Yet another mystery noise:

ice-sheet

Canadian military probes mysterious Arctic pinging noise.  The BBC reports that the “Canadian military has investigated a mysterious pinging sound coming from the sea floor in a remote region of the Arctic.”  The sound has also been described as a beep or hum.  Whatever the source, the noise is scaring away animals, which is a problem for the indigenous people who live and hunt in the area.  The Canadian press has put forth a number of explanations including the following:

  • It is a sonar survey conducted by a mining company

  • It is being generated on purpose by Greenpeace to scare wildlife away from the rich hunting ground

  • It is caused by military submarines

Deepening the mystery is that mining companies, Greenpeace, and the military have either denied responsibility or have claimed no presence in the area where the noise has been heard.

Given how quickly Arctic ice has been melting, one wonders if the sound could have a wholly natural source like deep ice splintering or calving.  Thoughts?

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