Zhiming Lu, Ph.D.
Hydrology and Geochemistry Group
Earth and Environmental Sciences
Los Alamos National Laboratory
Los Alamos, NM 87545
Tel: (505) 665-2126
Fax: (505) 665-8737
Email: zhiming@lanl.gov
Homepage: http://www.ees.lanl.gov/staff/zhiming/
SPECIAL SKILLS
  • Highly skilled in mathematical modeling, statistical analysis, stochastic analysis, and numerical simulation of flow and contaminant transport in porous media

  • Familiarity in hydrological and hydro-chemical models such as, MODFLOW, PATH3D, MT3D, ZBSOFT, MMOC, MINTEQA2, PHREEQC, LEHGC

  • Extensive programming experience in C, C++, FORTRAN, Java, UNIX script, and PL/SQL

  • Management of SGI and IBM/RS6000 UNIX workstations
    • EDUCATION

    University of Arizona, Tucson, AZ

    PhD, major in Hydrology and Water Resources, minor in Computer Science, 2000

    Stanford University, Stanford, CA

    M.S. in Applied Earth Sciences, specializing in Geomathematics, 1995

    Zhijiang University, P. R. China

    M.S. in Geology, 1985

    Zhejiang University, P. R. China

    B.S. in Mathematics, major in Statistics, 1982
    PROFESSIONAL EXPERIENCE
  • 2002-Present Los Alamos National Laboratory Technical Staff Member, Earth and Environmental Sciences
  • Analytical solutions for unsaturated flow in layered, heterogeneous media (Lu and Zhang, 2004, AWR);
  • Analytical solutions for unsaturated flow in with root uptake (Yuan and Lu, 2005, VZJ);
  • Uncertainty quantification for flow in heterogeneous media using Karhunen-Loeve decomposition:
  • Methodology development Zhang and Lu, 2004a;
  • Comparison of efficiency and accuracy of KLME, MC, and ME methods (Lu and Zhang, SIAM, 2004 );
  • for unsaturated flow (Yang, Zhang, and Lu, 2004);
  • for conditional saturated hydraulic conductivity field ( Lu and Zhang, AWR, 2004);
  • for two-phase flow ( Chen, Zhang, Kelley, and Lu, WRR, 2004 );
  • for 3D transient saturate flow (Lu and Zhang, submitted to The 2005 SPE Reservoir Simulation Symposium );
  • Solving inverse problem using the Markov Chain Monte Carlo method (Lu, Higdon, and Zhang, 2004);
  • Analytical solutions to quantifying uncertainty for two-dimensional transient flow in heterogeneous media (Lu and Zhang, WRR, 2004)

  • 2000-2002 Los Alamos National Laboratory PostDoc, Earth and Environmental Sciences

  • Working on higher-order moments for saturated flow in heterogeneous porous media; solute transport in multimodal heterogeneous porous media; transport of reactive solute in randomly heterogeneous porous media; and Yucca Mountain project. Accomplished the following studies:

  • Stochastic simulation of flow and transport in Busted Butte project;
  • Upscaled flow and transport properties in heterogeneous unsaturated media (Khaleel, Yeh, and Lu, 2002);
  • Importance sampling technique in Monte Carlo simulations (Lu and Zhang, 2003c);
  • Solute transport in nonstationary flow in bounded heterogeneous unsaturated-saturated media; (Lu and Zhang, 2003a);
  • Well capture zones in heterogeneous media; (Lu and Zhang, 2003b; Zhang and Lu, 2004);
  • Stochastic model for flow in randomly heterogeneous media with multi-modal systems (Lu and Zhang, 2002b);
  • Stochastic model for flow in the integrated unsaturated/saturated heterogeneous media (Zhang and Lu, 2002; Lu and Zhang, 2002a).

  • 6/1995-2000 University of Arizona Research Associate, Department of Hydrology and Water Resources

  • Working on an NSF project entitled "A paradigm for the analysis of transient unsaturated flow and transport in randomly heterogeneous soils". Responsibilities include developing moment equations for nonlocal transient unsaturated flow with random boundary conditions and a random source term, solving these equations numerically using the finite element method, and comparing the corresponding Monte Carlo simulations.

