Archeomagnetic and paleomagnetic dating
A previous inverse field model for the Matuyama/Brunhes geomagnetic reversal approached these problems by 1) limiting the input data to few high-quality records, 2) testing the inversion scheme using artificial data sets from geodynamo models, and 3) verifying the resulting model against independent data sets, not used for the inversion, 4) calculating many different inversions, based on modified data sets, to obtain a bootstrap statistics.Here, we propose several new methods to adopt these strategies to other data sources.To answer some of the questions just raised, we need measurements of the geomagnetic field.The geomagnetic field changes on frequencies of 10s of microseconds (radio waves) to millions and perhaps billions of years.Only few of these early data sets include also inclination.
Archaeomagnetic dating offers a valuable chronological tool for archaeological investigations, particularly for dating fired material.
Many archaeological features contain magnetic minerals that will record the direction and strength of the Earths magnetic field under certain conditions. The direction and strength of the Earths magnetic field changes through time, with significant changes occurring on the order of centuries.
It interacts with the atmosphere, the biosphere, the deep mantle and even the inner core.
To this end the surface field is conveniently described by a sufficiently smooth temporal evolution of its spherical harmonic coefficients.
Historical data of the magnetic field before the time of Gauss and Humboldt are mainly declination measurements.
Search for archeomagnetic and paleomagnetic dating:
The Hittite kingdom was commonly called the Land of Hatti by the Hittites themselves, but the fullest expression is "The Land of the City of Hattusa".