A Seismic Summary of 2017

Global earthquake occurrence 1950-2017

Bar charts showing yearly totals of earthquakes in different magnitude ranges since the mid-20th century. Lines show a smoothed, 6-year moving window average.

2017 earthquake frequency compared to the instrumental record since 1950 (note that M5-6 events are largely missing from the catalogue prior to the 1970s).

Bar charts showing yearly totals of earthquakes in different magnitude ranges since the mid-20th century. Lines show a smoothed, 6-year moving window average.

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