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Stephen Mackwell – Director Dr APPENDIX 1 Research Productivity of Staff Scientists January 2002–September 2003 Dr. Stephen Mackwell – Director Dr. Steve Clifford – Staff Scientist Dr. Robbie Herrick – Staff Scientist Dr. Walter Kiefer – Staff Scientist Dr. Laurel Kirkland – Postdoctoral Fellow Dr. Pat McGovern – Staff Scientist Dr. Julie Moses – Associate Staff Scientist Dr. Paul Schenk – Staff Scientist Dr. Tom Stepinski – Staff Scientist Dr. Alan Treiman – Senior Staff Scientist 36 STEPHEN MACKWELL Director RESEARCH FOCUS: PLANETARY MATERIALS — Laboratory-based research into the physical, chemical and mechanical properties of geological materials under conditions relevant to the mantle and crust of Earth and other terrestrial planets. Transport of fluid components in mantle and crustal rocks on the microscopic and macroscopic scales, and on the effects of such components on mechanical properties. RESEARCH ACTIVITY SINCE JANUARY 1, 2002 — Refereed Publications: Bolfan-Casanova, N., Mackwell S., Keppler H., and Rubie D. C. Pressure dependence of H solubility in magnesiowüstite up to 25 GPa: Implications for the storage of water in the Earth’s lower mantle, Geophys. Res. Letters, 29(10), 10.1029/2001GL014457, 2002. Jacobsen S. D., Reichmann H. J., Spetzle H. A., Mackwell S. J., Smyth J. R., Angel R. J., and McCammon C. A. Structure and elasticity of single-crystal (Mg,Fe)O and a new method of generating GHz-frequency shear waves for ultrasonics. J. Geophys. Res, 107, 1029/2001JB000490, 2002. Jacobsen S. D., Spetzler H. A., Reichmann H. J., Smyth J. R., Mackwell S. J., Angel R. J., and Bassett W. A. Gigahertz ultrasonic interferometry at high P and T: New tools for obtaining a thermodynamic equation of state. J. Phys: Condens. Matter, 14, 1–7, 2002. Gaillard F., Pichavant M., Mackwell S., Champallier R., Scaillet B., and McCammon C. Chemical transfer during redox exchanges between H2 and Fe-bearing silicate melts. Amer. Mineral., 88, 308–315, 2003. Heidelbach F., Stretton I. C., Langenhorst F., and Mackwell S. Fabric evolution during high shear-strain deformation of magnesiowüstite (Mg0.8Fe0.2O), J. Geophys. Res., 108, B3, 10.1029/2001JB001632, 2003. Mackwell S. and Paterson M. S. New developments in deformation studies: High-strain deformation, Rev. Mineral., 51, 1–19, 2003. Demouchy S. and Mackwell S. Water diffusion in synthetic iron-free forsterite, Phys. Chem. Minerals, 30, 486–494, 2003. Holzapfel C., Rubie D. C., Mackwell S., and Frost D. J. Effect of pressure on Fe-Mg interdiffusion in (FexMg1-x)O, ferropericlase, Phys. Earth Planet. Ints., 139, 21–34, 2003. 37 Couvy H., Frost D., Heidelbach F., Nyilas K., Ungar T., Mackwell S., and Cordier P. Shear deformation experiments of forsterite at 11 GPa - 1400C in the multianvil apparatus. Submitted to Eur. J. Mineral., August 2003. Talks and Published Abstracts: Neufeld K., Stretton I. C., and Mackwell S. J. Deformation and dehydration interactions in serpentinite. Presented at DMG Meeting, Hamburg, Germany. Beihelfte zum Eur. J. Mineral. 14, 117, 2002. Mackwell S. J., Bystricky M., and Heidelbach F. High strain deformation of clinopyroxene and olivine aggregates, and production of seismic anisotropy. Presented at 2002 Western Pacific AGU Meeting, Wellington, NZ. EOS Trans. AGU 83, SE31D-11, 2002. Demouchy S. and Mackwell S. Hydrogen diffusion in forsterite. Presented at 2002 Fall AGU Meeting, San Francisco. EOS Trans. AGU 83, T21C-1108, 2002. Heidelbach F., Stretton I. C., and Mackwell S. J. Mechanical behavior and fabric development in experimentally deformed magnesiowustite as a function of Fe-content. Presented at 2002 Fall AGU Meeting, San Francisco. EOS Trans. AGU 83, MR52A-0992, 2002. Jacobsen S. D., Spetzler H. A., Reichmann H. J., Mackwell S. J., and Smyth J. R. Effects of iron and pressure on the C11 elastic constant of (Mg,Fe)O using a new GHz-ultrasonic diamond cell with in-situ x-ray diffraction to 10 Gpa. Presented at 2002 Fall AGU Meeting, San Francisco. EOS Trans. AGU 83, MR62B-1074, 2002. Mackwell S. J. and Paterson M. S. (invited) New developments in deformation studies: High- strain deformation. Presented at MSA Short Course, San Francisco, December 2002. Mackwell S. J., Kohlstedt D. L., and Bystricky M. (invited) Rheological constraints on the plastic lithophere. Presented at 2002 Fall AGU Meeting, San Francisco. EOS Trans. AGU 83, MR51A-01, 2002. Mecklenburgh J., Heidelbach F., Mackwell S. J., and Seifert F. Rheology and microstructure of (Ca,Sr)TiO3 perovskite deformed in compression and torsion. Presented at 2002 Fall AGU Meeting, San Francisco. EOS Trans. AGU 83, MR52A-0993, 2002. Jackson J. M., Bass J. D., Sinogeikin S. V., Jacobsen S. D., Reichmann H. J., and Mackwell S. J. High-pressure Brillouin measurements on single-crystal ferropericlase: Implications for Earth’s lower mantle. Presented at 2003 Fall AGU Meeting, San Francisco. EOS Trans. AGU 84, 2003. 