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- W3136756684 abstract "This study presents a fast and efficient vector finite element method, based on the model reduction algorithm, to simulate the 3-D magnetotelluric response. Firstly, we derive a finite element governing equation based on electric field vector from Maxewell's equations Then we express the electric field by a function of frequency parameter to get a transfer function that can be approximated by the Krylov subspace model reduction algorithm. The transfer function after model reduction has far lower dimensions than the original one, and it can be directly solved by the Pardiso solver. Therefore, the computational efficiency is significantly improved. For validation, we compare the proposed algorithm with the 3-D direct finite element method (3DFEM) by a three-layer model, and the results show that the computation time of the former is less than 1/10 of the latter for the same accuracy. We also compare the electromagnetic response obtained by the proposed method with that obtained by two classical models, COMMEMI 3D-2A Model and Dublin Test Model 1. These results agree well, indicating that the proposed method is feasible and efficient for 3-D magnetotelluric forward modeling." @default.
- W3136756684 created "2021-03-29" @default.
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- W3136756684 date "2021-06-01" @default.
- W3136756684 modified "2023-10-18" @default.
- W3136756684 title "Three-dimensional magnetotelluric modeling using the finite element model reduction algorithm" @default.
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- W3136756684 doi "https://doi.org/10.1016/j.cageo.2021.104750" @default.
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