附加列插值法在起伏地形条件下二维大地电磁正演中的研究与应用  

Research and Application of Improved Interpolation Method in MT 2-D Forward Computation with Terrain

作　　者：吴頔 辛慧翠 卜传新 WU Di;XIN Hui-cui;PU Chuan-xin(Hunan Non-ferrous Metals Geology Investingation Bureau Rows247,Changsha 410129,Hunan,China;Department of Computer and Information Engineering,Chengde Petroleum College,Chengde 067000,Hebei,China)

机构地区：[1]湖南省有色地质勘查局二四七队,湖南长沙410129 [2]承德石油高等专科学校计算机与信息工程系,河北承德067000

出　　处：《承德石油高等专科学校学报》2019年第6期31-36,共6页Journal of Chengde Petroleum College

摘　　要：基于双二次插值的有限单元法进行大地电磁二维正演数值模拟研究,在传统的以整个模型为对象进行插值计算的基础上,提出了附加列计算法并设计起伏地形模型进行正演计算,分别计算了TE模式和TM模式下的电阻率,计算结果表明,该插值方法计算精度高,抗干扰能力强,尤其在TM模式下能很好地模拟起伏地形对视电阻率的影响。This paper researches 2-D forward computation using biquadratic interpolation polynomial finite element method,and puts forward a new method of calculation based on traditional method.It calculates the resistivity of TE mode and TM mode respectively.The calculation results show that the new method has better precision and anti-interference ability,especially in TM mode.It can simulate the change of resistivity with terrain.

关 键 词：地形 大地电磁 二维正演 

分 类 号：P631.325[天文地球—地质矿产勘探]