Directory of People

Gary Egbert

Gary Egbert photo

Discipline: Geology and Geophysics
Office: Weniger 503
Phone: 541-737-2947
Fax: 541-737-2064


Geophysics, physical oceanography

Research Interests

Electromagnetic geophysics, ocean tides, numerical modeling, statistical methods, geophysical inversion and data assimilation

Current Research

Development of practical and reliable 3D inverse methods for magnetotellurics and other EM induction data

Imaging and interpretation of continental structure with long period MT data (e.g., EarthScope)

Improving external source models for global induction studies of mantle conductivity

Ocean tides: large scale energetics, dissipation, and mixing; improved models of coastal ocean tides


BA, Mathematics, University of California, Berkeley 1977

MS, Statistics, University of Washington 1981

PhD, Geophysics, University of Washington 1987


Professor, College of Oceanic and Atmospheric Sciences,

Oregon State University 2001-Present

Associate Professor, College of Oceanic and Atmospheric Sciences,

Oregon State University 1998-2001

Associate Professor (Sr. Res.), College of Oceanography,

Oregon State University 1994-1998

Phoebe Apperson Hearst Visiting Lecturer, Engineering Geoscience,

Dept. of Materials Science and Mineral Engineering,

Univ. California, Berkeley 1991

Assistant Professor (Sr. Res.), College of Oceanography,

Oregon State University 1988-1994


Sun, J., Kelbert, A., & Egbert, G. D. (2015). Ionospheric current source modeling and
global geomagnetic induction using ground geomagnetic observatory data. Journal of
Geophysical Research: Solid Earth, 120(10), 6771-6796.

Durski, S. M., Kurapov, A. L., Allen, J. S., Kosro, P. M., Egbert, G. D., Shearman, R. K., & Barth, J. A., 2015. Coastal ocean variability in the US Pacific Northwest region: seasonal patterns, winter circulation, and the influence of the 2009–2010 El Niño. Ocean Dynamics, 65(12), 1643-1663.

Yang, B., Egbert, G. D., Kelbert, A., & Meqbel, N. M. 2015. Three-dimensional electrical resistivity of the north-central USA from EarthScope long period magnetotelluric data.
Earth Planet. Sci. Lett., 422, 87-93.

Stammer,S.,  RD Ray, OB Andersen, BK Arbic, W Bosch, L Carrère, Y Cheng, DS Chinn, BD Dushaw, GD Egbert, SY Erofeeva, HS Fok, JAM Green, S Griffiths, MA King, V Lapin, FG Lemoine, SB Luthcke, F Lyard, J Morison, M Müller, L Padman, JG Richman, JF Shriver, CK Shum, E Taguchi, Y Yi, 2014, Accuracy assessment of global barotropic ocean tide models, Rev. Geophys., 243-282

Kelbert, A., N. M. Meqbel, G. D. Egbert & K. Tandon, 2014. ModEM: A modular system for inversion of electromagnetic geophysical data, Comp. Geosci., 66, 40-53, ISSN 0098-3004,

Meqbel, N.M., G. D. Egbert, P. E. Wannamaker, A. Kelbert & A. Schultz, 2014. Deep electrical resistivity structure of the northwestern U.S. derived from 3-D inversion of USArray magnetotelluric data, Earth Planet. Sci. Lett., 402, 290-394, ISSN 0012-821X,

Osborn, J. J., A. L. Kurapov, G.D. Egbert & P.M. Kosro, 2014. Intensified diurnal Tides along the Oregon Coast, J. Phys. Oceanogr. 44, 1689-1703.

Zaron, E. D., & G. D. Egbert, 2014: Time-variable refraction of the internal tide at the Hawaiian Ridge. J. Phys. Oceanogr., 44, 538–557. doi:

Schmittner, A. & G. D. Egbert., 2014. An improved parameterization of tidal mixing for ocean models. Geosci. Mod. Dev., 7, 211-224, doi:10.5194/gmd-7-211-2014.

Ray, R. D., & Egbert, G. D. (2013). Reply to comments by SR Dickman on ‘Fortnightly Earth rotation, ocean tides and mantle anelasticity’. Geophysical Journal International, 192(3), 1055-1058.

Smirnov, M. Y. & G. D. Egbert, 2012. Robust principal components analysis of electromagnetic arrays with missing data. Geophys. J. Int., 1423-1438, doi: 10.1111/j.1365-246X.2012.05569.x .