  • Performed flow and transport simulation for defining effective hydraulic conductivity and transport properties for unsaturated zone at Hanford site, Washington. Click here to view the report.

  • Developed and implemented an algorithm for hydrological inverse problem using the maximum likelihood method, and compared against the iterative stochastic inverse approach.

  • Conducted uncertainty analysis on the analytical solution for one-dimensional unsaturated flow in heterogeneous soils with a variable infiltration rate.

  • Investigated the behavior of the variable Cadmium concentration in groundwater system in Pinal Creek, Arizona.

  • Simulated the evolution of the chloride plume at Borden landfill, Borden, Ontario, using a modified method of characteristics and a finite element model.

  • Managed a cluster of five UNIX IBM RS/6000 workstations and network.

  • 1992-1995 Stanford University, Stanford, CA Research Assistant, Department of Geological and Environmental Sciences.

  • Developed a three-dimensional computer simulation model for turbidity flows (TurbFlow).

  • Implemented a three-dimensional diffusion model with a graphic user-interface.

  • Calibrated SEDimentary basin SIMulation (SEDSIM) model, co-organized SEDSIM affiliates meeting, offered workshops on Introduction to Using SEDSIM and TURBFLOW, and provided technical support for SEDSIM users.

  • Managed SGI UNIX workstations and Macintoshes in Geomathematics Laboratory.

  • Consulted on developing a mathematical model for turbidity flows, Chevron Oil Company

  • 1985-1992 Zhejiang University, P. R. China

    Lecturer, Department of Earth Sciences

  • Participated in designing a computer expert system for tungsten deposits, responsibility including building the conceptual model, collecting field data, and calibrating the model.

  • Developed a statistical model for predicting concealed ore bodies, Shandong, P. R. China.

  • Supervised undergraduate theses.

    • AWARDS
  • 2001 Editors' Citation for Excellence in Scientific Refereeing for Water Resource Research, American Geophysics Union.
  • Bao Yu-Kong Scholarship for Chinese Students and Scholars Studying Abroad, 1991.
  • Excellent paper award on the Second National Conference on Microcomputer Applications, 1986.
    • PROFESSIONAL AFFILIATES
  • American Geophysics Union

  • American Water Resources Association

    •
    PROFESSIONAL ACTIVITIES
  • Session organizer, The Western Pacific Geophysics Meeting, 2006.
  • Session organizer, American Geophysical Union (AGU) Fall Meeting, 2002
  • Reviewer for the following journals and monograph series:
  • Water Resources Research
  • Journal of Contaminant Hydrology
  • SIAM Journal on Scientific Computing
  • Society of Petroleum Engineers Journal
  • American Geophysical Monograph Series
  • Environmental Modelling and Software
  • Mathematical Geology
  • Ground Water
  • Journal of Hydrology
  • Transport in Porous Media
  • Journal of Environmental Radioactivity
  • ASCE Journal of Hydrologic Engineering
  • Stochastic Environmental Research and Risk Assessment
  • Reviewing research proposals for the following organizations:
  • International Science and technology Center (ISTC)
  • LDRD/ER, Mathematics and Computational Sciences Committee, Los Alamos National Lab.

    • PUBLICATIONS

    NOTE: Most of my papers are available in PDF format, but some copyright limitations may apply to these PDF files.

    Book Chapters

    1. Lu, Z., D. Zhang, and Y. Chen, Information fusion using the Kalman Filter based on Karhunen-Leove decomposition, in Quantitative Information Fusion for Hydrological Sciences Cai and Yeh (eds), ISBN:978-3-540-75383-4, 218p, 2008.

