![]() ![]() ![]() Both orbital variations and solar luminosity variations likely influence living organisms via different mechanisms. It contains both experimental records of the orbital variations and solar luminosity variations that can be separated by their frequency. The speleothem luminescence proxy is an experimental record representing primarily the solar insolation at the earth's surface. The luminescent speleothem records of solar insolation have been correlated with paleotemperature records (3-5, see also 6). To do so in order to extend the search for reciprocal cycles already found between cave temperature (1) and about 500-year cycles in tree-rings, international battles and the emergence on different continents of famous physicians, poets and historians (2). ![]() To assess the time structure (chronome) of a luminescent solar insolation proxy record measured in a speleothem (JC11) from Jewel Cave, South Dakota, USA. ![]()
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