Sun. J. & G.D. Egbert, 2012. Spherical decomposition of electromagnetic fields generated by quasi-static currents, Int. J. Geomath., (on line)DOI 10.1007/s13137-012-0039-0.

Egbert, G. D. 2012, Hybrid conjugate gradient-Occam algorithms for inversion of Multi-frequency and Multi-transmitter EM data. Geophys J. Int., 190, 255-266,doi: 10.1111/j.1365-246X.2012.05523.x

Yu, P., A. L. Kurapov, G. D. Egbert, J. S. Allen & P. M. Kosro, 2012. Variational assimilation of HF radar surface currents in a coastal ocean model off Oregon, submitted to Ocean Model.

Sun, J. & G. D. Egbert, 2012. A thin-sheet model for global electromagnetic induction,

Geophys. J. Int., 189, 343–356. doi: 10.1111/j.1365-246X.2012.05383.x.

Ray, R. D. & G. D. Egbert, 2012. Fortnightly earth rotation, ocean tides, and mantle anelasticity, Geophys. J. Int., 189, 400–413. doi: 10.1111/j.1365-246X.2012.05351.x

Kelbert, A., G. D. Egbert & C. deGroot-Hedlin, 2012. Crust and upper mantle electrical conductivity beneath the Yellowstone Hotspot Track, Geology, 40, 447-450, doi: 10.1130/G32655.1.

Egbert, G. D. & A. Kelbert, 2012. Computational Recipes for Electromagnetic Inverse Problems. Geophys. J. Int. 189, 251–267. doi: 10.1111/j.1365-246X.2011.05347.x

Osborne, J J., A. L. Kurapov, G. D. Egbert & P. M. Kosro, 2011, Spatial and temporal variability of the M2 internal tide generation and propagation on the Oregon shelf, J. Phys. Ocean, 41, 2037-2062. doi: 10.1175/JPO-D-11-02.1

Kurapov, A.L. D. Foley, P. T. Strub, G. D. Egbert & J. S. Allen, 2011, Variational assimilation of satellite observations in a coastal ocean model off Oregon, J. Geophys. Res., 116, C05006, doi:10.1029/2010JC006909, 2011

Partro, P.K. & G. D. Egbert, 2011. Application of 3D Inversion to Magnetotelluric profile data from the Deccan volcanic province of western India. Phys. Earth. Planet. Int., 33-46 DOI: 10.1016/j.pepi.2011.04.005as.

Egbert, G.D., 2011. Magnetotelluric Data Processing, in Encyclopedia of Solid Earth Geophysics, H.K. Gupta., Springer.

Kappler, K.N., H.F., Morrison & G. D. Egbert, 2010. Long term monitoring of ULF magnetic fields at Parkfield, California, J. Geophys. Res., 115, B04406, doi:10.1029/2009JB006421, 2010.

Ray, R.D., Egbert, G. D. & S. Y. Erofeeva, 2010. Tide predictions in shelf and coastal waters: status and prospects, in Coastal Altimetry, S. Vignudelli, A. Kostianoy, P. Cipollini, and J. Benveniste, Springer.

Egbert, G. D. Erofeeva, S. Y. & R. D. Ray, 2010. Assimilation of Altimetry Data for Nonlinear Shallow-water Tides:Quarter-diurnal tides of the Northwest European Shelf, Cont. Shelf. Res., 668-679.

Kurapov, A.L., J. S. Allen & G. D. Egbert, 2010. Combined Effects of Wind-Driven Upwelling and Internal Tide on the Continental Shelf, J. Phys. Ocean., 40, 737-756,doi:10.1175/2009JPO4183.1

Egbert, G. D., S. Y. Erofeeva, S.C. Han, S. B. Luthcke & R. D. Ray 2009. Assimilation of GRACE tide solutions into a numerical hydrodynamic inverse model, Geophys. Res. Lett., 6, L20609, doi:10.1029/2009GL040376.

Kelbert, A, Schultz, A. & G. D. Egbert, 2009. Global electromagnetic induction constraints on transition-zone water content variations, Nature460, 1003-1006 doi:10.1038/nature08257.

Kurapov, A. L., Egbert. G. D., Allen, J.S. & R. N. Miller, 2009. Representer-based analyses in the coastal upwelling system, Dyn. Oc. Atmos., 48, doi:10.1016/j.dynatmoce.2008.09.002

Zaron , E. D., Chavanne, C., Egbert, G.D. & P. Flament, 2009. Baroclinic Tidal Generation in the Kauai Channel Inferred from High-Frequency Radio Doppler Current Meters, Dyn. Oc. Atmos. 48:93-120,

Siripunvaraporn, W. & G. Egbert, 2009. WSINV3DMT: Vertical magnetic field transfer function inversion and parallel implementation, Phys. Earth. Planet. Inter., 317-329.

