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Edmond - It's the question being asked across the state. Why are so many earthquakes rocking Oklahoma? Four hit Edmond Monday.
The answer may come from California.
A group of geophysicists are studying what they're calling "induced earthquakes," or quakes caused by human activity. The number of earthquakes to hit parts of Oklahoma have skyrocketed since 2009.
"It was a little unnerving," said North Edmond resident, Ken Janz.
The number of earthquakes felt over the last few years in Oklahoma have without a doubt been unusual. But, for Edmond resident Ken Janz and his family, it's almost becoming the norm.
The latest earthquake was a 3.3 magnitude around 3:15 Monday afternoon outside Edmond.
"It didn't sound like the last earthquake I was in, it was more just a loud boom, house shook momentarily," said Janz. "I thought maybe a tree or something had fallen over and hit the house."
"We've been aware of earthquakes caused by human activity for many, many, years," said California Research Geophysicist, Justin Rubinstein.
