The epicenter of what’s now believed to be a ‘frost quake’, has been located in northwest Calgary. A group of researchers was able to pinpoint the location with help from an amateur seismologist who recorded the quake’s seismic signature on his home-built basement machine. On Saturday, a group led by Dr David Eaton, descended on Captain Nichola Goddard School in Panorama Hills, scouring the frozen ground for signs of prior movement. It didn’t take long before they found a jagged tear in the earth several meters long, at least 50 cm deep and possibly up to a meter deep. The hunt for physical evidence of the suspected frost quake came after dozens of reports to 9-1-1 and to the CTV Calgary newsroom about a loud “boom” heard and felt across northwest Calgary last Tuesday. Some witnesses said it felt like a small earthquake, others described it as an explosion. A University of Calgary seismic monitoring station, which could have shed light on the mysterious sound, was offline at the time of the boom. That’s when attention turned to Jeff Zambory, who reached out to CTV to say his basement seismograph captured the data the University’s instruments did not. He was put in touch with Dr Eaton, who used Zambory’s data to zero in on the possible location. MORE
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