I heard someone say on the radio recently that there are a million earthquakes a year on the planet. Checked wikipedia and they say 500,000.
Also in wikipedia... "The number of seismic stations has increased from about 350 in 1931 to many thousands today. As a result, many more earthquakes are reported than in the past, but this is because of the vast improvement in instrumentation, rather than an increase in the number of earthquakes. The USGS estimates that, since 1900, there have been an average of 18 major earthquakes (magnitude 7.0-7.9) and one great earthquake (magnitude 8.0 or greater) per year, and that this average has been relatively stable.[21] In recent years, the number of major earthquakes per year has decreased, though this probably a statistical fluctuation rather than a systematic trend." - Bill Jim Devine wrote: > Thanks to JMP for providing a serious answer. As others pointed out, the > problems > created by earthquakes and tsunamis (which like have _not_ been getting worse > except perhaps at the edges) have gotten worse due to crowding of populations > and > _seem_ to have gotten worse due to media coverage. _______________________________________________ pen-l mailing list [email protected] https://lists.csuchico.edu/mailman/listinfo/pen-l
