応答関数法による地磁気·重力異常の総合的解析法の開発とその応用結果

抄録

This paper presents a new method to analize magnetic and gravity anomalies in a comprehensive manner using a response function between magnetic and gravity anomaly. The response function of a linear system, whose input is magnetic anomaly and output is gravity anomaly, is newly defined by a Fourier transform of the gravity anomaly divided by that of magnetic anomaly. Response function of two-dimensional magnetic and gravity anomalies contains two informations concerning with a source body. The phase factor (δ) of the response function can be related with effective inclinations of magnetic field and magnetization vector as, δ=I_o'+I_r'-π, where I_o' is an effective inclination of magnetic field and I_r' is an effective inclination of magnetization vector. Besides, the amplitude term of response function gives the density/magnetic moment ratio of the source body. This method was applied to the profiles of aero-magnetic and Bouguer gravity anomaly of Tohoku Japan.
A basic formula of three-dimensional response function is also indicated in this paper.