Paar dagen geleden nog een filmpje tegengekomen van de uitbarsting op 17 november
[video=youtube;LTZl7P3q06E]http://www.youtube.com/watch?v=LTZl7P3q06E[/video]
mesmerizing
Voor de geïnteresseerden; Een tijd geleden heb ik nog een aantal posts geschreven waarin ik de meest bekende en bijzondere van deze betoverende monsters onder de loep nam.
Check zeker
dit album met fotos die je mond doen open vallen. Zit ook een shot bij van een vorige uitbarsting van de
Etna getrokken vanop het ISS. Dat dit, de
kamchatka, niet geshopt is, is gewoon ongeloofelijk.
Voor zij die vrezen voor de apocalypse, een aantal interessante snippets uit de laatste post ivm supervolcanoes:
- The Siberian traps covered an area twice the size of the united states with lava.
- Iceland was born 16 to 18 million years ago and is still growing. In 1783 Laki, a 40 km (25 mi) long volcanic fissure erupted with poisonous gasses and caused a volcanic winter. It killed more than 6 million people worldwide. It also produced very dangerous thunderstorms that killed a lot of cattle with enormous hailstones. Yet this was only a VEI 6 event (scale goes to 8).
- The Paraná and Etendeka traps, the biggest eruptions in geological history occurred largely in what is now present-day Brazil and Africa and in some places the layer of deposited rock is more than 2 km thick!
- The Yellowstone hotspot created the massive 55 by 72 km (34 by 45 miles) Yellowstone caldera, the largest on earth. The hotspot has left a path of destruction that can be traced back across the US to Canada. Its largest eruption produced 2,500 times as much ash as the 1980 eruption of St. Helens.
- Lake Toba is the largest known explosive eruption anywhere on Earth and led to a volcanic winter with a worldwide decline in temperatures between 3 to 5 °C (5 to 9 °F) for several years. Greenland ice cores record a pulse of starkly reduced levels of organic carbon sequestration. Very few plants or animals in southeast Asia would have survived, and it is possible that the eruption caused a planet-wide die-off. There is evidence that suggest this eruption killed most humans then alive, reducing the world's human population to 10,000 or even a mere 1,000 breeding pairs, creating a population bottleneck in Central Eastern Africa and India that affected the genetic inheritance of all humans today.