Krakatoa - SpeedyLook encyclopedia

The eruption of August 27th, 1883

Until this fateful day, Krakatoa was an island which was 9 km long on 5 km broad. It was covered with a typical luxuriant vegetation of the wet tropical areas.

Sleeping since 1680, Krakatoa awoke on May 20th 1883. The activity decrease during a few weeks, but, on June 19th, of new explosions occur. The boats however continue to borrow the strait of the Probe: that which spends on August 14th sails in the darkness during four hours so much the emissions of ashes are thick.

The apocalypse begins the August 26th at 1 p.m.: a violent explosion is heard with more than 50 km of the volcano, is followed of another, even the stronger around 2 p.m., then of a series of detonations unceasingly more violent until around 5 p.m. The 14 hours explosion was accompanied by fantastic projections of ashes of which a part is propelled to more than 27 km height and of which another part falls down, recovering all in a radius of 160 km around Krakatoa, plunging all this area in one night total.

To 10:02, the August 27th, comes finally an appalling explosion, the noise most extremely heard by human ears is heard in all the the Indies Dutchwomen of course, but also in the center of the Australia, Alice Springs, and in the south-west of the Indian Ocean, in the island of Rodrigues, located respectively at 3.500 and 4.800 km of Krakatoa. In a radius of 160 km around the volcano, the night is total during twenty-two hours, some windows burst, of the gas burners die out.

A colossal sea (as high perhaps as a coconut) on several occasions breaks August 26th and 27th on the coasts of Java and Sumatra. In the low areas bordering the strait of the Probe, all is swept, destroyed, twisted, carried by monstrous waves coming the ones after the others.

In Merak, a wave of 46 m broke on the city; when it was withdrawn, nothing indicated that the place was ever inhabited. To Teluk Betung, large port of the area of Sumatra, water went up to 22 m, levelling all.

An abnormal oscillation of water was recorded by the marigraphs until in the the Bay of Biscay and the Manche, with: 18000 km of the place of the catastrophe.

The noise of the explosion was heard on approximately a twelfth of the surface of the ground what would make of it the sound phenomenon most important of the human history.

Consequences of the eruption

The plume of volcanic ash went up to 40 km in the atmosphere, achieves several times the turn of the sphere, and spread sufficient particles to lower the world average temperature of 0,25°C the following year. This dust was also at the origin of the blazing sunsets, then red wine color which inspired many artists, as well as colorings unusual sharp of the moon (ex: London). In several cities of the the United States, gleams rougeoyantes were taken for fires and one called upon the firemen.

These phenomena, caused by the light diffraction by the pulverized particles of lava assembled in stratosphere, appeared during approximately three years.

But the eruption had beneficial effects on the local environment. One year only after cataclysm, of grass pointed on the ends of saved small islands. Two years later, 26 species of plants pushed there and in 1924, these ground fragments were covered with a dense forest. The close areas like Lampung, unfertile before the eruption, became very fertile. That attracted an important population.

It is estimated in addition that this eruption allowed the survival of the Rhinocéros of Java.

In Java, more than 100 million people live under the constant threat of about thirty Volcan S. But the richness of the grounds allows up to three harvests of annual Riz.

The child of Krakatoa

The following eruptions gave rise to a new cone, Anak Krakatoa (the child of Krakatoa), credit since 1930.

Since, 35 eruptions followed one another, the last having taken place in 1997, and gradually made grow the island. Today, high of 182 m out of 2 km in diameter, Anak Krakatoa offers exceptional possibilities of study to the geologists and to the botanists.

The volcano which changed the course of civilizations?

According to David Keys, corresponding in Archeology for the British daily newspaper The Independent, a preceding gigantic eruption of Krakatoa (February 535 a. J. - C) would be at the origin of separation between the two islands of Java and Sumatra. It should however be noted that this scenario does not correspond to the account more the current of creation of the strait of the Probe nor to the geological observations practiced on the volcanic complex of Krakatoa. According to Keys, the repercussions of the eruption would have darkened the totality of the Earth lasting at least two years starting from this date. This eruption would have rejected such a quantity of dust, water, Soufre and gas in stratosphere that a nuclear kind of Hiver would have reigned on our planet during several years. The fact is that the old sources, as well as dendrochronologic measurements attest weather and climatic disturbances which can correspond to the effects of a powerful volcanic eruption, without however having an exceptional character. A typical acid signal such eruptions was found in the taking away of carrots glacial the Antarctic for the year 542 more or less 17 years. The Arctic carrots got signals minus Nets. The signal was allotted to the Rabaul volcano with mention of the assumption of Krakatoa.

This volcanic cloud would have blocked the rays of the Sun, destroying harvests and leading to the Famine, which would have involved massive exoduses and invasion S, in particular those of the Avars since the weakened Mongolia until Constantinople.

The planet was then delivered to the epidemics, in particular the Bubonic plague, as described in the writings of the monk Evagrius Scholasticus (Évagre the Scholastic), contemporary of the emperor Justinien, which decimated the mankind partly, upsetting in an irremediable way all the political institutions, nuns and social in the whole world.

Keys proposes a series of hypothetical diagrams, whose starting point is this eruption. Its diagrams lead inter alia:

with the emergence of the Islam,
with the foundation of the modern Judaïsme,
with creation of what today is the Pakistan,
with the reunification of the China.
with the collapse of the Maya Civilization.

She would have also exploited a fundamental role in the final decline of the Empire Romain, like the date supposed of died of legendary the King Arthur, in 537. If the existence of a climatic disturbance towards 535 is certain, and if its attribution with volcanicity has strong arguments, attribution in Krakatoa did not cause the unanimity, not more than the will to draw from it a very great number of historical consequences in very varied fields.

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