38 Seminars: Mackwell S. J. Experimental deformation of rocks to high strains with application to creep in the Earth. Presented at the University of Houston, Feb. 14, 2003. Mackwell S. J. Experimental deformation of rocks to high strains with application to creep in the Earth. Presented at University of New Mexico, March 11, 2003. Mackwell S. J. Experimental deformation of rocks to high strains with application to creep in the Earth. Presented at Arizona State University, April 16, 2003. Mackwell S. J. Experimental deformation of rocks to high strains with application to creep in the Earth. Presented at Rice University, Sept. 3, 2003. Funded Proposals: Current NASA, Office of Space Studies, LPI Contract, 2003–2007. National Science Foundation, Education, Skyteller Grant, 2002–2004. Upcoming National Science Foundation, Geochemistry and Petrology, Hydrous Defects and Diffusion in Mantle Minerals, 2004–2005. Other Activities: Editorial 1996 — Editorial Board, Physics and Chemistry of Minerals, Springer-Verlag, Berlin 2002–2004 — Editor-in-Chief, Geophysical Research Letters, AGU, Washington 2002 — Editorial Board, Tectonophysics, Elsevier, Amsterdam Committees and Funding Panels Forschungskollegium Physik des Erdkörpers e.V., Mitglieder, 2000–2003 Mineral and Rock Physics Committee, American Geophysical Union, 2000–2003 Review Panel, Alexander von Humboldt Foundation Research Fellowships Program, 2001– 2003 Review Panel for Schwerpunktprogramm “Internationales Kontinentales Bohrprogram (ICDP)”, Deutsche Forschungsgemeinschaft, 2001– Review Panel F for Planetary Geology and Geophysics, NASA, Washington, D.C. 2002–. Group Chief of Review Panel F for Planetary Geology and Geophysics, NASA, Washington, D.C., 2003– NASA Planetary Geology and Geophysics MOWG, 2003– Current Graduate Student Supervision Sylvie Demouchy – Water Diffusion in Upper Mantle Minerals, Ph.D., 2004. Hélène Couvy – High-Pressure Deformation of Mantle Minerals, Ph.D., 2004. 39 STEPHEN CLIFFORD Staff Scientist RESEARCH FOCUS: — Primary area of research has been the nature and evolution of the Martian hydrosphere. Work has included modeling: (i) the distribution, state, and dynamic behavior of H2O on and beneath the surface over geologic time; (ii) the thermal, seismic, hydrologic and climatic effects of impact cratering; (iii) glacial flow and polar evolution; and (iv) the geophysical detection of subsurface H2O. Refereed Publications: Leuschen C., Clifford S. M., and Gogineni P. Simulation of a Surface-Penetrating Radar for Mars Exploration. JGR-Planets, Special Section on the Geophysical Search for Subsurface Water on Mars, April 2003. Pellenbarg R. E., Max M. D., Clifford S. M. Methane and carbon dioxide hydrates on Mars: Potential origins, distribution, detection and implications for future in-situ resource utilization. JGR-Planets Special Section on the Geophysical Search for Subsurface Water on Mars, April 2003. McKeever S. W. S, Banerjee D., Blair M., Clifford S. M., Clowdsley M. S., Kim S. S., Leuschen M., Prather M., Reust D., Sears D.W.G., and Wilson J. W. Concepts and approaches to in-situ luminescence dating of martian sediments. Proceedings of the 10th International Conference on Luminescence and Electron Spin Resonance Dating, Reno. Doran P.T., Clifford S. M., Forman S. L., Nyquist L., Papanastassiou D.A., Stewart B.W., Sturchio N. C., Swindle T. D., Cerling T., Kargel J., McDonald G., Nishiizumi K., Poreda R., Rice J. W. and Tanaka K. Mars Chronology: Assessing techniques for quantifying surficial processes. Earth Science Reviews, in press. Stepinski T. F., Collier M. L., McGovern P. J., and Clifford S. M. Martian geomorphology from fractal analysis of drainage networks. JGR-Planets, in press. Stepinski T. F., Marinova M. M., McGovern P. J., Clifford S. M. Fractal analysis of drainage basins on Mars, Geophys. Res. Lett., 29(30)1–4. Abstracts: Clifford S. M., George J. A., Stoker C. R., and Briggs G. From global reconnaissance to sample return: A proposal for a post-2009 strategy to follow the water on Mars, Sixth International Conference on Mars. Clifford S. M. The Limits of Theoretical Modeling and Geomorphic Interpretation in Assessing the Present Distribution of Subsurface H2O on Mars, 34th Annual Lunar and Planetary Science Conference, March 17–21, 2003, League City, Texas, abstract #2118. 40 Collier M. L., Stepinski T. F., Clifford S. M., and McGovern P. J. Martian geomorphology from statistics of drainage networks. Lunar and Planetary Science Conference XXXIV, League City, Texas, abstract #1642, 2003. Clifford S. M. The response of martian atmospheric and crustal H2O to the emplacement and removal of depositional mantles. Vernadsky-Brown
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