Random rumblings: hydrothermal vents re-colonized from afar, Yellowstone swarm, Krakatoa, Mauna Kea testbed, and MSH spiders to Chaitén 2 March 2010Posted by admin in Chaitén, Chile, current research, Hawaii, Indonesia, Krakatau, United States.
Tags: Anak Krakatau, astrobiology, Chaitén, Chile, Hawaii, hydrothermal vents, Mauna Kea, Yellowstone
Hydrothermal vents sometimes colonized from afar (Science News) – ‘Field studies at a hydrothermal vent system where all life was snuffed out by a massive undersea volcanic eruption reveal that these habitats can be repopulated in a matter of months by larvae from distant vents. … Water samples taken near the vents in May 2006 contained the larvae of Ctenopelta porifera, a rock-clinging gastropod called a limpet. By July, these fast-growing creatures had colonized the rocks around the eruption-sterilized vents; by October, they were mature and reproducing. … the nearest hydrothermal system known to host that species is located more than 300 kilometers away.’
Recent Yellowstone earthquake swarm was the second-largest ever (Denver Post) – ‘The Yellowstone earthquake swarm that began on Jan. 17 and ended on Feb. 11 was the second-largest earthquake swarm ever at Yellowstone National Park, according to scientists at the University of Utah. … Not only was the swarm the second-largest ever recorded at Yellowstone but it was longer in time and included more earthquakes than last year’s swarm beneath Yellowstone Lake, which occurred in December 2008 and January 2009, according to the scientists.’
Krakatoa’s child smokes with magic fire in belly (The Age) – ‘As the boat approached Anak Krakatau, the atmosphere was eerie. The smoke of the seasonal forest fires drifting from Sumatra made visibility poor and, before we even sighted the volcano, we heard it: a deep, otherworldly rumble. Then, out of the haze, materialised the cone of Anak Krakatau. Within minutes, thick grey ash billowed out of its caldera into the sky.’
Into the mouth of a volcano (Astrobiology Magazine) – ‘Dr. Inge Ten Kate, a University of Maryland Baltimore County research assistant, led an expedition into a cinder cone atop Mauna Kea, Hawaii, to test the prototype for an instrument that will be a miniature laboratory to discover the composition of rocks and atmospheres on moons, asteroids, and planets across the solar system. … Why a volcano? “The terrain and composition are similar to what we expect to find on the Moon, asteroids, and Mars,” says Ten Kate. “Also, there will be outgassing from the volcano, so we can test our ability to measure trace gases in atmospheres. Finally, the differences among various areas on the volcano’s cinder cone will be subtle, so it’s a good test of our sensitivity and our ability to distinguish different regions.”‘
Mount St. Helens ‘spiders’ will get tryout on Chilean volcano (The Oregonian) – Geological ‘spiders’ packed with instruments to monitor the heaves, sighs and belches of Mount St. Helens, are expected to migrate south this month. Two of the contraptions are headed to Chaiten, a volcano in Chile that began erupting in 2008 after about 9,000 years of dormancy. … The machines helped give the USGS sufficient information to declare in January 2008 that Mount St. Helens recent eruptive phase was over. That kind of certainty is needed at Chaiten, said John Ewert, a volcanologist in the Volcano Disaster Assistance Program. “It’s always hard enough to know when they’ll start erupting,” said Ewert, part of the team that visited the Chilean volcano in January. “It’s even harder to tell when they’ll stop.”‘