Springer, S. R., R. M. Samelson, J. S. Allen, G. D. Egbert, A. L. Kurapov, R. N. Miller & J. C. Kindle, 2009.   A nested grid model of the Oregon Coastal Transition Zone: Simulations and comparisons with observations during the 2001 upwelling season,  J. Geophys. Res., 114, C02010.

Patro P. K. & G. D. Egbert, 2008. Regional conductivity structure of Cascadia: Preliminary results from 3D inversion of USArray transportable array magnetotelluric data, Geophys. Res. Lett., 35, L20311, doi:10.1029/2008GL035326.

Kelbert, A., Egbert, G. D. & A. Schultz, 2008. Non-linear conjugate gradient inversion for global EM induction: resolution studies, Geophys., J. Int., 173, 365-381, doi:10.1111/j.1365-246X.2008.03717.x.

Durski, S. M.; Samelson, R. M.; Allen, J. S. & G. D. Egbert, 2008. Normal-Mode Instabilities of a Time-Dependent Coastal Upwelling Jet. Journal of Physical Oceanography, 38 2056-2071, DOI: 10.1175/2008JPO3803.1.

Muccino, J. C., Arango, H. G., Bennett, A. F., Chua, B. S. Cornuelle, B. D., DiLorenzo, E., Egbert, G. D., Haidvogel, D., Hao, L., Levin, J. C. Miller, A. J., Moore, A. M., & E. D. Zaron, 2008. The inverse ocean modeling system. II: Application, J. Atmos. Ocean. Tech.,25, 1623-1637.

Kurapov, A. Egbert, G. D., Allen, J. S., & R. N. Miller, 2007. Representer-based variational assimilation in nonlinear model of nearshore circulation, J. Greophys. Res., 112, C11019, doi:10.1029/2007JC004117.

Durski, S., J. S. Allen, G. D. Egbert, & R. M. Samelson, 2007. Scale evolution of finite amplitude instabilities on a coastal upwelling front, J. Phys. Ocean., 37, 837-854.

Siripunvaraporn, W., & G. D.Egbert, 2007. Data space conjugate gradient inversion for 2-D magnetotelluric Data, Geophys., J. Int, 170, 986-994.

Zaron, E. D. & G. D. Egbert, 2007. The impact of the internal tide on data-assimillative estimates of the surface tide, Ocean Mod., 18, 210-216.

Johnston, M. J. S., Sasai, Y., Egbert G. D. & R. J. Mueller, 2006. Seismomagnetic Effects from the Long-Awaited 28 September 2004 M6.0 Parkfield Earthquake, Bul. Seis. Soc. Amer., 96,S206-S220, doi:10.1785/0120050810.

Zaron, E. D. & G. D. Egbert, 2006. Verification studies for a Z-coordinate primitive equation model: tidal conversion at a mid-ocean ridge, Ocean Modeling, doi:10.1016/j.ocemod.2006.05.007.

Balasis, G. & G. D. Egbert, 2006. Empirical orthogonal function analysis of magnetic observatory data: Further evidence for non-axisymmetric sources for satellite induction studies, Geophys. Res. Lett., 33, L11311, doi:10.1029/2006GL025721.

Andersen, O. B., G. D. Egbert, S. Y. Erofeeva & R. D. Ray, 2006. Mapping shallow water tides: a look at the past and future. Ocean Dynamics, doi:10.1007/s10236-006-0073-7.

Benjamin, D., J. Wahr, R .D. Ray, G. D. Egbert & S. Desai, 2006. Constraints on mantle anelasticity from geodetic observations and implications for the J2 anomaly, Geophys. J. Int., 165, 3-16.

Egbert, G. D., 2006. Robust electromagnetic transfer function estimates, in Encyclopedia of Geomagnetism and Paleomagnetism, D. G. Gubbbins & E. Herrero-Bervera, Eds.

Egbert, G. D., 2006. Inverse modeling of EM, in Encyclopedia of Geomagnetism and Paleomagnetism, D. G. Gubbbins & E. Herrero-Bervera, Eds.

Zaron, E. D., & G. D. Egbert, 2006. Estimating Open-Ocean Barotropic Tidal Dissipation: The Hawaiian Ridge, J. Phys. Ocean, 36, 1019-1035.

