Curriculum Vitae

Gregory A. Lyzenga

Education

• Ph.D. Applied Physics (Geophysics), California Institute of Technology, June 1980.
  
  
• MS Applied Physics, California Institute of Technology, June 1977.
  
  
• BS Physics, Distinction and Departmental Honors, Harvey Mudd College, June 1975.
  
  

Positions

• 1990-Present:
  Associate Professor of Physics
  Harvey Mudd College
  Claremont, CA 91711
  
  
• 1980-Present:
  Member Technical Staff/Technical Group leader
  Jet Propulsion Laboratory
  Pasadena, CA 91109
  
  
• 1979-1980:
  Graduate Research Assistant/Postdoctoral Research Fellow
  Calif. Inst. of Technology
  Pasadena, CA 91125
  
  

Memberships

• American Geophysical Union
• American Association for the Advancement of Science

Research Interests

• Solid-earth geophysics and geodynamics
• Measurement of crustal deformation by space geodetic methods
• Numerical modeling of crustal tectonics and rheology
• Supercomputer applications of simulation and visualization
• Impact and shock compression of geologic materials
• Characterization of asteroids by occultation and photometric methods

Awards

• Fannie and John Hertz Fellowship (1975-79)
• National Science Foundation Honorable Mention (1975)
• NASA New Technology Award (1986)
• NASA Group Achievement Award (1989)
• NASA New Technology Award (1990)

Personal

Publications

• Thesis:

  Lyzenga, G.A., Shock Temperatures of Materials: Experiments and Applications to the High Pressure Equation of State, Ph.D. Thesis, California Institute of Technology, Division of Geological and Planetary Sciences (1980)

• Books:

  Fox, G. C., M. A. Johnson, G. A. Lyzenga, S. W. Otto, J. K. Salmon, and D. W. Walker, Solving Problems on Concurrent Processors, Volume I: General Techniques and Regular Problems, Prentice-Hall, Englewood Cliffs, NJ, 1988.

  Lyzenga, G. A., Fields and Waves: An Introduction to Tensors and the Physics of Continuous Media, Harvey Mudd College (Class notes assembled from the lectures of A. E. Stoddard), Claremont, CA, 1993.

• Papers:

  Bell, G.D. and G.A. Lyzenga, Absolute gf-values for Nine Resonance Lines of Neutral Scandium, Proc. R. Soc. Lond. A, 351, 581(1976)

  Lyzenga, G.A. and T.J. Ahrens, The Relation Between the Shock-induced Free Surface Velocity and the Postshock Specific Volume of Solids, J. Appl. Phys., 49, 201(1978)

  Lyzenga, G.A. and T.J. Ahrens, A Multi-wavelength Optical Pyrometer for Shock Compression Experiments, Rev. Sci. Instr., 50, 1421 (1980)

  Lyzenga, G.A. and T. J. Ahrens, Shock Temperature Measurements in Mg2SiO4 and SiO2 at High Pressures. Geophys. Res. Lett., 7, 144(1980)

  Lyzenga, G.A., Ahrens, T. J., Nellis, W. J., and Mitchell, A. C., The Temperature of Shock-Compressed Water, J. Chem. Phys., 76(12), 6282 (1982)

  Ahrens, T.J., G. A. Lyzenga, and A. C. Mitchell, Temperatures Induced by Shock Waves in Minerals: Applications to Geophysics, Advances in Earth and Planetary Sciences, 12, 579-594 (1982)

  Lyzenga, G. A., Optical Pyrometry at High Shock Pressures and its Interpretation, Shock Waves in Condensed Matter, AIP Conference Proceedings No. 78, 268-276, American Institute of Physics (1982)

  Lyzenga, G. A., and T. J. Ahrens, One-dimensional Isentropic Compression, Shock Waves in Condensed Matter, AIP Conference Proceedings No. 78, 231-235, American Institute of Physics (1982)

  Lyzenga, G.A. and T.J. Ahrens, Shock Temperatures and Equations of State of SiO2 and their Geophysical Implications, J. Geophys. Res., 88, 2431-2444 (1983)

  Slade, M.A., G. A. Lyzenga, A. Raefsky, Modeling of the Surface Static Displacements and Fault Plane Slip for the 1979 Imperial Valley Earthquake, Bull. Seismol. Soc. Am., 74, 2413-2433 (1984)

  Lyzenga, G. A., A. Raefsky, and B. H. Hager, Finite Elements and the Method of Conjugate Gradients on a Concurrent Processor, in Computers in Engineering 1985, vol. 3, Proceedings of the 1985 ASME International Computers in Engineering Conference and Exhibition, Boston, MA, August 4-8, 1985.

