将航磁异常从飞行高度向下延拓至地形线

DOWNWARD CONTINUATION OF AEROMAGNETIC ANOMALY FROM FLYING ALTITUDE TO TERRAIN

采用等效源法和边界单元法相结合的方法 ,将航磁异常从飞行高度向下延拓至地形线 ,以增加磁异常的强度 ,减少漏掉磁异常的机率 .模型检验表明 。

Combining the equivalent source and the boundary element method,we downward continue the aeromagnetic anomaly from the flying altitude to the terrain,in order to increase the amplitude of magnetic anomaly and to decrease the probability of missing magnetic anomaly.The model test shows that the result from this algorithm accords well with the analytic solution.A practical example is given.