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Indonesia’s Anak Krakatau volcano shoots ash, lava

Indonesia’s Anak Krakatau volcano shoots ash, lava

Technology
Indonesia’s Anak Krakatau volcano has spewed a column of ash 1,640 feet into the sky in the longest eruption since the explosive collapse of the island caused a deadly tsunami in 2018By EDNA TARIGAN Associated PressApril 11, 2020, 1:30 PM1 min read1 min readShare to FacebookShare to TwitterEmail this articleJAKARTA, Indonesia -- Indonesia’s Anak Krakatau volcano spewed a column of ash 500 meters (1,640 feet) into the sky in the longest eruption since the explosive collapse of the island caused a deadly tsunami in 2018, scientists said Saturday. Closed-circuit TV from Indonesia's Center for Volcanology and Geological Disaster Mitigation showed lava flares Friday night. The agency said that the volcano was continuously erupting until Saturday morning. A level 2 alert status remained in pl...
Anak Krakatau: Lightning frenzy points to scale of volcanic plume

Anak Krakatau: Lightning frenzy points to scale of volcanic plume

Science
The 2018 eruption of Anak Krakatau in Indonesia was remarkable in many ways.It will be remembered, obviously, for the sudden flank collapse that triggered the tsunami which killed over 400 people on the nearby coastlines of Sumatra and Java.But the event also has been the source of many scientific insights that could inform future hazard assessments.And a new possibility is the potential for the frequency of lightning seen at an eruption to give a simple guide to the height of a volcano's towering plume.It's information that could be of interest to airlines trying to find safe routes for their planes.Giant blocks from Anak Krakatau litter ocean floor Anak Krakat...
Anak Krakatau: Giant blocks of rock litter ocean floor

Anak Krakatau: Giant blocks of rock litter ocean floor

Science
Shattered remnants from the volcano that generated a devastating tsunami in Indonesia a year ago have been pictured on the seafloor for the first time.Scientists used sonar equipment to image the giant chunks of rock that slid into the ocean when one side of Anak Krakatau collapsed. Some of these blocks are 70-90m high. Their plunge into the water produced tall waves that tore across the shorelines of Java and Sumatra on 22 December 2018.Over 400 people around the Sunda Strait died in the nighttime disaster, and thousands more were injured and/or displaced. Media playback is unsupported on your device Researchers have been trying to reconstruct what happened ever since. But all their ...
Anak Krakatau volcano collapse: ‘Warning signs were there’

Anak Krakatau volcano collapse: ‘Warning signs were there’

Science
Anak Krakatau, the Indonesian island volcano that collapsed last December triggering a huge tsunami, did produce clear warning signals before the event.That's the assessment of a German-led team which has reviewed all the data.The scientists say satellites in the months leading up to the catastrophe had observed increased temperatures and ground movement on the volcano.Earthquake and infrasound activity was also detected two minutes prior to the collapse of Anak's southwestern flank.When this mass slid into the sea, it sent a wall of water, up to 4m high, around the Sunda Strait.More than 400 people died in the 22 December tragedy; a further 7,000 were injured and nearly 47,000 were displaced from their homes. ...
Anak Krakatau: Indonesian volcano's dramatic collapse

Anak Krakatau: Indonesian volcano's dramatic collapse

Science
The scale of the dramatic collapse of the Indonesian volcano that led to last Saturday's devastating tsunami in the Sunda Strait is becoming clear. Researchers have examined satellite images of Anak Krakatau to calculate the amount of rock and ash that sheared off into the sea. They say the volcano has lost more than two-thirds of its height and volume during the past week.Much of this missing mass could have slid into the sea in one movement.It would certainly explain the displacement of water and the generation of waves up to 5m high that then inundated the nearby coastlines of Java and Sumatra. How volcanoes can trigger tsunamis Indonesia tsunami: 'I clung to a bench' Indonesia's disaster agency says more than 400 people are c...