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How earthquake scientists solved the mystery of the last Big One in the Pacific Northwest
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Frontiers | A New Inclusive Volcanic Risk Ranking, Part 1: Methodology
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CBC Victoria’s Gregor Craigie, host of
On the Island, has long been fascinated with the impending “Big One” due for western North America. During his career, he’s interviewed everyone to do with earthquakes: seismologists, engineers, geophysicists, survivors, emergency planners and more. His new book
On Borrowed Time, out in late September, revisits the quakes that came and the quakes to come.
One threat that Craigie exposes? Our own unpreparedness.
Take B.C.’s legislature building. Engineers have deemed it especially vulnerable in a major quake, its giant dome and stone walls at risk of collapse. “[T]he only politicians who ever talked publicly about fixing the building were the ones I asked directly,” writes Craigie. “And all of them, no matter their political affiliation, seemed to speak from the same script: it would not be acceptable, they repeated, to fix this building when so many schools and other public structures remain vulnerable.”
Soil and Groundwater Contamination: An Old and New Issue Needs To Be Solved
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Mar 8, 2021
The blue arrows on the map splay out like uncooked spaghetti tossed into a pot as geophysicist Jonathan Bedford presses play.
Ten years after the March 11, 2011, Great East Japan Earthquake which upended long-held views about where megaquakes were likely to strike scientists like Bedford, a researcher with the GFZ German Research Center for Geosciences in Potsdam, are developing new tools to better understand the threat, while others are digging deep into the past in a search for geological clues.
Each arrow on Bedford’s animated analysis represents tiny movements over time most at a speed of well under 1 millimeter per day of the Japanese archipelago, as detected by the thousands of highly accurate GPS stations that dot one of the world’s most seismically active countries. Red circles spring up now and then to mark an earthquake.