摘要
以有限元法为基础,通过建立复杂的背斜模型、逆断层模型,比较了双线性插值和双二次插值方法对于复杂构造条件下的二维大地电磁正演模拟效果。结果显示,对于构造平缓的模型,2种插值方法均能较好地反映出模型的形态;对于构造起伏较大的模型,双二次插值法的效果要明显优于双线性插值法。
In this paper,we established a complex anticline model and a thrust model to compare them with the bilinear interpolation and quadratic interpolation method for complex structure under the condition of two-dimensionalmagnetotelluric forward modeling results based on the finite element method.The results indicated that the bilinear interpolation method and dual quadratic interpolation method can well reflect the shape of the model with relatively flat structure.While for the model with large fluctuation structure,double quadratic interpolation is a suitable method.
作者
陈连木
高龙飞
吴萍萍
CHEN Lian-mu;GAO Long-fei;WU Ping-ping(College of Geophysics and Petroleum Resources,Yangtze University,Wuhan 430100,China;Guyuan Seismic Station,Ningxia Earthquake Agency,Guyuan 756099,China;Institute of Disaster Prevention,Hebei Sanhe 065201,China)
出处
《华北地震科学》
2018年第3期12-19,共8页
North China Earthquake Sciences
基金
国家自然科学资金青年科学资金项目(41704055)
国家自然科学基金项目(41774082)
关键词
复杂构造
大地电磁测深
有限元
插值方法
正演
complex structural models
magnetotelluric sounding
finite element method
interpolation method
forward modeling
