steep outside slope following the eruption.
Scientists said the disaster could have been caused by landslides above and below the sea on the Anak Krakatau