Ray, R. D., G. D. Egbert & S. Y. Erofeeva, 2005. A brief overview of tides in the Indonesian Seas, Oceanograpy, 18, 74-79.

Erofeeva, S. Y., L. Padman & G. D. Egbert, 2005. Assimilation of ship-mounted ADCP data for barotropic tides: Application to the Ross Sea, Jour. Atmos. Ocean. Tech, 22, 721-734.

Kurapov, A. L., J. S. Allen, G. D. Egbert, R. N. Miller, P. M. Kosro, M. Levine, T. Boyd & J. A. Barth, 2005. Moored ADP velocity data assimilation in a model of coastal wind-driver circulation off Oregon: multivariate capabilities, Jour. Phys. Ocean22, 721-734.

Kurapov, A. L., J. S. Allen, G. D. Egbert & R. N. Miller, 2005. Modeling bottom mixed layer variability on the mid-Oregon shelf during summer upwelling, Jour. Phys. Ocean., 35, 1629-1649.

Siripunvaraporn, W, G, Egbert & M. Uyeshima, 2005. Interpretation of 2-D Magnetotelluric Profile Data with 3-D Inversion: Synthetic Examples, Geophsy. J. Int, 160, 804-814.

Siripunvaraporn, W., G. Egbert, Y. Lenburi & M. Uyeshima, 2005. Three-dimensional magnetotelluric inversion: data space method, Phys. Earth Planet. Inter., 140, 3-14.

Kurapov, A. L., J. S. Allen, G. D. Egbert, R. N. Miller, P. M. Kosro, M. Levine & T. Boyd, 2005. Distant effect of assimilation of moored ADP currents into a model of coastal wind-driven circulation off Oregon, Jour. Geophys. Res., 110, C020022, doi:10.1029/2003JC002195.

Siripunvaraporn, W., M. Uyeshima & G. Egbert, 2004. Three-Dimensional Inversion for Network-Magnetotelluric Data, Earth, Planets, Space, 56, 893-902.

Balasis, G., G. D. Egbert & S. Maus, 2004. Local time effects in satellite estimates of electromagnetic induction transfer functions, Geophys. Res. Lett., 31,L16610,doi:10.1029/2004GL020147.

Ray, R. D. & G. D. Egbert, 2004. The global S1 tide, J. Phys. Ocean., 34, 1922-1935.

Bedrosian, P. A., M. J. Unsworth, G. D. Egbert & C. H. Thurber, 2004. Geophysical images of the creeping segment of the San Andreas fault: implications for the role of crustal fluids in the earthquake process, Tectonophysics, 385, 137-158.

Egbert, G. D., R. D. Ray & B. G. Bills, 2004. Numerical modeling of the global M2 tide in the present day and during the last glacial maximum, J. Geophys. Res., 109, C3003, doi:10.1029/2003JC001973.

Ray, R. D., D. D. Rowlands & G. D. Egbert, 2003. Tidal models in a new era of satellite gravimetry, Space Sci. Rev., 108, 271-282.

Rudnick, D. L., T. J. Boyd, R. E. Brainard, G. S. Carter, G. D. Egbert, M. C. Gregg, P. E. Holloway, J. M. Klymak, E. Kunze, C. M. Lee, M. D. Levine, D. S. Luther, P. J. Martin, M. A. Merrifield, J. N. Moum, J. D. Nash, R. Pinkel, L. Rainville, T. B. Sanford, 2003. From tides to mixing along the Hawaiian Ridge, Science, 301, 355-347.

Egbert, G. D. & R. D. Ray, 2003. Semi-diurnal and diurnal tidal dissipation from TOPEX/POSEIDON altimetry, Geophys. Res. Lett., 30(17), 1907, doi:10.1029/2003GL017676.

Erofeeva, S. Yu., G. D. Egbert & P. M. Kosro, 2003. Tidal currents on the central Oregon shelf: Models, data, and assimilation, Jour. Geophys. Res., 108(C5), doi:10.1029/2002JC001615.

Kurapov, A. L., G. D. Egbert, J. S. Allen, R. N. Miller, S. Yu., Erofeeva & P. M. Kosro, 2003. M2 internal tide off Oregon: inferences from data assimilation, J. Phys. Ocean., 33, 1733-1757.

Egbert, G. D & R. D. Ray, 2003. Deviation of long period tides from equilibrium: kinematics and geostrophy, J. Phys. Ocean, 33, 822-839.