    Peer-reviewed Journal Papers

    1. Chang, H, D. Zhang, and Lu, Z., History matching of facies distribution with the EnKF and level set parameterization, submitted to Journal of Computaitonal Physics, 2009

    2. Lu, Z., H. Deng, Z. Dai, A. Wolfsberg, and P. Reimus Quantifying uncertainty of effective transport parameters , submitted to Geophysical Research Letters, 2009

    3. Lu, Z., A. Wolfsberg, Z. Dai, and C. Zheng Characteristics and controlling factors of dispersion in bounded, randomly heterogeneous porous media, submitted to Water Resources Research, 2009

    4. Deng, H., Z. Dai,A. Wolfsberg, Lu, Z., M. Ye, and P. Reimus, Upscaling sorption coefficient for fractured rocks with multimodal reactive mineral facies, submitted to Water Resources Research, 2009

    5. Lu, Z., Andrew V. Wolfsberg, and Chuan Lu, Assessment of contaminant fate using importance sampling methods>, submitted to Water Resources Research, 2009.

    6. Robinson B. A.,Z. Lu, and D. Pasqualini, Simulating solute transport in porous media using model reduction techniques, submitted to Advances in Water Resources, 2009.

    7. Li, W., Z. Lu, and D. Zhang, Stochastic analysis of unsaturated flow with probabilistic collocation method,Water Resour. Res., 45, W08425, doi:10.1029/2008WR007530, 2009.

    8. Dai, Z., A. Wolfsberg, Z. Lu, amd H. Deng, Scale dependence of sorption coefficients for contaminant transport in saturated fractured rock,, Geophys. Res. Lett., 36, L01403, dod:10.1029/2008GL036516, 2009.

    9. Li, C., Z. Lu, T. Ma, and X. Zhu, A simple kriging method incorporating multiscale measurements in geochemical surveys, Journal of Geochemical Exploration, 101, 147-154, 2009.

    10. Chen, M., A. Keller, and Z. Lu,, Stochastic analysis of transient three-phase flow in heterogeneous porous media, Stochastic Environmental Research and Risk Assessment, DOI 10.1007/s00477-007-0198-y, 2007.

    11. Dai, Z., A. Wolfsberg, Lu, Z., and B. Ritzi, Representing aquifer architecture in macrodispersivity models with an analytical solution of the transition probability matrix, Geophysical Research Letter, 34, L20406, doi:10.1029/2007GL031608, 2007.

    12. Lu, Z., D. Zhang, and B. A. Robinson, Explicit analytical solutions for one-dimensional steady state flow in layered, heterogeneous unsaturated soils under random boundary conditions, Water Resource Research , 43, W09413, doi:10.1029/2005WR004795, 2007.

    13. Chen, M., Z. Lu, and G. A. Zyvoloski, Conditional simulations of transient water-oil flow in randomly heterogeneous porous media, Stochastic Environmental Research and Risk Assessment, DOI 10.1007/s00477-007-0178-2, 2007.

    14. Liu, G., Z. Lu, and D. Zhang, Stochastic uncertainty analysis for solute transport in randomly heterogeneous media us ing a Karhunen-Loeve based moment equation approach, Water Resour. Res., 43, W07427, doi: 10.1029/2006WR005193, 2007.

    15. Lu, Z., and D. Zhang, Stochastic simulations for flow in nonstationary randomly heterogeneous media using a Karhunen-Loeve based moment-equation approach, SIAM Multiscale Model. Simul., 6(1), 228-245, 2007.

    16. Dai, Z., A. Wolfsberg, Z. Lu, and P. Reimus, Upscaling matrix diffusion coefficients for multimodal heterogeneous fractured rocks, Geophysical Research Letters, 34, L07408, doi:10.1029/2007GL029332, 2007.

    17. Zhang, D., Z. Lu, , and Y. Chen, Dynamic reservoir data assimilation with an efficient, dimension-reduced Kalman filter , SPE Journal , 12(1), 10.2118/95277-PA, 108-117, 2007.

    18. Liu, G., D. Zhang, and Z. Lu Stochastic uncertainty analysis for unconfined flow systems, Water Resources Research, 42, W09412, doi:10.1029/2005WR004766, 2006.

    19. Lu, Z., and B. Robinson, Parameter structure identification using the level set method, movie1, movie2, Geophys. Res. Letts., 33, L06404, doi:10.1029/2005GL025541, 2006.

