In a post just over a year ago, I presented data on earth activity (in particular earthquakes, volcanic eruptions, and tropical storms). Given all the buzz on the internet about an increased earth activity over the past several years, I was curious to see this for myself, so I downloaded and analyzed some publicly available data. Surprisingly, though, the data showed no such increase at all. In the current post, I present the updated data for up until the end of 2016, which still shows no sign of any unusual behavior. Judge the plots below for yourself…
To start again with earthquakes, monthly (Fig. 1) and yearly (Fig. 2) data as calculated from the USGS database is shown below. The main conclusions in the previous post do not change in any way.
Next up, the number of volcanic eruptions (Fig. 3) as reported by the Smithsonian Institution. Again, the main conclusions in the previous post hold up. The trend (blue line) is statistically not significant.
And finally, the number of tropical storms (Fig. 4) as reported by the National Hurricane Center. Again, no change in the conclusions from the previous post. In fact, the strongest storm on record (in 2015) does indeed seem to be a freak accident, and not the start of a trend (at least not yet). The trend in number of storms (blue line) does not show a statistically significant increase (in fact, far from it).
So, as last year, the main conclusion is that the data (which is publicly available to everyone) does not show any significant increasing trend. Make sure to read the previous post for a more detailed (statistical) analysis and explanation of the data. Here, I simply provide updated plots for up to the end of 2016.