  Lyzenga, G. A., K. S. Wallace, A. Raefsky, P. M. Groth, and J. L. Fanselow, Tectonic Motions in California Inferred from Very Long Baseline Interferometry Observations, 1980-1984, J. Geophys. Res., 91, 9473-9487 (1986)

  Lyzenga, G. A. and M.P. Golombek, North American-Pacific Relative Plate Motion in Southern California from Interferometry, Science, 233, 1181-1183 (1986)

  Ivins, E. R. and G. A. Lyzenga, Stress Patterns in an Interplate Shear Zone: An Effective Anisotropic Model and Implications for the Transverse Ranges, California, Phil. Trans. R. Soc. Lond. A, 318, 285-347 (1986)

  Lyzenga, G. A., A. Raefsky, and B. H. Hager, Solving Finite-Element Problems on a Concurrent Processor, NASA Tech Briefs, 11, 75 (1987)

  Kroger, P. M., G. A. Lyzenga, K. S. Wallace, and J. M. Davidson, Tectonic Motion in the Western United States Inferred from Very Long Baseline Interferometry Measurements, 1980-1986, J. Geophys. Res., 92, 14151-14163 (1988)

  Parsons, I. D., J. F. Hall, G. A. Lyzenga, Relationships Between the Average Offset and the Stress Drop for Two- and Three-Dimensional Faults, Bull. Seismol. Soc. Am., 78, 931-945 (1988)

  Nour-Omid, A. Raefsky, and G. A. Lyzenga, Solving Finite Element Equations on Concurrent Processors, in Proceedings of the Symposium on Parallel Computations and their Impact on Mechanics, Boston, MA, December 13-18, 1987.

  Lyzenga, G. A., A. Raefsky, and B. Nour-Omid, Implementing Finite Element Software on Hypercube Machines, in Proceedings of the Third Conference on Hypercube Concurrent Computers and Applications, Pasadena, CA, January 19-20, 1988.

  Lyzenga, G. A., A. Raefsky, and S. G. Mulligan, Models of Recurrent Strike-Slip Earthquake Cycles and the State of Crustal Stress, J. Geophys. Res., 96, 21623-21640 (1991).

  Argus, D. F. and G. A. Lyzenga, Constraints on interseismic deformation at Japan trench from VLBI data, Geophys. Res. Lett.., 20, 611-614 (1993).

  Argus, D. F. and G. A. Lyzenga, Site Velocities Before and After the Loma Prieta and Gulf of Alaska Earthquakes from VLBI, Geophys. Res. Lett.. (in press 1993).

• Abstracts:

  Lyzenga, G.A., T.J. Ahrens, J.W. Shaner, and A.C. Mitchell, Shock Temperature Measurements for Minerals (abstract), Trans. Am. Geophys. U., 59, 374(1978)

  Lyzenga, G.A., and T.J. Ahrens, Multiple Shock Interactions for Attaining Large Isentropic Compressions in Molecular Fluids (abstract), Bull. Am. Phys. Soc., 23, 996(1978)

  Lyzenga, G.A., T.J. Ahrens, and A.C. Mitchell, Optical Measurement of Shock Temperatures in Dielectrics and Metals (abstract), Bull. Am. Phys. Soc., 24, 714(1979)

  Lyzenga, G.A. and T.C. Wallace, Numerical Synthesis of Surface Deformations Following the Mammoth Lakes Earthquake Sequence (abstract), Trans. Am. Geophys. U., 62, 401 (1981)

  Wallace, T.C., Lyzenga, G.A., and Given, J.W., "A Discrepancy Between Long- and Short-Period Fault Mechanisms of Earthquakes Near the Long Valley Caldera", (abstract), Seismological Society of America (1982)

  Slade, M.A., Lyzenga, G.A., Raefsky, A., Hartzell, S., and Scott, R., Finite Element Modeling of the 1979 Imperial Valley Earthquake (abstract), Trans. Am. Geophys. U., 63, 1119 (1982)

  Ivins, E.R., Lyzenga, G.A., Raefsky, A., and Saunders, R.S., Effective Anisotropy in the Deformation of Extensively Faulted Crustal Block (abstract), Trans. Am. Geophys. U., 63, 1119 (1982)

  Lyzenga, G.A. and K. S. Wallace, Southern California Strain Rates Derived from VLBI Observations (abstract), Trans. Am. Geophys. U., 64, 209 (1983)

  Slade, M.A., G. A. Lyzenga, A. Raefsky, B. H. Hager, Stress Field and Seismic Release in the Parkfield-Coalinga California Region (abstract), Trans. Am. Geophys. U., 64, 749 (1983).