Siripunvaraporn, W., G. Egbert & Y. Lenbury, 2002. Numerical accuracy of magnetotelluric modeling: A comparison of finite difference approximations, Earth, Planets, Space, 54, 721-726,.

Bedrosian, P. A., M. A. Unsworth & G. D. Egbert, 2002. Magnetotelluric imaging of the creeping segment of the San Andreas Fault near Hollister, Geophys. Res. Lett., 29, 1-4.

Egbert, G. D., 2002. Processing and interpretation of Electromagnetic Induction Array Data: A Review, Surv. Geophys., 23, 207-249.

Egbert G. D., 2002. On the generation of ULF magnetic variations by Conductivity Fluctuations in a Fault Zone Pure Appl. Geophys., 159, 1205-1228.

Oke, P. R., J. S. Allen, R. N. Miller, G. D. Egbert & P. M. Kosro, 2002. Assimilation of surface velocity data into a primitive equation coastal ocean model, Jour. Geophys. Res., doi:10.1029/2000JC00511.

Oke, P. R., J. S. Allen, R. N. Miller & G. D. Egbert, 2002. A modeling study of the three-dimensional continental shelf circulation off Oregon. Part II: Dynamical Analysis, J. Phys. Ocean, 32, 1383-1403.

Oke, P. R., J. S. Allen, R. N. Miller, G. D. Egbert, J. A. Austin, J. A. Barth, T. J. Boyd, P. M. Kosro & M.D. Levine, 2002. A modeling study of the three-dimensional continental shelf circulation off Oregon. Part I: Model-Data Comparisons, J. Phys. Ocean, 32, 1360-1382.

Kurapov, A. L., G. D. Egbert, R. N. Miller & J. S. Allen, 2002. Data assimilation in a baroclinic coastal ocean model: ensemble statistics, comparison of methods, Month. Weath. Rev., 130, 1009-1025.

Egbert. G.D. & S. Y. Erofeeva, 2002. Efficient inverse modeling of barotropic ocean tides, J. Atmos. Ocean. Tech., 19, 183-204.

Egbert, G. D & R. D. Ray, 2001. Estimates of M2 Tidal Energy Dissipation from TOPEX POSEIDON Altimeter Data, J. Geophys. Res., 106, 22,475-22,502.

Ray, R. D., R. J. Eanes, G. D. Egbert & N. E. Pavlis, 2001. Error spectrum for the global M2 ocean tide, Geophys. Res. Lett., 28, 21-25.

Eisel, M. & G. D. Egbert, 2001. On the stability of magnetotelluric transfer function estimates and the reliability of their variances, Geophys. Jour. Int., 144, 65-82.

Unsworth, M., P. Bedrosian, M. Eisel, G. Egbert & W. Siripunvaraporn, 2000. Along strike variations in the electrical structure of the San Andreas Fault at Parkfield, California, Geophys. Res. Lett., 27, 3021-3024.

Scott, R. K., J. S. Allen, G. D. Egbert & R. N. Miller, 2000. Assimilation of surface current measurements in a coastal ocean model, Jour. Phys. Ocean., 30, 2359-2378.

Egbert, G. D. & R. D. Ray, 2000. Significant tidal dissipation in the deep ocean inferred from satellite altimeter data, Nature, 405, 775-778.

Siripunvaraporn, W. & G. Egbert, 2000. An efficient data-subspace inversion method for two-dimensional magnetotelluric data, Geophysics, 65, 791-803.

Egbert, G. D., M. Eisel, O. S. Boyd & H.F. Morrison, 2000. DC trains and Pc3s: source effects in mid-latitude geomagnetic transfer functions, Geophys. Res. Lett., 27, 25-28.

Unsworth, M. A., G. D. Egbert & J. R. Booker, 1999. High resolution electromagnetic imaging of the San Andreas fault, J. Geophys. Res., 104, 1131-1150.

Robertson, R., L. Padman, & G. D. Egbert, 1998. Tidal currents in the Weddell Sea, Antarctic Research Series, 75, 342-369.

Egbert, G.D., 1997. Tidal data inversion: Interpolation and Inference, Prog. Ocean., 40, 53-80.

Dushaw, B.D., G. D. Egbert, P. F. Worcester, B. D. Cornuelle, B. M. Howe & K. Metzger, 1997. A TOPEX/POSEIDON global tidal model (TPXO.2) and barotropic tidal currents determined from long range acoustic transmissions, Prog. Ocean., 40, 337-3689.

