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利用局部波数确定磁源体的深度及类型是一种非常有效且实用的方法.本文基于水平方向波数k_x和垂向波数k_x的理论公式,推导出2种求取场源参数的方法.这2种方法均是要首先确定波数k_s的极大值点及其对应的水平坐标,然后利用k_s异常及向上延拓不同高度的k_s异常与该极大值作相应的计算反演场源深度及构造指数.模型试验证明了本文方法可以准确的计算出地质体的埋深及构造指数,与理论值偏差较小,在理论模型异常上加入一定幅值的干扰噪声,依然可以得到较为准确的反演结果.将其应用于一段实测岩脉数据,其结果与实际资料吻合.
It is a very effective and practical method to determine the depth and type of magnetic source body by using the local wave number.This paper deduces two methods to calculate the field source parameters based on the theoretical formulas of horizontal wave number k_x and vertical wave number k_x In this method, we first determine the maximum point of wave number k_s and its corresponding horizontal coordinate. Then, using k_s anomaly and upward extension of k_s anomalies of different heights, The model test proves that the proposed method can accurately calculate the buried depth and tectonic index of the geological body and has a small deviation from the theoretical value, and it is still possible to obtain a more accurate inversion by adding a certain amplitude of interference noise to the theoretical model anomaly The results are applied to a section of measured dikes data, the result is consistent with the actual data.