ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] For this purpose the Wolf relative number R is usually considered as an index of solar activity, and the absorption of the D layer during the processes of ionospheric reflexion as an index of the ionospheric effect2,3. In our work, two different parameters have been used instead: the level of the ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/199363a0
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