Variations in Magnetic Intensity and Climatic Changes
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TL;DR
The correlation between variations of the magnetic intensity and evidence of climatic change from deep-sea sediment cores back to 1.2 m.y. has been extended to conclude that in the past 470,000 yr the magnetism of the Earth has modulated climate.
Abstract
CORRELATION between the variations of the Earth's magnetic field, fluctuations in atmospheric radiocarbon activity, and climatic changes during the past 7,000 yr has been discussed extensively in the past1–7. In addition, Harrison8 has suggested that reversals of the Earth's magnetic field could cause climatic changes. With an associate we have recently9 been able tentatively to conclude on the basis of studies of deep-sea sediment cores that in the past 470,000 yr the magnetism of the Earth has modulated climate. We have now extended the correlation between variations of the magnetic intensity and evidence of climatic change from deep-sea sediment cores back to 1.2 m.y.