    20. Lu, Z., and D. Zhang, Accurate, efficient quantification of uncertainty for flow in heterogeneous reservoirs using the KLME approach, SPE Journal, 11(2), 10.2118/ 93452-PA, 239-247, 2006.

    21. Chen, M., A. A., Keller, D. Zhang, Z. Lu, and G. A. Zyvoloski, A stochastic analysis of transient two-phase flow in heterogeneous porous media, Water Resources Research, 42, W03425, doi:10.1029/2005WR004257, 2006.

    22. Yuan, F, and Z. Lu, Analytical solutions for vertical unsaturated flow in rooted soils with variable surface fluxes, Vadose Zone Journal, 4(4), 1210-1218, 2005.

    23. Robinson, B. A., G. Cole, J. M. Carey, M. Witkowski,C W. Gable, Z. Lu, and R. Gray, A vadose zone flow and transport model for Los Alamos Canyon, Los Alamos, New Mexico , Vadose Zone Journal, 4(3), 729-943, 2005.

    24. Lu, Z. and D. Zhang, Analytical solutions of statistical moments for transient flow in two-dimensional bounded, randomly heterogeneous media, Water Resources Research, 41, W01016, doi:10.1029/2004WR3389, 2005.

    25. Chen, M., D. Zhang, A.A. Keller, and Z. Lu, A stochastic analysis of steady state two-phase flow in heterogeneous media , Water Resources Research, 41, W01016, doi:10.1029/2004WR003412, 2005.

    26. Lu, Z. , and D. Zhang, A comparative study on quantifying uncertainty of flow in heterogeneous media using Monte Carlo simulations, the conventional and the KL-based moment-equation approaches, SIAM J. on Scientific Computing, 26(2), 558-577, 2004.

    27. Lu, Z. and D. Zhang, Conditional simulations of flow in randomly heterogeneous porous media using a KL-based moment-equation approach, Advances in Water Resources, 27(9), 859-874, 2004.

    28. Lu, Z. and D. Zhang, Analytical solutions to steady state unsaturated flow in layered, randomly heterogeneous soils via Kirchhoff transformation, Advances in Water Resources, 27(8), 775-784, 2004.

    29. Yang, J., D. Zhang, and Z. Lu, Stochastic analysis of saturated-unsaturated flow in heterogeneous media by combining Karhunen-Loeve expansion and perturbation method, J. of Hydrology, 294, 18-38, 2004.

    30. Zhang, D. and Lu, Z. , Stochastic delineation of well capture zones, Stochastic Envir. Res. and Risk Assessment, 18(1), 39-46, 2004.

    31. Zhang, D. and Lu, Z. , An efficient, higher-order perturbation approach for flow in randomly heterogeneous porous media via Karhunen-Loeve decomposition, Journal of Computational Physics, 194(2), 773-794, 2004.

    32. Lu, Z. , and D. Zhang, On importance sampling Monte Carlo approach to flow and transport in heterogeneous geological formations, 26(11), 1177-1188, Advances in Water Resour. , 2003.

    33. Tartakovsky, D. M., Z. Lu, A. Guadagnini, and A. Tartakovsky, Unsaturated flow in heterogeneous soils with spatially distributed uncertain hydraulic parameters, J. Hydrology, 275, 182-193, 2003.

    34. Lu, Z. , and D. Zhang, Stochastic studies of well capture zones in bounded heterogeneous media, Water Resour. Res., 39(4), 1100, doi:10.1029/2002WR001633, 2003.

    35. Lu, Z. , and D. Zhang, Solute spreading in nonstationary flows in bounded heterogeneous saturated-unsaturated media, Water Resour. Res., 39(3), 1049, doi:10.1029/2001WR000908,2003.

    36. Keating, E., V. Vesselinov, E. Kwicklis, and Z. Lu, Coupling large- and local-scale inverse models of the Espanola basin, Ground Water, 41, 200-211, 2003.

    37. Lu, Z. , and D. Zhang, On stochastic modeling of flow in multimodal heterogeneous formations, Water Resour. Res., 38(10), 1190, doi:10.1029/2001WR001026, 2002.

