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Tuesday 13 May 2014

History Great eruption of Mount Krakatau

Krakatau is a volcanic archipelago that are still active and located in the Sunda Strait between Java and Sumatra. Krakatau name ever pinned on a volcanic peak there (Mount Krakatoa), which vanish due to eruption itself on 26-27 August 1883. Eruption was so powerful; hot clouds and the resulting tsunami killed about 36,000 people. Until before the date of December 26, 2004, this is the most powerful tsunami in the Indian Ocean region. Cracking noise was heard up in Alice Springs, Australia and the island of Rodrigues near Africa, 4653 miles. Yield is estimated at 30,000 times the atomic bomb that was detonated in Hiroshima and Nagasaki at the end of World War II


The eruption of Krakatoa caused global climate change. The world was dark for two and a half days due to volcanic ash that covered the atmosphere. The sun was shining dim until next year. Scattering of dust visible in the sky Norway to New York

The explosion of Krakatoa is actually still less than the eruption of Mount Toba and Mount Tambora in Indonesia, as well as Mount Tanpo in New Zealand and Mount Katmal in Alaska. However, these mountains erupted deep in the human population is still very small. Meanwhile, when Mount Krakatoa erupted, the human population is dense enough, science and technology has evolved, the telegraph was found, and the submarine cable has been installed. Thus it can be said that while information technology is growing and developing rapidly

Noted that the eruption of Krakatoa was the first major disaster in the world after the invention of the telegraph under the sea. Unfortunately, this progress has not been matched by progress in the field of geology. The geologist was not even able to give an explanation of the eruption

Mount Krakatau PURBA 


Seeing the area of ​​Mount Krakatau in the Sunda Strait, experts estimate that in ancient times there is a very large mountain in the Sunda Strait, which eventually erupted explosively leaving a caldera (a large crater) called Ancient Krakatoa, which is the parent of Mount Krakatoa erupted in 1883. volcano is composed of andesitic rocks

There is a record of the Ancient Krakatoa eruption taken from an ancient Javanese text called the King Library Parwa expected from 416 years BC. Among other things, stated: "There was a voice blaring thunder coming from Mount Batuwara. There is also a frightening shock earth, total darkness, thunder and lightning. Then came the wind and rain storms were terrible and the whole storm darkens the whole world. A great flood came from Mount Batuwara and flows to the east towards Mount Kamula .... When water drowning, Java split into two, creating islands of Sumatra



Berend George Escher geologists and other experts argue that some natural events are told comes from the Ancient Krakatoa, which in the text is called Mount Batuwara. According to the book King Library Parwa, Ancient Krakatoa's height reaches 2,000 meters above sea level, and its shores reached 11 kilometer circle

Due to the great explosion, three-quarters of the body, leaving devastated Ancient Krakatoa caldera (a large crater) in the Sunda Strait. The sides or edges of the crater known as Rakata Island, Long Island and Island Sertung, in other records referred to as the island of Rakata, Rakata Island Small and Sertung Island. The explosion was allegedly responsible for the occurrence of the dark ages on earth. Bubonic plague occurs as the temperature cools. This plague has significantly reduced the number of people on earth.

The eruption is also considered to contribute to the end of the heyday of ancient Persia, the transmutation of the Roman Empire to the Byzantine Empire, the end of civilization of South Arabia, the extinction of a large Mayan city, Tikal and fall of the Nazca civilization in South America that is full of puzzles. Ancient Krakatoa explosion is expected to last for 10 days at an estimated speed of mass regurgitated reached 1 million tons per second. The blast shield has formed a thick atmosphere of 20-150 meters, lowering the temperature by 5-10 degrees for 10-20 years.