  Lyzenga, G.A., K. S. Wallace, and J. L. Fanselow, Strain Changes from 1980 through 1982 on the Southern California VLBI Net: Results and Implications (abstract), Trans. Am. Geophys. U., 64, 678 (1983)

  Lyzenga, G.A., K. S. Wallace, J. L. Fanselow, and A. Raefsky, Constraints on the Tectonics of Southern and Central California Derived from Space Geodetic Observations (abstract), Trans. Am. Geophys. U., 65, 992 (1984)

  Slade, M. A., G. A. Lyzenga, and A. Raefsky, Constraints on Mantle Rheology from Post-Seismic Chandler Wobble Excitation (abstract), Trans. Am. Geophys. U., 65, 1002 (1984)

  Lyzenga, G. A., Space Geodetic Observations and the Tectonics of California (abstract), Trans. Am. Geophys. U., 66, 382 (1985)

  Slade, M. A., G. A. Lyzenga, and A. Raefsky, Variations in Earth's Polar Motion, Universal Time, and Gravity Field from Great Earthquakes in Subduction Zones (abstract), Trans. Am. Geophys. U., 66, 299 (1984)

  Spieth, M. A. , K. S. Wallace, and G. A. Lyzenga, Application of Empirical Strain Modeling to Crustal Dynamics VLBI Data in California (abstract), Trans. Am. Geophys. U., 66, 848 (1985)

  Golombek, M. P., and G. A. Lyzenga, Implications of VLBI Measurements on Pacific - North American Plate Motions in Southern California (abstract), Trans. Am. Geophys. U., 66, 849 (1985)

  Lyzenga, G. A. and A. Raefsky, Stress Accumulation and the Earthquake Cycle in Vertically Offset Transform Shear Zones (abstract), Trans. Am. Geophys. U., 66, 1066 (1985)

  Kroger, P. M., K. S. Wallace, and G. A. Lyzenga, Empirical Strain Modeling in California Using Space Geodetic Data (abstract), Trans. Am. Geophys. U., 67, 257 (1986)

  Slade, M. A., G. A. Lyzenga, and A. Raefsky, 1960 Chile: Release Mechanism for Long Period Seismic Moment (abstract), Trans. Am. Geophys. U., 67, 309 (1986)

  Lyzenga, G. A., A. Raefsky, and B. H. Hager, Time-Predictable Earthquake Recurrence at Subduction Zones ? (abstract), Trans. Am. Geophys. U., 67, 904 (1986)

  Kroger, P. M., K. S. Wallace, and G. A. Lyzenga, Empirical Strain Modeling in California Using Mobile VLBI Measurements (abstract), Trans. Am. Geophys. U., 67, 913 (1986)

  Kroger, P. M., G. A. Lyzenga, J. M. Davidson, and K. S. Wallace, Distribution of Relative Motion Along the Pacific-North American Plate Boundary Determined from Mobile VLBI Measurements (abstract), Trans. Am. Geophys. U., 68, 284 (1987)

  Lyzenga, G. A., A. Raefsky, and B. Nour-Omid, Finite Element Analysis on Large-Grain Parallel Computers (abstract), Third International Conference on Supercomputing, Boston, MA, May 15-20, 1988

  Raefsky, A., M. Gurnis, B. H. Hager, and G. A. Lyzenga, Finite Element Solution of Thermal Convection on a Hypercube Concurrent Computer (abstract), Trans. Am. Geophys. U., 69, 463 (1988)

  Lyzenga, G. A. and A. Raefsky, Propagation of Stress and Displacement in the Earthquake Cycle: Two-Dimensional Models (abstract), Trans. Am. Geophys. U., 69, 1432 (1988)

  A. Raefsky and Lyzenga, G. A., Parallel Processing Techniques for Finite Element Simulations of Tectonics: Hypercubes and Related Multiprocessors (abstract), Trans. Am. Geophys. U., 69, 1327 (1988)

  Lyzenga, G. A. and A. Raefsky, The State of Crustal Stress in the Presence of Recurrent Strike-Slip Earthquakes (abstract), Trans. Am. Geophys. U., 70, 1354 (1989)

  Kroger, P. M., C. De Mets, P. Lundgren, G. A. Lyzenga, and G. Blewitt, Post-seismic GPS Measurements of the Loma Prieta Earthquake (abstract), Trans. Am. Geophys. U., 71, 289 (1990)

  Lyzenga, G. A., The Relationship between Strike-slip Faulting and Crustal Stress: A Modeling Perspective, invited talk at Symposium on Strike Slip Faulting: Geological and Geophysical Perspectives, at 1991 Annual Meeting of the Geological Society of America, San Diego, CA, October 1991.

  Lyzenga, G. A. and D. F. Argus, Motion of the Kashima VLBI Site and Implications for Strain Accumulation at Japan Trench (abstract), Trans. Am. Geophys. U., 73, 122 (1992)

  Lyzenga, G. A., Undergraduate Research in Geodynamics Using GPS Geodetic Instrumentation (abstract), Trans. Am. Geophys. U., 74, 62 (1993)

  D. F. Argus and G. A. Lyzenga, Site Velocities Before and After the Loma Prieta and Gulf of Alaska Earthquakes from VLBI (abstract), Trans. Am.Geophys. U., 74, 191 (1993).

  Hager, B. H., G. A. Lyzenga, and A. Donnellan, Constraints on the Effective Viscosity of the Lower Crust in the Ventura Basin Region from Viscoelastic Models Constrained by GPS Velocities (abstract), Trans. Am.Geophys. U., 74, 59 (1993).