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One of Iceland's largest volcanoes Katla is showing increased signs of activity as observers today reported an increase in the strength of tell-tale earth tremors.
A swarm of earthquakes struck the 9-mile wide volcano, a week after geophysicists warned of an “imminent danger” of an eruption on the island.
The volcano is capable of producing four times the ash of Iceland’s last eruption in May.
Observers believe ‘unusual’ magma movement deep beneath Katla could signal the early stages of activity that could lead to a huge explosion – the depth of the latest earthquakes, that lasted for 5-and-half hours yesterday, was said to be 3.5km beneath the ground.
The earthquake activity around Katla has now been steadily gaining strength over the past five weeks.
The problem with those Icelandic Volcanos is that the moment the clearly show signs to erupt and the moment they erupt is very short. Sometimes there aren't even any signs at all.
Originally posted by BobAthome
Better add this one too the list:
New lava flow breaks out on Kilauea's east rift zone HAWAI'I ISLAND, Hawaii - At 2:05 p.m., HST, this afternoon, the USGS Hawaiian Volcano Observatory (HVO) monitoring network detected the onset of rapid deflation of the Pu'u 'O'o crater floor. Soon thereafter, at 2:20 p.m., lava broke out at the base of the west flank of the Pu'u 'O'o cone. According to Jim Kauahikaua, HVO's Scientist-in-Charge, the breakout points are 0.7 km (0.4 mi) east of the eastern end of the Kamaoamoa fissure that erupted earlier this year, in March 2011, or about half way between Pu'u 'O'o Crater and the eastern end of the Kamomoa fissure. "Interestingly, as the crater floor deflated, lava in the perched lake within Pu'u 'O'o Crater continued to circulate, just as it had over the past several weeks," Kauahikaua noted, "but, by 3:15 p.m., the crater floor and lava lake began to collapse." HVO scientists at the eruption site reported a branched lava flow moving down Kilauea's south flank. The weaker northwest arm was pushing into kipuka and forest, while the higher volume, larger south arm had advanced at least 3 km (1.8 mi) downslope as of 3:50 p.m. The lava flow is entirely within Hawai'i Volcanoes National Park and poses no hazard to residents at this time.