|Walls of the long-since-collapsed Toba volcano on Sumatra island rise behind rice fields. (Picture from: http://news.nationalgeographic.com/)|
|Samosir Island (center) rose|
within the now water-filled
crater of the collapsed Toba
volcano. (Picture from:
Ice cores can provide more detailed evidence about the Earth's climate has changed dramatically in just a few years after the massive eruption of Toba. "There is no uniform global cooling caused by the Toba eruption," said Svensson.
According to him, large temperature fluctuations cooling only found in the northern hemisphere, while in the southern hemisphere warmer. "Global cooling occurred within a short period."
|This shows the bipolar matching of volcanic |
acidity spikes (sulphate) in Greenland and
Antarctic ice cores at around the Toba eruption.
(Pictures from: http://www.sciencedaily.com/)
He said layers of volcanic ash from the eruption of Toba have been found in most parts of Asia. The material is used as a guide eruption of ancient archaeological represent a very important civilization which is considered too old to do carbon dating. "The position of the Toba eruption on the ice core record will be put in the context of climate archaeological finds. This will help explain the critical period of human history," said Svensson. Detail the research is published in the journal Climate of the Past. *** [LIVESCIENCE | MAHARDIKA SATRIA HADI | KORAN TEMPO 4049]
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