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Return To Earthquakes Storyboard South America not much text in this sample page Outline
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South America Quakes
2+ Daily With Wobble 1991-2007 South America Tectonic Zone: ...
This plot was taken down to all quakes of Class 2+. A careful examination of the frequency of seismic events in Class 2 and over since 1991 will suggest to any observer that there is little to NO report inflation in this series. The rise and fall of quake frequency, REPEATEDLY, in all magnitude classes since the early 1990's, as can be plainly seen on this continents and most others (see other sections of the Earthchanges Gallery), suggests that the counts have been made consistently by the creators of the ANSS Composite Catalog at UC Berkeley for all quakes of Class 2 and above for at least since 1991 and in many cases since the early 1970's. Accordingly, these charts from January 1991 to approximately the end of May 2007, gives us an objective vision about the tectonic activity of South America, encompassing the zone . Many geophysicists will tell you that there is no apparent trend of increase in earthquake activity. Look at this data series. What do YOU think? |
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notes: 3. The Wobble X and Y Axis plots are offset vertically by intent to ease the eye and give the mind an easier time at grasping the phasing connections with quakes. One is not bigger than the other and in fact, literal "size" exactness on the vertical is not important. All the importance is on the horizontal scale and the connection with the up or down phases of the waveforms. |
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Copyright 2007, MWM, all rights reserved
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