The North Atlantic Ocean's lower Scotian Slope off the coast of Nova Scotia, Canada, has major underwater landslides about once every 1,000 years, making the possibility of a tsunami more likely than previously thought, a study says. Scientists say they found evidence of four underwater landslides in the past 4,000 years, including one that occurred about 1,500 years ago and created a deposit three times the size of Canada's Prince Edward Island.
Nova Scotia may be more at risk of tsunamis than thought, study says
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