Science
Related: About this forumScientists are about to test a devastating hypothesis: 2018 will suffer a lot of big earthquakes
Every so often, the Earths rotation slows by a few milliseconds per day. This is inconsequential to the average human, and causes only mild annoyance to the people whose job it is to measure Earths rotation with great precision.
That may be about to change, if the hypothesis set out by two geologists proves true. In a study published in Geophysical Research Letters earlier this year, Roger Bilham of the University of Colorado and Rebecca Bendick of the University of Montana predict that, because of Earths slowing rotation, the world will see a significant spike in large earthquakes in 2018.
To make this prediction, Bilham and Bendick studied every earthquake since 1900 that recorded more than 7.0 on the moment magnitude scale. They found that approximately every 32 years, there is an uptick in these large quakes. The only factor that strongly correlates is a slight slowing of the Earths rotation in a five-year period before the uptick.
Of course that seems sort of crazy, Bendick told Science. But think through it a little and it might not seem so outlandish. The Earths rotation is known to go through regular decades-long periods in which it slows down and speeds up. Even seasonal changes, like a strong El Niño, can affect the planets rotation.
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https://qz.com/1133304/as-earths-rotation-slows-2018-could-see-a-spike-in-large-earthquakes/
msongs
(67,504 posts)We can all run in the same direction at the same time.
Stomping of feet in unison.
We always joked about that when we were kids.
msongs
(67,504 posts)BigmanPigman
(51,674 posts)I have lived through many and always feel them right away. My dog, on the other hand, needs ME to wake HER up. They just built a fenced in condo on the empty lot that is free of wires overhead so now my "safe spot" will be standing in the middle of of the street that doesn't have tall buildings around it. I live in San Diego and we have drills in our schools all the time. Once there was one right after the kids had left for the day...thank goodness.