    38. Lu, Z. , and D. Zhang, Stochastic analysis of transient flow in heterogeneous variably saturated porous media: the van Genuchten-Mualem constitutive model, Vadose Zone Journal, 1, 137-149, 2002.

    39. Khaleel, R., T.-C. J. Yeh, and Z. Lu, Upscaled flow and transport properties for heterogeneous unsaturated media, Water Resour. Res., 38(5), 1053, 10.1029/ 2000WR000072, 2002.

    40. Lu, Z. , S. P. Neuman, A. Guadagnini, and D. M., Tartakovsky, Conditional moment analysis of steady state unsaturated flow in bounded, randomly heterogeneous soils, Water Resour. Res., 38(4), 1038, 10.1029/2001WR000278, 2002.

    41. Zhang, D., and Z. Lu, Stochastic analysis of flow in a heterogeneous unsaturated-saturated system, Water Resour. Res., 38(2), 1018, doi:10.1029/2001 WR000515, 2002.

    42. Tartakovsky, D. M., S. P. Neuman, and Z. Lu, Conditional stochastic averaging of steady state unsaturated flow by means of Kirchhoff transformation, Water Resour. Res., 35(3), 731-745, 1999.

    Proceeding Papers

    1. Lu, Z., B. Robinson, and C. Lu, Identification of geological structures using the level set method, MODFLOW and More Conference, 2006.

    2. Liu, G., Lu Z., and D. Zhang, MODFLOW-STO: Stochastic modeling of flow in saturated porous media using MODFLOW-2000, MODFLOW and More Conference, 2006

    3. Zhang, D., Z. Lu, and G. Liu, An efficient stochastic decomposition approach for large-scale subsurface flow problems, 16th International Conference on Computational Methods in Water Resources, 2006.

    4. Lu, Z., Parameter identification using the level set methods, the 16th International Conference on Computational Methods in Water Resources, 2006.

    5. Zhang, D., Lu, Z. , and Y. Chen, Dynamic reservoir data assimilation with an efficient, dimension-reduced Kalman filter , The 2005 SPE Annual Technical Conference and Exhibition , SPE95277, 2005.

    6. Lu, Z. , and D. Zhang, Accurate, efficient quantification of uncertainty for flow in heterogeneous reservoirs using the KLME approach, The 2005 SPE Reservoir Simulation Symposium , SPE93452, 2005.

    7. Lu, Z. , D. Higdon, and D. Zhang, A Markov Chain Monte Carlo method for the groundwater inverse problem, Proceedings of the 15th International Conference on Computational Methods in Water Resources, 1273-1283, 2004.

    8. Lu, Z. , and D. Zhang, An efficient approach for simulating saturated flow in randomly heterogeneous porous media conditioned on hydraulic conductivity measurements, Proceedings of MODFLOW and More 2003: Understanding through Modeling, 2003.

    9. Lu, Z. , and D. Zhang, Higher-order approximations for saturated flow in random heterogeneous media via Karhunen-Loeve decomposition, Proceedings of World Water & Environmental Resources Congress 2003 and Symposium of Probabilistic Approaches and Groundwater Modeling, 2003.

    10. Zhang, D., and Z. Lu, Monte Carlo simulations of solute transport in bimodal randomly heterogeneous porous media, in Groundwater Quality Modeling and management Under Uncertainty by S. Mishra (eds), doi 10.1061/4069, 101-111, 2003.

    11. Lu, Z. , and D. Zhang, Stochastic analysis of flow in heterogeneous, nonstationary unsaturated-saturated porous media, Proceedings of the 10th International High-Level Radioactive Waste Management Conference, American Nuclear Society, 13-19, 2003

    12. Zhang, D., and Z. Lu, Stochastic analysis of well capture zones in heterogeneous porous media, Proceedings of the 4th International Conference on Calibrating and Reliability in Groundwater Modeling, K. Kovar and Z. Hrkal, eds., 492-495, 2002.

    13. Lu, Z. , D. Zhang, and E. Keating, Applicability of unimodal stochastic approaches in simulating flow in bimodal heterogeneous formations, Bridging the Gap between Measurement and Modeling in Heterogeneous Media, Proceedings of the International Groundwater Symposium, A. N. Findikakis (ed.), 71-74, 2002.

