Submission + - Seafloor sensors record possible eruption of underwater volcano (washington.edu)
vinces99 writes: If a volcano erupts at the bottom of the sea, does anyone see it? If it is Axial Seamount, about 300 miles offshore and 1 mile deep, the answer is "yes." Thanks to high-tech instruments installed last summer by the University of Washington to bring the deep sea online, what appears to be an eruption of Axial Volcano on April 23 was observed in real time by scientists on shore.
“It was an astonishing experience to see the changes taking place 300 miles away with no one anywhere nearby, and the data flowed back to land at the speed of light through the fiber-optic cable ... in milliseconds,” said John Delaney, a UW professor of oceanography who led the installation of the instruments as part of a larger effort sponsored by the National Science Foundation.
Delaney organized a workshop on campus in mid-April at which marine scientists discussed how this high-tech observatory would support their science. Then, just before midnight on April 23 until about noon the next day, the seismic activity went off the charts. The gradually increasing rumblings of the mountain were documented over recent weeks by William Wilcock, a UW marine geophysicist who studies such systems. During last week’s event, the earthquakes increased from hundreds per day to thousands, and the center of the volcanic crater dropped by about 6 feet in 12 hours.
“The only way that could have happened was to have the magma move from beneath the caldera to some other location,” Delaney said.
“It was an astonishing experience to see the changes taking place 300 miles away with no one anywhere nearby, and the data flowed back to land at the speed of light through the fiber-optic cable
Delaney organized a workshop on campus in mid-April at which marine scientists discussed how this high-tech observatory would support their science. Then, just before midnight on April 23 until about noon the next day, the seismic activity went off the charts. The gradually increasing rumblings of the mountain were documented over recent weeks by William Wilcock, a UW marine geophysicist who studies such systems. During last week’s event, the earthquakes increased from hundreds per day to thousands, and the center of the volcanic crater dropped by about 6 feet in 12 hours.
“The only way that could have happened was to have the magma move from beneath the caldera to some other location,” Delaney said.