The Modeling of 2D Controlled Source Audio Magnetotelluric (Csamt) Responses Using Finite Element Method

Imran Hilman Mohammad, Wahyu Srigutomo, Doddy Sutarno, Prihadi Sumintadireja
2012 Journal of Electromagnetic Analysis and Applications  
This paper presents the modeling of 2D CSAMT responses generated by horizontal electric dipole using the separation of primary and secondary field technique. The primary field is calculated using 1D analytical solution for homogeneous earth and it is used to calculate the secondary electric field in the inhomogeneous Helmholtz Equation. Calculation of Helmholtz Equation is carried out using the finite element method. Validation of this modeling is conducted by comparison of numerical results
more » ... umerical results with 1D analytical response for the case of homogeneous and layered earth. The comparison of CSAMT responses are also provided for 2D cases of vertical contact and anomalous conductive body with the 2D magnetotelluric (MT) responses. The results of this study are expected to provide better interpretation of the 2D CSAMT data. Figure 15. The profiling of conductive prism model of CSAMT apparent resistivities of xy and yx configurations, compared to MT-TE responses. Figure 16. Pseudosection's contour of CSAMT responses of conductive prism model for both xy and yx configurations.
doi:10.4236/jemaa.2012.47041 fatcat:4s3mfo3nwneibfbaraxb7a4mfu