    14. Khaleel, R., T.-C. J. Yeh, and Z. Lu, Effective hydraulic conductivity and macrodispersivity estimates for heterogeneous unsaturated media, Computation Methods in Water Resources, S. M. Hassanizadeh, R. J. Schotting, W. G. Gray, and G. F. Pinder, eds., 1211-1218, 2002.

    15. Keating, E., V. V. Vesselinov, E. Kwicklis, and Z. Lu, Coupling a large-scale basin model with a high resolution local model using a finite-element flow and transport solver (FEHM) and an automated parameter estimator (PEST), Proceedings of MODFLOW 2001 and Other Modeling Odysseys, 168-173, 2001.

    16. Lu, Z. , S. P., Neuman, A. Guadagnini, and D. M. Tartakovsky, Direct solution of unsaturated flow in randomly heterogeneous soils. Proceedings of the XIII International Conference on Computational Methods in Water Resources, L.R. Bentley, J.F. Sykes, C.A. Brebbia, W.G. Grey, and G.F. Pinder, eds., 785-792, 2000

    17. Neuman, S. P., D. M. Tartakovsky, C. Filippone, O. Amir, and Z. Lu, Deterministic prediction of unsaturated flow in randomly heterogeneous soils under uncertainty without upscaling, Proceedings of the International Workshop on t;Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media,1351-1365, 1999

    18. Neuman, S. P., D. M. Tartakovsky, Z. Lu, O. Amir, and A. Guadagnini, Preservation of constitutive nonlinearities in moment analyses of unsaturated flow through randomly heterogeneous soils, SIAM MiniSymposium, 1999.

    Published Abstracts/Presentations

    1. Lu, Z., and B. Robinson, Parameter Identification Using Level Set Methods, EOS. Trans. AGU, 87(52), Fall Meeting Suppl., Abstract H42A-03, 2006.

    2. Lu, Z., and B. A., Robinson (2006), Uncertainty quantification for flow and transport using model reduction techniques, Eos Trans. AGU, 87(36), West. Pac. Geophys. Meet. Suppl., Abstract H12A-06.

    3. Robinson, B. A., and Z. Lu (2006), A radionuclide transport model for the unsaturated zone at Yucca Mountain, Eos Trans. AGU, 87(36), West. Pac. Geophys. Meet. Suppl., Abstract H11E-04.

    4. Chen, M, A Keller, D Zhang, Z. Lu, G Zyvoloski , A stochastic analysis of transient two-phase flow in heterogeneous porous media, EOS Trans, AGU, 86(52), Fall Meet. Suppl., Abstract H11D-1284, 2005.

    5. Zhang,D., Z. Lu, and Y. Chen, Efficient uncertainty quantification and model updating of subsurface flow models , EOS Trans, AGU, 86(52), Fall Meet. Suppl., Abstract H11E-05, 2005.

    6. Liu, G., D. Zhang, and Z. Lu, MODFLOW_STO: Stochastic modeling of flow in saturated porous media using MODFLOW-2000, EOS Trans., AGU, 86(52), Fall Meet. Suppl., Abstract, 2005.

    7. Lu, Z., and D. Zhang, An efficient data assimilation technique using Karhunen-Loeve Kalman filter, EOS. Trans. AGU, 85(47), Fall Meeting Suppl., Abstract SF11A-07, 2004.

    8. Robinson, B., Z. Lu, D. Higdon, and B. Newman, Characterization of unsaturated soil properties using a Markov Chain Monte Carlo approach, EOS. Trans. AGU, 85(47), Fall Meeting Suppl., H11B-0295, 2004.

    9. Zyvoloski, G., E. Keating, B. Robinson, and Z. Lu , Simulating contaminant transport in Heterogeneous media using the dual porosity method, EOS. Trans. AGU, 85(47), Fall Meeting Suppl., H33F-0538, 2004

    10. Chen, M. D. Zhang, A. Keller, and Z. Lu, Stochastic analysis of water-oil phase flow in heterogeneous meida by combining Karhunen-Loeve expansion and perturbation method, EOS. Trans. AGU, 85(47), Fall Meeting Suppl., H43H-07, 2004

    11. Lu, Z. and D. Zhang, Evaluation of higher-order moments for flow in randomly heterogeneous porous media via Karhunen-Loeve decomposition, EOS Trans. AGU, 83, Fall Meet. Auppl. Abstract H61E-04, 2002.

