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基于姿态参数的海洋可控源电磁数据一维反演 被引量:3

1D inversion of marine controlled-source electromagnetic data incorporating attitude parameters
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摘要 基于姿态信息的海洋可控源数据一维反演采用Occam方法进行,反演数据为不同收发距离观测到的电场振幅(MVO)。接收器和发射器姿态参数同时引入到反演中,正演过程引入发射源姿态参数,借助矢量分解将任意姿态的发射源分解为3个正交坐标轴分量源,分别计算接收点处电场响应,叠加得到总电场响应;根据接收器姿态信息,将计算坐标系中的电场矢量进行欧拉旋转获取任意姿态时测量到的电场响应。理论模型与实际数据反演结果表明,基于姿态信息进行海洋可控源勘探数据反演是可行的。 Occam method is applied in the one dimensional inversion of marine controlled-source electromagnetic method( m CSEM) based on attitude parameters. The inversion data are the electric response amplitude measured at different distance( MVO). Attitude parameters of transmitters and receivers are considered simultaneously in the inversion. According to the vector decomposition,the source is decomposed into three coordinate direction sources in the forward process. Meanwhile,the electromagnetic responses are calculated respectively in the same coordinate system,then the total response is got by superposition. The responses at any attitude are calculated by using Euler rotation with receiver' s attitude parameters. The inversion results of theoretical and measured data inversion results indicate that the inversion of m CSEM based on the attitude parameters is available.
出处 《世界地质》 CAS 2016年第1期244-249,共6页 World Geology
基金 国家重大科研仪器专项(2011YQ05006010)资助
关键词 海洋可控源电磁法 MVO曲线 姿态参数 一维反演 m CSEM MVO curve attitude parameters 1D inversion
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