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World Volcano Activity UPDATE !!! MARAPI AGAIN!!! KATLA AGAIN!!! SWARM STARTING IN ICELAND DORMANT VOLCANO Bláfjoll!!!
Ms Sans Serif
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[quote:Luisport:MV8xNzU0NjcwXzI5Mzc0MjQ0XzFDM0I4QkI=] This is from Wired.com Eruptions blog: Santorini, Greece The seismicity at Santorini in Greece continues – however, the situation has become confusing as there have also been a number of earthquakes nearby between Santorini and Crete that have gotten people’s attention as well. However, regarding the volcano in question, the most important news was some of the first pieces of information about what might be happening at Santorini. An article in a Greek newspaper this weekend has information from Greek scientists watching the volcano. The article mentioned that the caldera has seen ~1 cm/yr deflation between 1993-2010, but since then, the caldera has inflated slightly. The inflation is to the north side of the caldera and seems to be correlated with seismic swarms. Carbon dioxide emissions are currently at 39 tonnes/day, which is relatively low in the grand scheme of volcanoes (usually we think hundreds of tonnes/day), but is a change for Santorini. The seawater in the caldera has also been warming, although the extent of this warming is not mentioned. Finally, in the most ambiguous piece of information, an intrusion has been inferred at 4 km depth north of Nea Kameni where the seismicity is centered. The volume has been listed at “107 cubic meters”, however I am fairly confident that it should be 107 cubic meters, which is a fairly small volume. Take all of this news in total, and it does appear that magma is intruding under Santorini – the question remains: will it erupt and if so, how large of an eruption might we expect. [/quote]
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