Proceedings Article10.3997/2214-4609.20130487
Efficient 3D MT Inversion Using Finite-difference Time-domain Modelling
S. de la Kethulle de Ryhove,Jan Petter Morten,K. Kumar +2 more
- 10 Jun 2013
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TL;DR: In this article, a finite-difference time-domain modeling algorithm was used for efficient 3D inversion of marine magnetotelluric (MT) data, and demonstrated the capability of the inversion on a synthetic salt dome.
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Abstract: We show how a finite-difference time-domain modelling algorithm can be utilised for efficient 3D inversion of marine magnetotelluric (MT) data, and demonstrate the capability of our inversion on a synthetic salt dome. In comparison to frequency-domain modelling methods which are typically applied, two advantages of the finite-difference time-domain modelling method are (1) that it is an explicit, low-memory method; and (2) that it allows forward and adjoint computation for the electromagnetic field unknowns at all frequencies of interest in a single modelling run.
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Citations
Finite-difference time-domain modelling of through-the-Earth radio signal propagation
TL;DR: This research seeks to extend the knowledge of how a very low frequency through-the-Earth (TTE) radio signal behaves as it propagates underground, by calculating and visualizing the strength of the electric and magnetic fields for an arbitrary geology through numeric modelling using the finite-difference time-domain method.
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Modelling and optimizing through-the-Earth radio transmissions
M. Ralchenko
- 01 Jan 2017
TL;DR: A finite-difference time-domain (FDTD) code was developed and optimized for the forward modelling of TTE radio transmissions, and a thin-wire approximation was added to the FDTD code, and conductivity models were fitted to match observed data for propagation along elevator shafts in multistory buildings and along railway tracks.
6
Improvement of Methane Hydrate Detection Using Marine CSEM in the Fictitious Wave Domain
K. Kusuda,Hitoshi Mikada,Tada-nori Goto,Junichi Takekawa +3 more
- 29 Apr 2014
TL;DR: In this article, the authors examined whether the received waveforms in the fictitious wave domain could highlight methane hydrate (MH) responses better than in the diffusive domain, and they showed that the sensitivity to the MH response in the Received Waveform is improved in the FWA domain.
Multi-order vector finite element modeling of 3D magnetotelluric data including complex geometry and anisotropy
TL;DR: MoVFEM as discussed by the authors is a computational algorithm for the modeling of three-dimensional magnetotelluric data using a vector finite element method of specific order from multiple elements' orders.
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