University of Washington geologists analyzed woody debris buried in earlier slides and used radiocarbon dating to map the history of activity at the site.
John Vidale, professor of Earth and Space Sciences and chief seismologist for the State of Washington, wants people to be aware of the threats.
Earlier this year, an article in the New Yorker stirred up panic nationwide over the looming possibility of megaquake along the Cascadia Fault.
Shelley Chestler, UW seismology graduate student
The July 2015 New Yorker article “The Really Big One,” by Kathryn Schulz, shook up the Pacific Northwest (PNW) more than any earthquake has since the Magnitude-6.8 Nisqually earthquake in 2001. In the article’s most dooming statement, the head of the Cascadia FEMA division was quoted saying, “everything west of I-5 will be toast.” This assertion scared the living daylights out of PNW residents, creating a sense of terror and hopelessness that was the antithesis of what the article meant to do: to spur the region into preparing for this potentially devastating event.