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Results of archaeomagnetic observations so far obtained and those of secular variation from the world-wide geomagnetic observatories were put together to see whether or not there exists any movement of the geomagnetic dipole field in historic time during the past 2000 years.The archaeo-secular variation thus summarized can be explained more reasonably if a wobbling movement of the dipole field was assumed to have occurred.

Wobbling Motion of the Geomagnetic Dipole Field in Historic Time During These 2000 Years