EMERGENCE OF MOUNTAIN Krakatau 


Rakata Island, which is one of three the rest of the island of Krakatoa Ancient then grow in accordance with the encouragement of the volcanic bowels of the earth known as Mount Krakatoa (or Mount Rakata) made ​​of basaltic rock. Then, the two emerged from the volcano crater, named Mount Danan and Mount Perbuwatan which then merges with Mount Rakata came first. Unity is the third volcano called Krakatoa


Mount Krakatoa erupted in 1680 produced andesitic lava acid. Then in 1880, Mount Perbuwatan though not actively eject lava erupted. After that time, no further volcanic activity at Krakatau until May 20, 1883. Later that day, after 200 years of sleep, a small explosion at Krakatoa. That would be early signs of the massive eruption in the Sunda Strait. The small explosion was followed by small eruptions that peak occurred on 26-27 August 1883.

 ERUPTION GREAT YEAR 1883 







On the day Monday, August 27, 1883, at exactly 10:20, the mountain explodes. According to Simon Winchester, a geologist who graduated from the University of Oxford UK is also the author of National Geographic said that the blast was the biggest, the loudest voice and the most devastating volcanic event in the history of modern humans. Eruptions voice sounded to 4,600 km from the center of the explosion and can even be heard by one eighth the population of the earth at that time

According to researchers at the University of North Dakota, with the explosion of Krakatoa explosion of Tambora (1815) recorded a score of Volcanic explosivity index (VEI), the largest in modern history. The Guinness Book of Records recorded the explosion of Krakatoa as the most powerful explosion in recorded history

Krakatoa explosion had thrown stones pumice and volcanic ash with a volume of 18 cubic kilometers. Vulkanisnya dust bursts at 80 km. Hard objects are scattered into the air it falls on the plains of Java and Sumatra, even to Sri Lanka, India, Pakistan, Australia and New Zealand

The eruption destroyed Danan Mountain, Mount Perbuwatan and most of Mount Rakata cone where the missing half, making 7 km wide basin and deep as 250 meters. Waves reached as high as 40 feet destroyed villages and anything else that was on the coast. The tsunami was caused not only by the eruption but also the underwater avalanches

Carrying the death toll reached 36,417 people from 295 villages of coastal areas, ranging from Peacock (Attack) to cilamaya in Karawang, West coast to the Cape Screen Bantam Panaitan Island (Ujung Kulon and southern Sumatra. At Ujungkulon, incoming flood to 15 km to the west. following day until a few days later, residents of Jakarta and Lampung hinterland no longer see the sun. Tsunami caused even creeping up to the coast of Hawaii, Central America and the west coast of the Arabian Peninsula 7 thousand kilometers away



 EMERGENCE OF CHILDREN Krakatau 



Starting in 1927, or approximately 40 years after the eruption of Mount Krakatoa, the volcano emerged known as Anak Krakatau from the ancient caldera region is still active and still growing in height. The high growth rate of about 20 inches per month. Every year it becomes more about 20 feet tall and over 40 feet wide. Another note to mention the addition of about 4 cm per year and if calculated, then the addition of a 25-year high achieving children Rakata 7,500 inches or 500 feet higher than 25 years earlier. The cause of the high mountain was caused by the material that comes out of the belly of the new mountain. Currently Anak Krakatau reaching a height of around 230 meters above sea level, while the height of Mount Krakatau previously had 813 meters above sea level



According to Simon Winchester, despite what happened in the life of Krakatoa which used to be very frightening realities of geology, seismic and tectonic in Java and Sumatra strange will ensure that what used to happen at some point will happen again. No one knows exactly when the Son of Krakatoa will erupt. Some geologists predict eruptions will occur in between 2015-2083. However, the effects of the earthquake in the Indian Ocean base at December 26, 2004 also can not be ignored



According to Professor Ueda Nakayama one Japanese national expert volcano, Anak Krakatau is still an active and relatively safe, although there is often a small eruption, there are only certain times of the tourists are prohibited from approaching the area because of the danger of lava that spewed out of the volcano. Other experts said there was no plausible theory of Anak Krakatoa will again erupt. Even if there are at least 3 or more centuries after 2325 AD But clearly, the number of victims affected more powerful than the previous eruption



Extra: To the memory of how great the eruption of Krakatoa, in 2006 made ​​a film about the eruption of Krakatoa, entitled "The Last Days", this film was produced / created by the BBC British, directed by Sam Miller. Actually there are a lot of movies, only the latest is The Last Days.

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