
A silent menace looms off America's Pacific coast, with a 15 per cent chance of a catastrophic mega-tsunami striking within five decades.
A new study by Virginia Tech geoscientists, led by Tina Dura, warns that a mega-tsunami, potentially up to 1,000 feet tall, could be unleashed if a magnitude 8.0 or greater earthquake ruptures the Cascadia Subduction Zone within the next 50 years.