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Indonesia’s Mount Anak Krakatau volcano has been puffing white smoke the last few days, and scientists are warning locals and tourists to keep away. That could mean that the long suspected eruption of the world’s most famous volcano could be imminent. Actually, this volcano is the remnant of the biggest blast ever recorded on Earth. That was the 1883 eruption of Mount Krakatoa. From the ruins of that gigantic crater left in the land has come forth what is now known as the Anak Krakatau volcano—literally “Krakatoa’s Child.” In the time since the original eruption, scientists have gotten much better at predicting when a volcano will have a catastrophic eruption, distinguishing it from the many smaller eruptions which do not harm the local population or environment. One of the telltale signs is sudden and increased activity like what scientists are seeing in this past week at the Anak Krakatau volcano. Of course, not wanting to take unnecessary chances, scientists have to balance warning off residents with calling a false alarm. That’s why this recent warning is so significant. Seismologists have learned to read the signs to an astonishingly accurate degree and have a tremendous track record for getting it right. So, the world may be close to once again hearing the loudest sound ever recorded. And this time, the spectacular show will be caught on tape! The volcano remains on level 3 alert
The island exploded in 1883, killing approximately 40,000 people, although some estimates put the death toll much higher. The explosion is considered to be the loudest sound ever heard in modern history, with reports of it being heard nearly 3,000 miles (4,800 km) from its point of origin. The shock wave from the explosion was recorded on barographs around the globe with With a Volcanic Explosivity Index (VEI) of 6,[3] the eruption was equivalent to 200 megatons of TNT (840 PJ) – about 13,000 times the nuclear yield of the Little Boy bomb (13 to 16 kt) that devastated Hiroshima, Japan, during World War II and four times the yield of the Tsar Bomba (50 Mt), the largest nuclear device ever detonated.
The pressure wave generated by the colossal final explosion radiated from Krakatoa at 1,086 km/h (675 mph).[3] It was so powerful that it ruptured the eardrums of sailors on ships in the Sunda Strait[4] and caused a spike of more than two and half inches of mercury (ca 85 hPa) in pressure gauges attached to gasometers in the Jakarta gasworks, sending them off the scale.[5] The pressure wave radiated across the globe and was recorded on barographs all over the world, which continued to register it up to 5 days after the explosion. Barograph recordings show that the shockwave from the final explosion reverberated around the globe 7 times in total.[2] Ash was propelled to a height of 80 km (50 mi)
In the years before the 1883 eruption, seismic activity around the volcano was intense, with some earthquakes felt as far as Australia. Beginning 20 May 1883, three months before the final explosion, steam venting began to occur regularly from Perbuatan, the northernmost of the island's three cones.
Originally posted by NerdGoddess
My grandpa said if that happened could you imagine the price of food after such an event? Thats something to think about.
What happend back there at Krakatoa was that the volcano exploded, see your first article, violently and it generated a huge tsunami. It's the tsunami that killed most people and not the eruption (tephra ejection or toxic gasses).