ANALYSIS OF THE OSAKA-KOBE EARTHQUAKE OF JAPAN──INVERSION OF MAGNETIC ANOMALIES BY EQUIVALENT POINT SOURCE UNDER A CIRCUMSTANCES OF SPHERICAL COORDINATE
Zou Xinmin;Liu Xiaohua (Changchun Univ. of Earth Sci., Changchun 130026)(Institute of Geophysics,The State Bureau of Seismology) Huang Wenbing (The Geological and Mineral Resources Bureau of Jiangxi Province)
In order to know regional structure and analyse the earthquake, the authors have calculated the vertical first derivative of magsat anomalies( △T) of China and nearby region under a circumstances of spherical coordinate, The authors have checked about the result, but it seems difficult to explain the phenomenon and mechanism.It allows us to relate the results with Osaka-Kobe earthquake in Japan in January 17th, 1995. Osaka-Kobe locates on gradient zone of anomalous vertical first derivative.It indicates a boundary of massif or a structure.