Indonesia raises warning level for anak krakatau volcano

Indonesia raises warning level for anak krakatau volcano

After the tsunami that killed more than 430 people, indonesian authorities raised the warning level for anak krakatau volcano. During an eruption of the volcano in the sundastrabe a part of the crater was broken off.

The sliding of the earth mass had then triggered a tsunami on saturday. In addition, the prohibited zone around the volcanic crater has been extended to five kilometers, according to the disaster control authority in jakarta. According to spokesman sutopo purwo nugroho, clouds of smoke and heavy ash were emitted the day before the incident. The ash cloud was blown over the cities of serang and cilegon in the province of banten on java on wednesday. The ash is said to be harmless, but people in the affected areas should wear protective masks and goggles. Due to the volcanic ash in the air, all aircraft whose route normally passes over the volcano have been diverted, according to the air control authority.

The tsunami triggered by the volcano had caught the people on the indonesian islands of sumatra to the east and java to the west of the sunda strait completely off guard. According to figures so far, at least 430 people lost their lives. Residents still considered missing. Thousands of people were made homeless by the floods.

The president of the german red cross, gerda hasselfeldt, appealed on thursday for donations for the aid mission in indonesia. This is the third time this year that the inhabitants of the southeast asian country have been severely affected by a natural disaster. People need medical aid and emergency shelter, as well as basic necessities such as "water, blankets, sleeping mats and hygiene articles," hasselfeldt told the "saarbrucker zeitung" newspaper.

Any early warning systems for tsunamis that were installed in the region after the gigantic tsunami in december 2004 did not work because they only react to earthquakes. In the case of anak krakatau, however, the landslide into the sea caused a wall of water to build up that hit the coast after a few minutes. A strong flood in the wake of the full moon intensified the force of the water. In satellite imagery from 24. In december, the huge break-off point at the southwestern crater flank of anak krakatau was visible.

Anak krakatau is called "child of krakatau" in indonesian, because the volcano was formed at the place in the sea where krakatau almost completely destroyed itself in a gigantic eruption in 1883. That eruption is considered the most violent and one of the most serious in the world. Around 36.000 people died at the time due to the tsunami that accompanied it. In addition, the krakatoa spewed out 18 million cubic kilometers of rock and ash – their particles in the air temporarily influenced the climate on the entire earth.

The sea between sumatra and java, like the rest of the island nation, lies on the pacific ring of fire, the most geologically active zone on earth, where volcanic eruptions and earthquakes occur constantly. At that particularly explosive point in the sunda rift, a new mountain of lava built up. The crater of the "child" emerged from the water surface in 1927. According to experts, the rapid growth of the volcano and its continuing activity increase the risk of eruptions at the crater and thus further tsunamis. Anak kracatau had erupted several times in recent years, showing increased activity since june of this year.

In another region along the ring of fire, a volcano also put residents on alert. In the philippines, to the northeast of indonesia, mayon, the most active fire mountain there, spewed ash columns several hundred meters high into the sky.

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