October 2015 – ALASKA - About two years ago, geologists studying an ocean channel near Ketchikan spotted something unusual. It was a submerged volcano, about 150 feet below the surface. It was dormant. The experts estimated it hadn’t erupted for about 10,000 years. Now, scientists have discovered another underwater volcano, near Dixon Entrance, just north of Alaska’s maritime border with British Columbia. “Nothing like that had been mapped in the area before, so we knew then that we had discovered something new,” said Gary Greene, a marine geologist working with the Sitka Sound Science Center. He and a Canadian counterpart found the volcano Sept. 23 during a study of the Queen Charlotte-Fairweather Fault System. That’s been the epicenter of some recent earthquakes. “We had just completed some survey work and we modified our line to go to another place to look. And as we were transiting, we came across this big plume and this big cone where the plume was coming out of,” he said. The plume, made up of methane gas, was being released by a volcanic vent about 3,000 feet below. It stretched up about two-thirds of the way to the ocean’s surface. But Greene said there was no fresh lava — or anything else to worry about. “We worked over the vent, right over the vent. And we’re still around to tell about it. So I think it’s probably OK for mariners,” he said. He said the discovery sheds light on the workings of the Queen Charlotte-Fairweather Fault System, which is offshore British Columbia and Southeast Alaska. It’s where a huge, moving chunk of the Earth’s crust, called the Pacific Plate, rubs up against the North American Plate. “It means that this fault acts as a conduit to deeper in the Earth to places where either magma or fluids that are heated by magma or geothermally heated at depth can migrate up through the fault to the surface,” he said. Tory O’Connell, research director for the Sitka Sound Science Center, said the research is providing “really important new information about earthquake hazards in our area.” “It’s also helping direct future research that will help define the significance of understanding the fluidity of that fault,” she said. Lava and other volcanic fluids lubricate faults, lessening the chance of sudden movement. But that can increase pressure on other areas along the fault, forcing them to jerk forward, causing earthquakes. Greene said the new volcano was found as scientists investigated another underwater hazard. “This is an area that had had indications that there were failures occurring on the slope here. And large failures, that is, large landslides that may general tsunamis,” he said. The new volcano is not alone. Greene said the study found others nearby, but none were active. Several other venting volcanoes have been found along the fault in recent years off the shores of British Columbia. –Alaska Public[/ltr] [ltr]The Extinction Protocol | October 4, 2015 at 2:27 am | Categories: Dormant fault activation, Earth Changes, Earth Watch, Earthquake Omens?, High-risk potential hazard zone, New volcanic activity, Potential Earthchange hotspot, Prophecies referenced, Seismic tremors, Signs of Magnetic Field weakening, Submarine volcanic eruption, Submarine Volcano, Tectonic plate movement, Time - Event Acceleration, Volcanic Eruption, Volcano unrest, Volcano Watch | URL: http://wp.me/p1eYXc-aUt [/ltr]
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Scientists stumble over active underwater volcano in Southeast
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