from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Produced by cosmic rays.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. produced by cosmic rays
- adj. cosmogenetic
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. pertaining to the branch of astronomy dealing with the origin and history and structure and dynamics of the universe
By refining the analysis of a method called cosmogenic dating, Schaefer and his colleagues were able for the first time to assign precise ages to young Holocene moraines.
Bierman and Reusser have been able to measure the amount of this "cosmogenic" beryllium stuck to the outside of grains of sand -- and uncover a kind of secret map to eroding landscapes.
Apparently cosmogenic dating is nothing like internet dating.
Whilst Smolin's scenario produces a tree-like structure to the population of evolving universes, what we might dub horizontal cosmogenic transfer (HCT) produces more of a web-like structure.
I refer to this process as cosmogenic drift, by analogy with the process of genetic drift in evolutionary biology.
Random diffusion is a type of stochastic process, so if the theory of cosmogenic drift is to be developed, and if observable predictions are to be derived from it, then it will be necessary to employ the mathematics of stochastic processes.
This means that not many of the cosmogenic nuclids actually hit the ground - those that hit the ground are called in-situ and until recently the 80's these could not be measured!
Regardless of these uncertainties,the cosmogenic radionuclide records indicate that the current solar activity is relatively high compared to the period before 1950AD.
“Long-term solar activity reconstructions: direct test by cosmogenic 44Ti in meteorites”
Comparison between directly measured sunspot number SN and SN reconstructed from different cosmogenic isotopes.
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