Geomagnetic field intensity in the eastern Mediterranean region in the second half of the 1st millennium BC and the beginning of our era
The magnetization of ceramic material manufactured in the eastern Mediterranean is studied. Data on the variation in geomagnetic field intensity in the time interval from the fourth-quarter of the 6th century BC through the 2nd century AD are obtained. The main tendency of the variation in the field intensity until approximately the middle of this interval is its decrease, after which the average intensity level varied insignificantly over the three next centuries. Variations with characteristic times of a few tens to a few hundreds of years are superimposed on the smooth variation in the field intensity approximated by a sinusoid with a period of 1600 yr. The data obtained in this work confirm the previously derived conclusion that short-term intensity variations have been permanently present in the geomagnetic field in the recent millennia.
Unable to display preview. Download preview PDF.
- 1.K. S. Burakov, I. E. Nachasova, T. Najera, et al., “Geomagnetic Intensity in Spain in the Second Millennium BC Illavarra Geomagnetic Reversal Recorded in a Tatarian Stratotype (the Kazan Region),” Fiz. Zemli, No. 8, 28–40 (2005) [Izvestiya, Phys. Solid Earth 41, 622–633 (2005).Google Scholar
- 2.K. S. Burakov, I. E. Nachasova, and C. Mata, “Geomagnetic Field Intensity in the First Millennium BC from Data on Ceramics of the Los Villares Archaeological Monument (Spain),” Fiz. Zemli, No. 11, 1–6 (2006) [Izvestiya, Phys. Solid Earth 42, 942–950 (2006)].Google Scholar
- 3.S. V. Filippov and N. M. Rotanova, Method of Identification and the Space-Time Structure of 20-yr Variations in the Geomagnetic Field from Data of the World Network of Observatories, Preprint of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Russ. Acad. Sci., Moscow, 1987, no. 3(692).Google Scholar
- 4.I. E. Nachasova, Characteristics of Variations in the Geomagnetic Field Intensity from Archaeomagnetic Data, Doctoral (Phys.-Math.) Dissertation, Moscow, Inst. Physics of the Earth, 1998.Google Scholar
- 5.I. E. Nachasova, K. S. Burakov, and M. V. Kvirikadze, “Geomagnetic Field Intensity in Georgia in the 1st Millennium BC,” Geomagn. Aeron., No. 2, 356–358 (1986).Google Scholar
- 6.I. E. Nachasova and K. S. Burakov, “Intensity of the Geomagnetic Field in Central Asia in 2000 BC-1000 BC,” Fiz. Zemli, No. 7, 33–38 (1997) [Izvestiya, Phys. Solid Earth 33, 543–548 (1997)].Google Scholar
- 7.I. E. Nachasova and K. S. Burakov, “Geomagnetic Field Intensity in 6th Century BC-2nd Century AD,” 42(2), 284–287 (2002).Google Scholar