[国外新闻] 科技:卡斯卡迪亚大地震无可避免-伤亡将数以千计

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发表于 2017-9-17 13:31:56 | 显示全部楼层 |阅读模式
Along the west coast of North America, theCascadia subduction zone stretches more than 1,000 kilometers from VancouverIsland to Cape Mendocino, Calif. It produced a magnitude 9 megathrustearthquake about 300 years ago, one of the biggest quakes in world history.
Scientists know that Cascadia will produceanother earthquake at some point in the future; the question is how soon. Theodds of it happening in the next 50 years are 1 in 3. The Federal EmergencyManagement Agency projects that Cascadia’s next megathrustearthquake will cause thousands of deaths and injuries and leave millions inneed of shelter, food, and water.

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