基于反距离加权和克里格插值的S-A多重分形滤波对比研究

本文以铜陵矿集区土壤Cu元素含量数据为例,对比研究反距离加权插值法和克里格插值法对S-A多重分形滤波的影响。与单纯的反距离加权插值和克里格插值结果相比,无论是基于反距离加权插值还是克里格插值,多重分形滤波(S-A)方法分解得到的铜陵矿集区Cu元素异常场对已知Cu矿田的指示均更加准确。基于克里格插值结果的异常场相比于基于反距离加权插值结果的异常场,具有更好的异常识别效果,与铜陵矿集区已知Cu矿床分布的空间相关性更加显著,具有矿田尺度的成矿预测价值。

Contrastive study of S-A multifractal filtering method based on inverse distance weighted and Kriging interpolation

This paper took Cu element of Tongling Ore Cluster area as an example,studied on the effect of inverse distance weighted interpolation method and Kriging interpolation method on the multifractal filtering method.The research showed that,compared with raw inverse distance weighted interpolation method and Kriging interpolation method,whether based on inverse distance weighted interpolation method and Kriging interpolation method,the Cu element anomaly field which is decomposed by multifractal filtering(S-A) method could indicate the Cu ore field more accurately.The anomaly field based on the Kriging interpolation result achieved better results than that base on the inverse distance weighted interpolation result,the former was more significantly correlated with the distribution of Cu deposits,which is decomposed by multifractal filtering(S-A) method would have the application value for metallogenic prediction at deposit scale.