|Written by Nibiru|
|Wednesday, 04 January 2012 16:58|
Recent activity in the vicinity of a dormant 'super volcano' in Germany has left experts worried about a possible eruption. Laacher See Lake near the German city Bonn is a caldera lake and a potentially active volcano.
The eruption from underneath Laacher See Lake could eject billions of tons of magma which in turn could cause widespread devastation in the European continent and even 'short-term global cooling' or ‘volcanic winter,’ say experts. Monitor Volcanic Activity Realtime with Gibiru/Maps.
The caldera was formed after the colossal Laacher See eruption dated to 12,900 years ago. The remaining crust collapsed into the empty magma chamber
below, probably two or three days after the eruption. Pinatubo threw up 10 billion tons of magma, 20 billion tons of Sulfur Dioxide; an estimated 6 km³ of
magma was erupted producing around 16 km³ of tephra. This massive eruption thus had a Volcanic Explosivity Index (VEI) of 6, and was larger than the
colossal 1991 eruption of Mount Pinatuboin the Philippines which also had a VEI of 6 (10 km³ of tephra erupted).
Experts near the Laacher See site have detected carbon dioxide bubbles on the lake's surface and believe the mountain in Germany could be active again.
About 230 eruptions have occurred during the past 730,000 years. The latest eruptions formed the Ulmener, Pulvermaar, and Strohn maars around the end of the Pleistocene and the beginning of the Holocene.
Nevertheless, scientists say that super-eruptions occur so infrequently that even with the best-studied supervolcanic hot spots, experts only know about two or three at most that have occurred there, which makes it hard to nail down frequency.
furthermore, since any early humans who saw and survived the eruption of Taupo in New Zealand 26,500 years ago or Toba in Sumatra 74,000 years ago—the most recent known megablasts—did not record any details, experts today have no idea what the precursor signals to a super-eruption might be.
But what about recent mega-quakes that are considered to be able to trigger a super-eruption?
The devastating 2004 Indonesian tsunami, with its death toll of as many as 250,000 people, was caused by the first magnitude-9.0 earthquake since 1967. A succession of smaller but still destructive tremors in Haiti, Chile, and New Zealand — surpassed by this year's magnitude-9.0 quake in Japan — has some researchers wondering whether the number of large earthquakes is on the rise.
Scholars have been researching the correlation between earthquakes as a cause for volcanic eruptions for almost two millennia; in the 1st century, Pliny the Younger wrote about the relationship as a possible cause of theeruption of Mt. Vesuvius in 79 A.D. Similarly, Charles Darwin reported that volcanoes in Chile awoke violently following an earthquake during his visit to Chile aboard the Beagle in 1835.
In recent years, scientists have found out a solid correlation; volcanic eruptions in a given region are far more frequent for the few days following an earthquake than they are otherwise.
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