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不规则回线源层状介质瞬变电磁场正反演研究及应用

Study and Application of the TEM Forward and Inversion Problem of Irregular Loop Source over the Layered Medium

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【作者】 李建平李桐林张辉徐凯军

【Author】 LI Jian-ping,LI Tong-lin,ZHANG Hui,XU Kai-jun(College of GeoEexploration Science and Technology,Jilin University,Changchun 130026,China)

【机构】 吉林大学地球探测科学与技术学院吉林大学地球探测科学与技术学院 吉林长春130026吉林长春130026吉林长春130026

【摘要】 不规则回线内任一点的电磁场可以看成是其内部多个圆形回线在该点的电磁场之和,因此,只要求出不规则回线内各个圆形回线在该点的电磁场,将它们叠加就可得出不规则回线在该点的电磁场。此种方法的关键是如何在不规则回线内划分圆形回线。采用的方法是首先在不规则回线内以测点为圆心做一个圆,这时整个回线被分为圆内和圆外两部分;然后再将回线内圆外的部分划成众多的小圆形,此时就将求解不规则回线的电磁场转化为求解圆形回线的电磁场。

【Abstract】 The EM field of arbitrary point in an irregular loop can be considered as the sum of the EM field of many circle loops in the irregular loop at the point.Therefore the authors may obtain the EM field of the irregular loop as long as the authors work out the EM field of each of the circle loops.The key to the success of this method is how the circle loop in the irregular loop is divided.The authors make a circle with the center of the circle located at the measuring point so that the irregular loop is divided into two parts,i.e.inside and outside the circle.Then the authors divide the outside of the circle further into many small circles.By doing so,the authors transform the irregular loop EM field solving problem into the circle loop EM field problem.

【基金】 国土资源部“十五”科技攻关项目(20010212)
  • 【文献出处】 吉林大学学报(地球科学版) ,Journal of Jiling University (Earth Science Edition) , 编辑部邮箱 ,2005年06期
  • 【分类号】P631.325;
  • 【被引频次】22
  • 【下载频次】294
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