Krakatoa is a volcano is still active and is in the Sunda Strait between Java and Sumatra. The volcano erupted on August 26, 1883. The explosion was very powerful and the resulting tsunami killed about 36,000 people. As of December 26, 2004, tsunami is a greatest.Krakatau eruption voice to be heard in Alice Springs, Australia and the island of Rodrigues near Africa, 4653 miles. Yield is estimated at 30,000 times that of the atomic bomb that exploded at 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, 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 invented, and
subsea cable already installed. Thus it can be said that at the time of information technology is growing and developing rapidly.Noted that the eruption of Krakatoa was the first major disaster in the world after the discovery of the submarine telegraph. Progress is, unfortunately, not been matched by progress in the field of geology. Geologists now were not even able to give an explanation of the eruption.Mount Krakatau AncientSeeing
the area of Mount Krakatau in the Sunda Strait, experts estimate that
in ancient times there is an enormous mountain in the Sunda Strait
which eventually erupted explosively leaving a caldera (crater large)
called Ancient Krakatau, which is the parent of Mount Krakatoa erupted
in 1883. The mountain is composed of andesitic rocks.Notes
on Ancient Krakatoa eruption taken from an ancient Javanese text called
the King Library Parwa thought to date from the year 416 AD. It contained among other states:"There
is a sound of thunder boomed 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 into east towards Mount Kamula .... When the water drowning, Java separated into two, creating the island of Sumatra. "Geologists B.G. Escher
and several other experts found a natural occurrence narrated from
Ancient Krakatau, which in the text is called Mount Batuwara. According
to the book Parwa King Library, the Ancient Krakatoa's height to 2,000
feet above sea level, and its shores reached 11 kilometer circle.Due
to the great explosion, three-quarters of the body Ancient Krakatoa was
destroyed leaving a caldera (crater large) in the Sunda Strait. The
sides or edges of the crater known as Rakata Island, Long Island and
Island Sertung, another record called the island of Rakata, Rakata
Island Small and Sertung Island.The eruption was allegedly responsible for the occurrence of the dark ages of the earth. Bubonic plague due to cool temperatures. Pestilence This significantly reduces the number of people on earth.Development of Mount KrakatauRakata
Island, which is one of three islands of Krakatoa Ancient rest then
grow in accordance with the encouragement of the volcanic bowels of the
earth known as Mount Rakata made of basaltic rock. Then,
the two emerged from the volcano crater, named Mount Danan and Mount
Perbuwatan are then fused 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 actively secretes though not erupt lava. After that, there is no volcanic activity at Krakatau until May 20, 1883. On that day, after 200 years of sleep, there was a small explosion of Krakatoa. That would be the early signs of the massive eruption in the Sunda Strait. Small explosion was followed by small eruptions which culminates on 26-28 August 1883.The eruption of Mount KrakatauOn the day of 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 National Geoghrapic author also said that the blast was the
biggest, loudest and volcanic events are most devastating in the history
of modern man. The
voice sounded eruptions until 4600 km from the center of the eruption
and can even be heard by the 1/8 peduduk earth at that time.According
to researchers at the University of North Dakota, the explosion of
Krakatoa with Tambora (1815) recorded a value of Volcanic explosivity
index (VEI), the largest in modern history. While
the book The Guinness Book of Records recorded the explosion of
Krakatoa as the most powerful explosion in recorded history.In addition, the explosion of Krakatoa had thrown stones pumice and volcanic ash with a volume of 18 cubic kilometers. Bursts of dust vulkanisnya mencavai 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.Destroyed
by the eruption of Mount Danan, Mount Perbuwatan and part of Mount
Rakata cone, half lost, making the basin 7 km wide and 250 meters deep. Waves reached as high as 40 feet destroyed villages and what is 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 coastal villages from
Merak (Attack) to cilamaya in Karachi, the west coast of Banten to Cape
screens in Pulai Panaitan (Ujung Kulon and southern Sumatra. At
Ujungkulon, flood water entered up 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 waves generated
even creeping up to the coast of Hawaii, Central America and the western
coast of the Arabian Peninsula 7 thousand kilometers away.Small Krakatau Starting
in 1927 or about 40 years after the eruption of Mount Kakatau, emerging
volcano, known as the volcano's caldera of the ancient region that is
still active and still growing in height. Surrounding area high growth rate of 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 tiggi about 4 cm per year and if
dihitu, then within 25 years the addition of high-achieving children
rakata 7500 inches or 500 feet higher than 25 years earlier. The cause of the high mountain was caused by material that came out of the belly of the mountain new. Currently
the volcano reaches a height of around 230 meters above sea level,
while Mount Krakatau previously had high 813 meters above sea level.According
to Simon Winchester, despite what happens in the life of Krakatau which
used to be very scary realities of geological, seismic and tectonic in
Java and Sumatra, the strange will ensure that what used to happen at
some point will happen again. No one knows exactly when the volcano will erupt. Some geologists predict eruptions will occur in between 2015-2083. However, the effect of the earthquake on the Indian Ocean on December 26, 2004 also can not be ignored.According
to Professor Ueda Nakayama vulcanologist one Japanese national, Small
Krakatau is still an active and relatively safe although there is often a
small explosion, there are only certain times when the tourists are
prohibited from approaching the area because of the danger that spewed
lava volcano. Other experts said there was no plausible theory of small Krakatau will be re-erupted. 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 eruptions.
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