    12. Lu, Z. and D. Zhang, A general stochastic model for solute transport in bounded heterogeneous unsaturated-saturated media, EOS Trans. AGU, 82(47), Fall Meet. Auppl. Abstract H22E-0378, 2001.

    13. Neuman, S. P., A. Hernandez, J. Carrera, A. Guadagnini, and Z. Lu, Accounting for predictive errors due to combined effects of stochastic averaging and regression, EOS Trans. AGU, 81(48), Fall Meet. Auppl. Abstract H11G-08, 2000.

    14. Lu, Z. , A. Guadagnini, D. M. Tartakovsky, and S. P. Neuman, Nonlocal finite element analysis of conditional steady state unsaturated flow in bounded randomly heterogeneous soils using Kirchhoff transformation, EOS Trans. AGU, 79(45), Fall Meet. Auppl. Abstract H41G-05, 1998. Click here to view the slides.

    15. Neuman, S. P., D. M. Tartakovsky, Z. Lu, O. Amir, and A. Guadagnini, Preservation of constitutive nonlinearities in moment analyses of unsaturated flow through randomly heterogeneous soils, SIAM MiniSymposium, Los Angles, March 1999.

    16. Tartakovsky, D. M., S. P. Neuman, and Z. Lu, Stochastic averaging of steady state unsaturated flow by means of Kirchhoff Transformation, EOS Trans. AGU, 78(46), Fall Meet. Auppl. Abstract H41C-2, 1997.

    Technical Reports

    1. Lu, Z., and B. Robinson, Effect of grid resolution on simulation of perched water zones, a report submitted to LANL Groundwater Protection Program for FY06 Vadose Zone Project deliverable, 2006.

    2. Lu, Z., and B. Robinson, Infiltration estimates from borehole water content data using the Markov Chain Monte Carlo method, a report submitted to LANL Groundwater Protection Program for FY05 Vadose Zone Project deliverable, 2005.

    3. Keating, E., B. Robinson, K. Birdsell, Z. Lu, and V. Vesselinov, Hydrological Synthesis Report to LANL Groundwater Protection Program, 4: Numerical models, 2005.

    4. Keating, E., V. V. Vesselinov, Z. Lu, and E. Kwicklis, Annual Report on Regional Aquifer Modeling and Data Analysis, Technical Report of Los Alamos National Laboratory, LA-UR-02-484, 2001.

    5. Lu, Z. , D. Zhang, and E. Keating, Applicability of unimodal stochastic approaches in simulating flow in bimodal heterogeneous formations, Technical Report of Los Alamos National Laboratory, LA-UR-01-4747, 2001

    6. Keating, E. H., E. Kwicklis, V. V. Vesselinov, A. M Idar, Z. Lu, G. A. Zyvoloski, and M. S. Witkowski, A Regional Flow and Transport Model for Groundwater at Loa Alamos National Laboratory, A progress report submitted to the Hydrologic Characterization Program. LA-UR-01-2199, 2000.

    7. Lu, Z. , S. P. Neuman, A. Gaudagnini, and D. M. Tartakovsky, Conditional moment analysis of steady state unsaturated flow in bounded, randomly heterogeneous soils based on Kirchhoff transformation: 1, Recursive finite element formulation, Technical Report of Los Alamos National Laboratory, LA-UR-00-5199, 2000.

    8. Robinson, B., E. Keating, B. Newman, K. Birdsell, B. Carey, M. Witkowski, Z. Lu, A. Idar, M. Haagenstad, G. Zyvoloski, V. Vesselinov, Process-Level and System Models of Groundwater Flow and Transport Beneath the Pajarito Plateau: Migration of High Explosives from Technical Area 16. A report submitted to ADLSSR office, 2000.

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