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Talk:Counterexamples to an Old Earth (view source)
Revision as of 05:07, May 2, 2012
, 05:07, May 2, 2012no edit summary
::::Yes, but the cited reference contradicts its own cited reference, which is the USGS earthquake data (found in the NOAA database.) There has been a substantial increase per decade since 1980, a MINOR increase per decade since 1970 and no increase whatsoever since 1900. The 1970s had exceptionally low earthquake activity and the increase since then is a statistical phenomena known as regression to the mean; it's the same numbers trick that makes it appear that speed cameras placed at accident blackspots reduce accidents. Anyone can cherry-pick figures to prove anything, but the long-term increase simply isn't there. There were more severe earthquakes between 1900 and 1910 than between 2000 and 2010. --[[User:MandyC|MandyC]] 20:13, 23 October 2011 (EDT)
::::Yes, but the cited reference contradicts its own cited reference, which is the USGS earthquake data (found in the NOAA database.) There has been a substantial increase per decade since 1980, a MINOR increase per decade since 1970 and no increase whatsoever since 1900. The 1970s had exceptionally low earthquake activity and the increase since then is a statistical phenomena known as regression to the mean; it's the same numbers trick that makes it appear that speed cameras placed at accident blackspots reduce accidents. Anyone can cherry-pick figures to prove anything, but the long-term increase simply isn't there. There were more severe earthquakes between 1900 and 1910 than between 2000 and 2010. --[[User:MandyC|MandyC]] 20:13, 23 October 2011 (EDT)
:::::However you decide to constrain the categorical cutoffs for statistical analysis, they are quite irrelevant to the discussion on the age of the Earth. One need only investigate the actual cause behind any earthquake (crustal strain accumulation) to realize that earthquake frequency in the 20th century is meaningless to this debate. You cannot extrapolate this trend into history, because 1) there is no statistically significant trend in the first place, and 2) there is no '''physical''' basis for doing so. Point number 2 is most pertinent. --[[User:RainyD|RainyD]] 01:07, 2 May 2012 (EDT)
Today the study ''[http://www.pnas.org/content/early/2011/12/12/1118525109.abstract Global risk of big earthquakes has not recently increased]'' was published: the authors show that the earthquakes of the last hundred years fit well into the model of a homogeneous Poisson process, i.e., there is no increase of the number of big quakes. ''Together these facts suggest that the global risk of large earthquakes is no higher today than it has been in the past. '' [[User:AugustO|AugustO]] 17:50, 20 December 2011 (EST)
Today the study ''[http://www.pnas.org/content/early/2011/12/12/1118525109.abstract Global risk of big earthquakes has not recently increased]'' was published: the authors show that the earthquakes of the last hundred years fit well into the model of a homogeneous Poisson process, i.e., there is no increase of the number of big quakes. ''Together these facts suggest that the global risk of large earthquakes is no higher today than it has been in the past. '' [[User:AugustO|AugustO]] 17:50, 20 December 2011 (EST)