Looking at these *graphs I don't even need to go back to the 1959 cycle...you can see that the minimum generates the most amount of quakes. The intensity and number of quakes are related to how big the next max is going to be with regard to sunspots/flares. Perhaps even there is a correlation between cosmic ray increase during solar max and increased geological activity. Then of course there is the Growing Earth Theory in which cosmic rays interact with atoms on earth and actually create new atoms...building up the mass of the earth (and other planetary bodies.)
Solar Activity and Earthquakes, page 1 —Solar Activity and Earthquakes…some *graphs of corresponding quakes and solar activity.
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http://www.springerlink.com/content/buvw2tq081013210/ Study: Beijing Astronomical Observatory, Chinese Academy of Science, 100101 Beijing, China
The relations between sunspot numbers and earthquakes (M≧6), solar 10.7 cm radio flux and earthquakes, solar proton events and earthquakes have been analyzed in this paper. It has been found that:
(1) Earthquakes occur frequently around the minimum years of solar activity. Generally, the earthquake activities are relatively less during the peak value years of solar activity, some say, around the period when magnetic polarity in the solar polar regions is reversed.
(2) the earthquake frequency in the minimum period of solar activity is closely related to the maximum annual means of sunspot numbers, the maximum annual means of solar 10.7 cm radio flux and solar proton events of a whole solar cycle, and the relation between earthquake and solar proton events is closer than others.
(3) As judged by above interrelationship, the period from 1995 to 1997 will be the years while earthquake activities are frequent. In the paper, the simple physical discussion has been carried out.
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One of the mechanisms for earthquakes is when the earth's spin speeds up or slows down in relation to changes in the solar wind output.
Solar Activity and Climate “70-90 years oscillations in global mean temperature are correlated with corresponding oscillations in solar activity. Whereas the solar influence is obvious in the data from the last four centuries, signatures of human activity are not yet distinguishable in the observations.” Solar Activity and Climate