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MASTERS, T. GUY

Professor of Geophysics

Degrees:

• B.S., University of Manchester, England
• Ph.D., University of Cambridge, England

Research Interests:

• The study the fine structure of the earth and the 3-D structure of the mantle and core using body waves, surface waves, and free oscillations
• Development of reference Earth models and the integration of mineral physics, geodynamics, and geochemistry into Earth models

Courses Recently Taught:

• SIO 103: Introduction to Geophysics
• SIO 227B: Advanced Seismology I
• SIO103: Introduction to Geophysics
• SIO224: Internal Constitution/Earth
• SIO227A: Introduction to Seismology
• SIO227B: Advanced Seismology I

Honors and Awards:

• Fellow, Royal Society, 2005
• Green Scholar, 1979
• Fellow, AGU 1995

Mentoring:

• Liu, Qinya (Post Doc; 2007-2008)
• Oki, Satoko (Post Doc; 2007-2008)
• Ishii, Miaki (Post Doc; 2003-2005)
• Becker, Thorsten (Post Doc; 2002-2004)
• Manners, Ursula (Graduate; 2002-2008)
• Houser/Reif, Christine (Graduate; 2000-2005)
• Pari, Giovanni (Post Doc; 1997-2000)
• Schulte-Pelkum, Vera (Graduate; 1995-2001)
• Laske, Gabi (Post Doc; 1994-1006)
• Um, Junho (Post Doc; 1994-1997)
• Johnson, Stuart (Graduate; 1992-1997)
• Hanson, Jeffrey (Graduate; 1991-1998)
• Bhattacharyya, Joydeep (Graduate; 1989-1996)
• Bolton, Harold (Graduate; 1989-1996)
• Henson, Ivan (Post Doc; 1987-1988)
• Scott, Jennifer (Graduate; 1985-1992)
• Smith, Mark (Graduate; 1985-1989)
• Widmer, Rudi (Graduate; 1985-1991)
• Woodward, Robert (Graduate; 1983-1989)
• Ritzwoller, Michael (Graduate; 1982-1987)
• Gomberg, Joan (Graduate; 1979-1986)

Masters, G., and A.M. Dziewonski, 1997, Mantle and core studies, Geotimes, 42, 59--60

Masters, G., 1997, Tracking slabs in the lower mantle, Nature, 386, 558

Masters, G., 1997, Hess medal citation for Tom Ahrens, EOS Trans. AGU, 78, 319

Laske, G., and G. Masters, 1997 (electronic) A global digital map of sediment thickness, Link to publication

Mooney, W.D., G. Laske, and G. Masters, 1998,CRUST 5.1: A global crustal model at 5 X 5 degrees, J. Geophys. Res., 103, 727--747

Laske, G., and G. Masters, 1998, Surface-wave polarization data and global anisotopic structure, Geophys. J. Int., 132, 508--520

Masters, G., and K. Richards-Dinger, 1998, On the efficient calculation of ordinary and generalized spherical harmonics, Geophys. J. Int., 135, 307--309

Laske, G., and G. Masters, 1999, Limits on differential rotation of the inner core from an analysis of the Earth's free oscillations, Nature, 402, 66--69

Masters, G., G. Laske, and F. Gilbert, 2000, Autoregressive estimation of the splitting matrix of free oscillation multiplets, Geophys. J. Int., 141,25--42

Masters, G., G. Laske, H. Bolton, and A. Dziewonski, 2000, The relative behavior of shear velocity, bulk sound speed, and compressional velocity in the mantle: implications for chemical and thermal structure, in: Earth's deep interior, AGU Monograph 117, Ed S. Karato, 63--87

Masters, G., G. Laske, and F. Gilbert, 2000, Matrix autoregressive analysis of free oscillation splitting and coupling, Geophys. J. Int., 143, 478--489

Masters, G. G. Laske, and F. Gilbert, 2000, Large-scale Earth Structure from Analysis of Free Oscillaion Splitting and Coupling. In: Problems in geophysics in the new milleniuem, eds E. Boschi, G. Ekstrom, A. Morelli, Edirice Compositori, pp 63--87

Masters, G., 2000 SSA medal citation for Adam Dziewonski, Seis. Res. Lett, 71, 457--458

Bolton, H., and G. Masters, 2001, Travel times of P and S from the global digital networks: implications for the relative variation of P and S in the mantle. J. Geophys. Res., 106, 13,527--13,540.

