Seisms on Earth
Earth behind our feet is regularly shaking. Data presented in this page were fetch on 12 January 2015 and obtained from earthquake.usgs.gov/earthquakes/feed/v0.1/
Most seisms are right below the ground surface and many strong seisms come from deep crusts, as the following scatterplot illustrates.
The data we are here using do not shown value below a seism magnitude below 2.5