Ray, R. D. & G. D. Egbert, 1997. The flux of tidal power across 60 S, Geophys. Res. Lett., 24, 543-546.

Shum, C. K., P. L. Woodworth, O. B. Andersen, G. Egbert, O. Francis, C. King, S. Klosko, C. Le Provost, X. Li, J. Molines, M. Parke, R. Ray, M. Schlax, D. Stammer, C. Tierney, P. Vincent, P & C. Wunsch, 1997. Comparison of recent global tidal models, J. Geophys. Res., 102, 25,173-25,194.

Egbert, G. D., 1997. Robust multiple station magnetotelluric data processing, Geophys. J. Int., 130, 475-496.

Unsworth, M. J., P. E. Malin, G. D. Egbert & J. R. Booker, 1997. Internal structure of the San Andreas Fault at Parkfield, California, Geology, 25, 359-362.

Egbert, G. D. & D. W. Livelybrooks, 1996. Single station magnetotelluric impedance estimation: coherence weighting and the regression M-estimate, Geophysics, 61, 964-970.

Egbert, G. D. & A. F. Bennett, 1996. Data assimilation methods for ocean tides, in Modern approaches to data assimilation in ocean modeling, P. Malonottte-Rizzoli, ed., pp 147-179, Elsevier.

Chao, B. F., R. D. Ray, J. M. Gipson, G. D. Egbert & C. Ma, 1996. Diurnal/semidiurnal polar motion excited by oceanic tidal angular momentum, J. Geophys. Res., 101, 20151-20163.

Chao, B. F., R. D. Ray & G. D. Egbert, 1995. Diurnal/semidiurnal oceanic tidal angular momentum: Topex/Poseidon models in comparison with Earth's rotation rate, Geophys. Res. Lett., 22, 1993-1996.

Egbert, G. D., A. F. Bennett & M. G. G. Foreman, 1994. TOPEX/POSEIDON Tides estimated using a global inverse model, J. Geophys. Res., 99, 24,821-24,852.

Egbert, G. D. & J. R. Booker, 1993. Imaging crustal structure in Southwestern Washington with small magnetometer arrays, J. Geophys. Res., 98, 15,967-15,985.

Egbert, G. D., J. R. Booker &. Schultz, 1992. Very Long Period Magnetotellurics at Tucson Observatory: Estimation of Impedances, J. Geophys. Res., 97, 15,113-15,128.

Egbert, G. D. &J. R. Booker, 1992. Very Long Period Magnetotellurics at Tucson Observatory: Implications for Mantle Conductivity, J. Geophys. Res., 97, 15,099-15,112.

Egbert, G. D., 1992. Non-causality of the discrete time magnetotelluric impulse response, Geophysics, 57, 1354-1358.

Egbert, G. D., 1992. Sampling bias in VGP longitudes, Geophys. Res. Lett., 19, 2353-2356.

Egbert, G. D., 1991. On the synthesis of a large geomagnetic array from small overlapping arrays, Geophys. Jour. Int., 106, 37-51.

Egbert, G. D., 1990. Comments on "Concerning dispersion relations for the magnetotelluric impedance tensor" by E. Yee and K.V. Paulson, Geophys. Jour. Int., 102, 1-8.

Egbert, G. D., 1989. Multivariate analysis of geomagnetic array data II: Random source models, J. Geophys. Res., 94, 14,229-14,267.

Jones, A. G., A. D. Chave, G. D. Egbert, D. Auld & K. Bahr, 1989. A comparison of techniques for magnetotelluric response function estimation, J. Geophys. Res., 94, 14,201-14,214.

Wannamaker, P. E., J. R. Booker, J. H. Filloux, A. G. Jones, G. R. Jiracek, A. D. Chave, P. Tarits, H. S. Waff, G. D. Egbert, C. T. Young, J. A. Stodt, M. Martinez, L. K. Law, T. Yukatake, J. S. Segawa, A. White &. W. Green, Jr., 1989. Magnetotelluric observations across the Juan de Fuca subduction system in the EMSLAB project, J. Geophys. Res., 94, 14,111-14,126.

Egbert, G. D. & J. R. Booker, 1989. Multivariate analysis of geomagnetic array data I: The response space, J. Geophys. Res., 94, 14,227-14,248.

Egbert, G. D. & M. B. Baker, 1986. Multiple state stochastic models for the long range transport and removal of atmospheric tracers, Quart. J. R. Met. Soc., 112, 843-867.

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