Two Scientists in the US just presented a new seismic theory. Since 2013 there has been an increase in seismic activity, with their information indicating that the Earth’s rotation slowed down that year, and every year since. They predict 2018 will have a dramatic increase in the number of devastating earthquakes global
“Next year we should see a significant increase in numbers of severe earthquakes,” Roger Bilham of the University of Colorado said. “We have had it easy this year. So far we have only had about six severe earthquakes. We could easily have 20 a year starting in 2018.”
The decrease in Earth’s rotation is only a millisecond on some days, measured by atomic clocks.
Since 1900 they looked back at all the quakes greater than magnitude 7 and found there were periods of around five years in length when the larger quake activity increased significantly. Within those five year periods there there were around 25-30 large quakes a year, in comparison to an average of around 15 in other years.
It was just over four years ago when Earth’s rotation began one of the periodic slowdowns, making it around 2013.