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Data Series 901


Southerly view into the crater of Mount St. Helens

Mount St. Helens: Controlled-Source Audio-Frequency Magnetotelluric (CSAMT) Data and Inversions


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Cover
Introduction
Data Acquisition
GPS Data
EDI Data
Data Processing
Occam Inversions
Fischer Inversions
Marquardt Inversions
References
Index page

References

Constable, S.C., Parker, R.L., and Constable, C.G., 1987, Occam’s inversion: a practical algorithm for generating smooth models from electromagnetic sounding data: Geophysics, v. 52, no. 3, p. 289–300.

Fischer, G., Schnegg, P.A., Peguiron, M., and LeQuang, B.V., 1981, An analytic one-dimensional magnetotelluric inversion scheme: Geophysical Journal of the Royal Astronomical Society, v. 67, no. 2, p. 257–278.

Geometrics, Inc., 2007, Operation manual for Stratagem [26716–01 rev. F] systems running Imagem ver. 2.19: Geometrics, Inc., 41 p., accessed July 17, 2103, at ftp://geom.geometrics.com/pub/GeoElectric/Manuals/EH4_manual_F.pdf.

Giampiccolo, E., Musumeci, C., Malone, S.D., Gresta, S., and Privitera, E., 1999, Seismicity and stress-tensor inversion in the central Washington Cascade Mountains: Bulletin of the Seismological Society of America, v. 89, no. 3, p. 811–821.

Jones, A.G., and Dumas, I., 1993, Electromagnetic images of a volcanic zone: Physics of the Earth and Planetary Interiors, v. 81, nos. 1–4, p. 289–314.

Kantor, Michael, and Burrows, J.H., 1996, Announcing the standard for electronic data interchange (EDI): National Institute of Standards and Technology, accessed October 11, 2012, at http://www.limswiki.org/index.php/Electronic_data_interchange.

Keller, G.V., 1989, Electrical properties, in Carmichael, R.S., ed., Practical Handbook of Physical Properties of Rocks and Minerals: Boca Raton, Fla., CRC Press, p. 359–427.

Marquardt, Donald, 1963, An algorithm for least-squares estimation of nonlinear parameters: SIAM Journal on Applied Mathematics, v. 11, no. 2, p. 431–441.

Palacky, G.J., 1989, Resistivity characteristics of geologic targets, in Nabighian, M.N., ed., Electromagnetic Methods in Applied Geophysics Theory: Tulsa, Okla., Society of Exploration Geophysics, v. 1, p. 53–129.

Parker, R.L., 2010, Can a 2-D MT frequency response always be interpreted as a 1-D response?: Geophysical Journal International, v. 181, no. 1, p. 269–274.

Parker, R.L., and Booker, J.R., 1996, Optimal one-dimensional inversion and bounding of magnetotelluric apparent resistivity and phase measurements: Physics of the Earth and Planetary Interiors, v. 98, nos. 3-4, p. 269–282, doi: 10.1016/S0031-9201(96)03191-3.

Pedersen, L.B., and Gharibi, M., 2000, Automatic 1-D inversion of magnetotelluric data—finding the simplest possible model that fits the data: Geophysics, v. 65, no. 3, p. 773–782.

Pujol, Jose, 2007, The solution of nonlinear inverse problems and the Levenberg-Marquardt method: Geophysics, v. 72, no. 4, p. W1–W16.

Reid, M.E., 2004, Massive collapse of volcano edifices triggered by hydrothermal pressurization: Geology, v. 32, no. 5, p. 373–376.

Reid, M.E., Keith, T.E.C., Kayen, R.E., Iverson, N.R., Iverson, R.M., and Brien, D.L., 2010, Volcano collapse promoted by progressive strength reduction—new data from Mount St. Helens: Bulletin of Volcanology, v. 72, no. 6, p. 761–766.

Reid, M.E., Sisson, T.W., and Brien, D.L., 2001, Volcano collapse promoted by hydrothermal alteration and edifice shape, Mount Rainier, Washington: Geology, v. 29, no. 9, p. 779–782.

Schmincke, H.-U., 1998, Volcanism: Berlin, Springer-Verlag, 335 p.

Simpson, Fiona, and Bahr, Karsten, 2005, Practical magnetotellurics: Cambridge, Cambridge University Press, 254 p.

Vozoff, Keeva, 1987, The magnetotelluric method, in Nabighian, M.N., ed., Electromagnetic methods in applied geophysics, v. 1, Society of Exploration Geophysicists, Tulsa, Okla., p. 641–707.

Weaver, C.S., Grant, W.C., and Shemeta, J.E., 2012, Local crustal extension at Mount St. Helens, Washington: Journal of Geophysical Research, Solid Earth, v. 92, no. B10, p. 10170–10178.

Wynn, J.C., 2006, Mapping ground water in three dimensions—an analysis of airborne geophysical surveys of the upper San Pedro River Basin, Cochise County, southeastern Arizona: U.S. Geological Survey Professional Paper 1674, 33 p.

Zonge, K.L., and Hughes, L.J., 1991, Controlled source audio-frequency magnetotellurics, in Nabighian, M.N., ed., Electromagnetic Methods in Applied Geophysics, v. 2, Society of Exploration Geophysicists, Tulsa, Okla., p. 713–809.

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