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作为巴西厄波迪流域水文地质研究工作的一个组成部分,作了112个对称四极装置垂向电测深点。大部分资料已采用带有快速数字滤波正演算法的自动波峰回归反演算法作了解释。结果,反演费用非常低廉。由于正问题求解速度和精度的提高,还允许根据电位差(代替电场)计算对称四极装置视电阻率。因此,无论是在采用很大测量电极距(MN)的地区,还是在电阻率差异比较显著的成层大地上因改变MN极距而造成曲线不连续的地区,解释资料都没有困难。
As an integral part of the hydrogeological research in the Ebodi Valley in Brazil, 112 vertical electrical sounding points for symmetrical quadrupole devices were made. Most of the information has been explained using an automatic peak regression inversion algorithm with a fast digital filter forward algorithm. As a result, inversion costs are very low. Due to the speed and accuracy of the positive problem solving, it is also allowable to calculate the apparent resistivity of a symmetrical quadrupole device based on a potential difference (instead of an electric field). Therefore, there is no difficulty in explaining the data, whether in the area of very large measuring electrode distance (MN) or in the area of curve discontinuity caused by changing the MN pole distance on the stratigraphic land where the resistivity differs significantly.