RESEARCH OF SHORT-PERIODICAL VARIATIONS OF INTENSITY OF THE GEOMAGNETIC FIELD IN SECOND HALF OF FIRST MILLENNIUM BC

Abstract. As a result of research of residual magnetisation of narrowly dating ceramics (amphoras with the seals) by the modified Thellier’s method were obtained the data about intensity of a geomagnetic field in East Mediterranean during V-III centuries BC. It was constructed averaged 11-annual curve for V-IV centuries BC that has allowed to find out "centenary " variation of intensity of a field on this time interval. For research “short-periodical ” (with the periods in some tens – first hundreds years) variations of intensity of a geomagnetic field it is necessary to have detailed numbers data in hundreds years. Such data authors managed to receive only for of some areas of East hemisphere (from Spain up to Central Asia) for separate time intervals of last eight millennia [Burakov, et al. 2005; Nachasova, 1972; Nachasova, Burakov, 1994; 1995; 1998; Nachasova, et al., 2007]. In all cases in change of intensity of an ancient geomagnetic field have been found out “short-periodical ” variations. They have been allocated in change of intensity of a field in VI–V, II millennia BC. and last two millennia. Research of variation of intensity of a geomagnetic field in I thousand BC, lead on magnetization of a ceramic material from archeological monuments of Black Sea Coast (Crimea and Taman peninsulas) [Nachasova, Burakov, 2002; Nachasova, et al., 2007], has shown, that “short-periodical ” variations ar