Jamie Johnson Jamie Johnson

Interpretation/Application Publications

Relevant publications by CMTS Directors:

Hydrocarbon Exploration:

  • Avdeeva, A., D. Avdeev, and M. Jegen, 2012. Detecting a salt dome overhang with magnetotellurics: 3D inversion methodology and synthetic model studies. Geophysics77, E251-E263.

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Modelling/Inversion/Joint Inversion Publications

Inversion:

  • Avdeeva, A., M. Commer, and G. A. Newman, 2007. Hydrocarbon reservoir detectability study for marine CSEM methods: Time-domain versus frequency-domain. SEG Expanded Abstracts, SEG, 628–632, doi: 10.1190/1.2792497.

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  • Avdeev, D., and A. Avdeeva, 2009. 3D magnetotelluric inversion using a limited-memory quasi-Newton optimization. Geophysics74, F45–F57, doi: 10.1190/1.3114023.

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  • Avdeeva, A.M. Moorkamp, D. Avdeev, M. Jegen, and M. Miensopust, 2015. Three-dimensional inversion of magnetotelluric impedance tensor data and full distortion matrix. Geophysical Journal International202, 464-481.

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  • Matsuno, T., A.D. Chave, A.G. Jones, M.R. Muller, and R.L. Evans, 2014. Robust magnetotelluric inversion. Geophysical Journal International196, 1365-1374, doi: 10.1093/gji/ggt484.

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Joint Inversion

  • Roux, E., M. Moorkamp, A.G. Jones, M. Bischoff, B. Endrun, S. Lebedev, and T. Meier, 2011. Joint inversion of long-period magnetotelluric data and surface-wave dispersion curves for anisotropic structure: Application to data from Central Germany. Geophysical Research Letters38, L05304, doi: 10.1029/2010GL046358, pp 5.

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  • Moorkamp, M., A.G. Jones, and S. Fishwick, 2010. Joint inversion of receiver functions, surface wave dispersion and magnetotelluric data. Journal of Geophysical Research – Solid Earth115, B04318, doi: 10.1029/2009JB006369.

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  • Moorkamp, M., A.G. Jones and D.W. Eaton, 2007. Joint inversion of teleseismic receiver functions and magnetotelluric data using a genetic algorithm: Are seismic velocities and electrical conductivities compatible? Geophysical Research Letters34, L16311, doi: 10.1029/2007GL030519
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Processing & Analysis Publications

Processing:

  • Chave, A.D., D.J. Thomson, and M.E. Ander, 1987. On the robust estimation of power spectra, coherences, and transfer functions. Journal of Geophysical Research92, 633-648.

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  • Chave, A.D., and D.J. Thomson, 2004. Bounded influence estimation of magnetotelluric response functions. Geophysical Journal International157, 988-1006.

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  • Chave, A.D., 2014. Magnetotelluric data, stable distributions and impropriety: An existential combination. Geophysical Journal International198, 622-636.

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Analysis:

  • Chave, A.D., and J.T. Smith, 1994. On electric and magnetic galvanic distortion tensor decompositions. Journal of Geophysical Research99, 4669-4682.

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  • Chave, A.D., and A.G. Jones, 1997. Electric and magnetic field distortion decomposition of BC87 data. Journal of Geomagnetism and Geoelectricity49, 767-789.

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General Publications

Relevant publications by CMTS Directors:

MT Book:

  • Chave, A.D., and A.G. Jones, 2012. The Magnetotelluric Method: Theory and Practice. Cambridge University Press, ISBN-13: 9780521819275.

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MT Theory:

  • Chave, A.D., and P. Weidelt,  2012. The theoretical basis for electromagnetic induction, In: The Magnetotelluric Method, edited by Alan D. Chave and Alan G. Jones, published by Cambridge University Press, Chapter 2, pp. 19-49, ISBN: 9780521819275.

MT Sources:

  • Lezeata, P., A.D. Chave, A.G. Jones, and R.L. Evans, 2007. Source field effects in the auroral zone: Evidence from the Slave craton (NW Canada). Physics of the Earth and Planetary Interiors164, 21-35, doi: 10.1016/j.pepi.2007.05.002

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  • Jones, A.G. and J. Spratt, 2002. A simple method for deriving the uniform field MT responses in auroral zones. Earth, Planets and Space54, 443-450.
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What is Magnetotellurics?

Magnetotellurics is a natural-source electromagnetic sounding method that determines the electrical resistivity structure both vertically and laterally.

Magnetotellurics is a natural-source electromagnetic sounding method that determines the electrical resistivity structure both vertically and laterally.

Sources are lightning activity at high frequencies (>8 Hz), and solar interactions with the Earth’s magnetosphere at low frequencies (<8 Hz).

Fluctuations in time of the orthogonal horizontal electric and magnetic fields are processed into the frequency domain and MT responses derived. Those responses are analysed for dimensionality, directionality and internal consistency, and are subsequently modelled using 1D, 2D or 3D inversion approaches as appropriate.

The Magnetotelluric Method: A comprehensive textbook, co-edited by two CMTS Directors (Alan Chave & Alan Jones), that covers all aspects of MT is available from Cambridge University Press

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