Earth’s total seismic activity seems to be quite consistent.

I was intrigued by stories of multiple large earthquakes, around the Pacific Rim, plus the report of a new tectonic fracture, off India / Australasia.

I googled up the recorded details of the last decade

large quakes

As the scale is logarithmic, I multiplied number of quakes at a value rang, by  ten to the power of the mid-value of that range, to get a rough value for the energy released (arbitrary units).

When graphed, it seems, to me, to show that, ignoring the really large quakes, the seismic energy seems to be fairly constant.

To an extent, this is quite reassuring, as it indicates that apart from the odd big quakes, such as 2007, the Earth, as a whole, is quite stable.


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