ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] The intensity of the Earth's magnetic field varies with time; for example, during the period from âáá¤23,000 to âáá¤15,000 yr bp (before present) its average value may have been âáá¤50% lower than during the past 10,000 yr ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/357576a0
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