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August 31, 2021 07:35 pm
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/GMxVffymQNY/satellites-spot-oceans-aglow-with-trillions-of-organisms
Satellites Spot Oceans Aglow With Trillions of Organisms
A new generation of detectors let scientists identify a dozen large episodes of bioluminescence, one a hundred times larger than Manhattan -- and that's the smallest. From a report: The ocean has always glowed. The Greeks and Romans knew of luminous sea creatures as well as the more general phenomenon of seawater that can light up in bluish-green colors. Charles Darwin, as he sailed near South America on a dark night aboard the H.M.S. Beagle, encountered luminescent waves. He called it "a wonderful and most beautiful spectacle." As far as the eye could see, he added, "the crest of every wave was bright" -- so much so that the "livid flames" lit the sky. Now, scientists report that ocean bioluminescence can be so intense and massive in scale that satellites orbiting five hundred miles high can see glowing mats of microorganisms as they materialize in the seas. Last month in the journal Scientific Reports, eight investigators told of finding a luminous patch south of Java in 2019 that grew to be larger than the combined areas of Vermont, New Hampshire, Massachusetts, Rhode Island and Connecticut. "It was an epiphany," said Steven D. Miller, lead author on the bioluminescence study and a specialist in satellite observations at Colorado State University. When a hidden wonder of nature comes to light, he added, "it captures your imagination." The scientists said the close examination of images gathered between December 2012 and March 2021 from a pair of satellites let them identify a dozen extremely large events -- approximately one every eight months. Even the smallest was a hundred times larger than Manhattan. The imagery is opening a new window on the world's oceans, scientists say, and promises to aid the tracking and study of the glowing seas, whose origins are poorly understood. Kenneth H. Nealson, a pioneer of bioluminescence research at the University of Southern California, called the discovery "a big step toward being able to understand" how an enduring mystery of the sea "actually comes to be."Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/GMxVffymQNY/satellites-spot-oceans-aglow-with-trillions-of-organisms
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