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本文系统地研究了大地电磁测深(MT)资料中倾子多数的特征。研究结果表明:倾子异常主要反映了地电构造的水平非均匀性;倾子异常的幅值不仅与水平非均匀界面两边介质电导率的对比度有关.还与上覆层的电导率和厚度以及观测频率有关;利用倾于异常的频率特征.可以定量地解释出垂直断面的上覆层厚度。在倾子资料解释方法上,可采用图象处理中的模板相关匹配技术。以理想模型的响应为样板,对野外实测资料进行匹配.可以较准确地解释出垂直断面的位置和埋深以及电阻车的分布情况等。文中对一条测线的野外实测倾子资料进行了处理和解释,在没有参考任何其它地质信息的情况下,解释结果能很好地反映该测线的地质构造特征,分辨率和可信度均较常规解释方法要高。
In this paper, we systematically studied the characteristics of the majority of plutons in MT data. The results show that: the pheasant anomaly mainly reflects the horizontal heterogeneity of geoelectric structure; the amplitude of pheasant anomaly is not only related to the contrast of dielectric conductivity on both sides of the horizontal non-uniform interface. It is also related to the conductivity and thickness of the overburden as well as to the observed frequency; the use of anomalous frequency characteristics. The thickness of the overburden in the vertical section can be explained quantitatively. In the method of plutonomy data interpretation, the template matching technique in image processing can be used. Taking the response of the ideal model as a model, the field measured data were matched. Can be more accurately explain the vertical cross-section of the location and depth as well as the distribution of resistance cars and so on. In this paper, we measured and measured the field measured data of a surveyed line. Without any reference to any other geological information, the interpretation results can well reflect the geological structure characteristics of the survey line. The resolution and reliability are both Higher than the conventional method of interpretation.