| 講演要旨(和文) | | 等価磁化源として,観測面を頂面とし外部磁化方向を柱軸とする半無限斜柱群を設定する.まず,磁化方向=柱軸方向として,観測面上の全磁力異常分布をもたらすように,磁化の強さを設定する.次に磁化方向を垂直方向に変える.これにより全磁力→極磁力の変換を実現できる.柱面の磁荷にもとづく磁場計算となるため,双極子分布を等価磁化源とする通常の方法に比べ,処理過程が分かりやすく,変換特性を推測しやすい. |
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| | 講演要旨(英文) | | As an equivalent source, we set a distribution of semi-infinite oblique columns, whose top surfaces are coincident with the observation plane, and whose axes are parallel to the ambient field. First, in the magnetization directions along the column axes, the magnetization intensities are decided to produce the distribution of total magnetic anomaly on the observation plane. Second, the magnetization directions are changed to the vertical, to produce the anomaly reduced to the pole. This method affords good insight into the conversion characteristics, compared with usual methods based on dipole distribution, because magnetic fields are evaluated from charges on column surfaces. |
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