Cascadia is what's known as a "megathrust" fault.

2019年12月六级真题（第一套）阅读 Section C

For hundreds of thousands of Cascadia residents, "The Big One" isn’t a question of if, only when.

2019年12月六级真题（第一套）阅读 Section C

If the people of the Cascadia region have anything to do with it, they won't be caught unawares?

2019年12月六级真题（第一套）阅读 Section C

The Cascadia Earthquake Zone is big enough to compete with San Andreas it's been called the most dangerous fault in Americ, but it's much lesser known than its California cousin.

2019年12月六级真题（第一套）阅读 Section C

The Cascadia Rising drill gives area residents and emergency responders a chance to practice what to do in case of a 9.0-magnitude earthquake and tsunami along one of the nation’s dangerous—and underestimated—faults.

2019年12月六级真题（第一套）阅读 Section C

The last time a major earthquake occurred along the Cascadia fault was in 1700, so officials worry that another event could occur any time.

2019年12月六级真题（第一套）阅读 Section C