Schulte-Pelkum, V., G. Masters, and P. Shearer, 2001, Upper mantle anisotropy from long-period P polarization, J. Geophys. Res., 106, 21,917--21,934

Laske, G., and G. Masters, 2003 The Earth's free oscillations and the differential rotation of the inner core, In: Earth's Core,: Dynamics, Structure, Rotation; eds Dehant et al., Geodynamics series 31, AGU

Masters, G., and D. Gubbins, 2003 On the resolution of density within the Earth Phys. Earth Planet. Int., 140, 159--167

Gubbins, D., D.Alfe, G. Masters, D,G, Price, and M.J. Gillan, 2003 Can the Earth's dynamo run on heat alone? Geophys. J. Int., 155, 609--622.

Gubbins, D., D.Alfe, G. Masters, D,G, Price, and M.J. Gillan, 2004 Gross thermodynamics of two-component core convection. Geophys. J. Int., 157, 1407--1414.

Montelli, R, G. Nolet, G. Masters, F.A. Daheln, and S-H Hung, 2004 Global P and PP traveltime tomography: rays versus waves. Geophys. J. Int., 158, 637--654.

Montelli, R, G. Nolet, F.A. Daheln, G. Masters, E.E. Engdahl, and S-H Hung, 2004. Finite-frequency tomography reveals a variety of plumes in the mantle Science, 303, 338--343

Schubert, G., G. Masters, P.Olson, and P. Tackley, 2004 Superplumes or plume clusters? Phys. Earth Planet. Int., 146, 147--162

Davis, P., M. Ishii, and G. Masters, 2005, An assessment of the accuracy of GSN sensor response information, Seis. Res. Lett, 76, 678--683.

Lawrence, J., P. Shearer, and G. Masters, 2006, Mapping attenuation beneath North America using waveform cross-correlation and cluster analysis, Geophys. Res. Lett, 33, 7, L07315

Montelli, R., G. Nolet, F.A. Dahlen, and G. Masters, 2006, A catalogue of deep mantle plumes: New results from finite frequency tomography. Geochem. Geophys. Geosyst. 7, 11, Q11007

Masters, G., 2007, Core density. In: Encyclopedia of geomagnetism and paleomagnetism, eds D. Gubbins, E. Herrero-Bervera, Springer, Netherlands, 82--84

Houser, C., G. Masters, P.Shearer, and G.Laske, 2008, Shear and compressional models of the mantle from cluster analysis of long-period waveforms, Geophys. J. Int., 174, doi: 10.1111/j.1365-246X.2008.03763.x

Houser, C., G. Masters, M. Flanagan, and P.Shearer, 2008, Determination and analysis of long-wavelength transition zone structure using SS precursors, Geophys. J. Int., 174, doi: 10.1111/j.1365-246X.2008.03879.x

Gubbins, D., G. Masters and F. Nimmo, 2008, A thermochemical boundary layer at the base of Earth's outer core and independent estimate of core heat flux, Geophys. J. Int., 174, doi: 10.1111/j.1365-246X.2008.03719.x

Manners, U., and G. Masters, 2009, Analysis of core-mantle boundary structure using S and P diffracted waves, Geophys. J. Int., submitted.

Manners, U., Q. Liu, G, Masters, and J. Tromp, 2009, Modeling the lowermost mantle using diffracted phases and finite frequency kernels, Geophys. J. Int., submitted.

Manners, U., and G. Masters, 2009, Relations between shear velocity and bulk sound speed in the lower mantle, Geophys. J. Int., submitted.

Manners, U., and G. Masters, 2009, A comparison of methods for global teleseismic earthquake relocation, Bull.Seism. Soc. Am., submitted.