Haida Gwaii Earthquake Documented (4:24) seafloor hydrophones picked up the low-frequency rumbles from a powerful magnitude 7.7 earthquake struck central Moresby Island in the Haida Gwaii archipelago at 8:04PM PDT, 27 October 2012. The sound of the earthquake, along with the calls of humpback whales in the area can be heard. Source: Neptune Canada and YouTube.
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