letztheadirewoolb.ml/3325-handy-orten-durch.php Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds. Eerie hum discovered in Antarctica The Ross Ice Shelf in Antarctica is emitting tones reminiscent of a didgeridoo, or the drone of a horror film soundtrack.
The sounds are created when wind whips across the snow dunes, causing the ice to vibrate. Besides being eerie, the discovery of the sounds reveals new insights for the study of glaciers, Colorado State University professor of geophysics Rick Aster said.
Wawa Ph added it Oct 16, The resulting study was published Tuesday in the journal American Geophysical Union. But as she is drawn back into her own world, she must face the things that made her long for escape. Here, the characters' misery is all so pointless and unrelieved that it left me feeling as bleak as the snowbound moor that Marion drives across. Found at a second hand bookshop in London, a First Edition! The sound was measured by a team of scientists who placed seismic sensors under the snow on the Ross Ice Shelf, in order to monitor the structure and movement of the ice.
When humans burn fossil fuels, heat-trapping gases are released into the atmosphere that contribute to the warming of the oceans and the melting of ice. Sea levels are rising because of this warming trend -- both as land-based ice melts and as ocean molecules expand.
Shifts in the ice's vibrational frequencies could reveal the early formation of cracks or melt ponds -- signs of structural instability. Researchers detailed their initial acoustic monitoring effort this week in the journal Geophysical Research Letters.
And its impact on the ice shelf. Photo by Rick Aster.
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The difference in frequencies, or what Chaput describes as singing, happens as the surface of the snow dunes changes. This seismological monitoring can be used to observe the ice shelves from remote locations, according to the study. The newly published seismological method is not the only way to monitor glaciers, according to glaciologist and University of Chicago professor Douglas MacAyeal, who was not part of the study.
Other methods include the use of satellites and large thermometers known as autonomous instruments. It allows glaciologists to see immediate differences in ice shelves at night versus during the day, as well as differences across seasons, he added.