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Nov 2, 2012

Haida Gwaii Rumbles Picked Up on ONC's Hydrophone

From Alaska to Vancouver, residents along the west coast felt the powerful magnitude 7.7 earthquake that struck the Haida Gwaii archipelago at 8:04PM PDT, on October 27th, 2012.

ONC seafloor hydrophones also registered the low-frequency rumbles from this earthquake, along with the calls of humpback whales in the area. This recording is from a hydrophone on Barkley Upper Slope, positioned at a depth of 396 m. In this clip, sound has been sped up 250% to make the earthquake noise audible to the human ear. The squeaking noises prior to the main quake are the sped-up whale calls.

With thanks to John Dorocicz, Acoustics Systems Developer, Ocean Networks Canada

earthquake | Haida Gwaii | Hydrophone | humpbacks | Whales

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