Professional objective
To develop a multidisciplinary, advanced teaching and research program that strongly integrates (1) the coupled chemical, physical, and biological processes in the hydrosphere and atmosphere, (2) high-performance analytical and computational techniques on parallel and distributed computing systems (3) knowledge bases for environmental and economical risk-based decision-making. My current research interests are theoretical and computational aspects of (1) subsurface, multispecies solute and microbial transport at multiple scales, (2) mechanistic-based watershed modeling for evaluation of ecosystem conditions, (3) physicochemical models for regional and global climate change studies, and (4) environmental and economical risk-based decision-making.
Education
Ph. D., 1989-1992, Civil Engineering, The Pennsylvania
State University, GPA 3.83.
M.S., 1988-1989, Civil Engineering, The University
of California at Berkeley, GPA 3.90.
B.S., 1981-1985, Civil Engineering, National Chiao-Tung
University, Taiwan.
Experiences
Staff Research Scientist, Oak Ridge National Laboratory (Aug., 1995 to present), Computer Science and Mathematics Division (Oct. 1999 to present) and Center for Computational Sciences (Aug, 1995 - Oct. 1999).
Research Topics:
Mechanistic-based watershed modeling for evaluation of ecosystem conditions. See http://www.csm.ornl.gov/~g4p/WASH123D.html.
Massively parallel subsurface hydrogeochemistry modeling at waste disposal sites. See http://www.csm.ornl.gov/~g4p/yeh96.html.
Distributed Shared-Memory Programming on Intel Paragon, a Workshop, Oak Ridge National Laboratory, Oak Ridge, TN, 1997.
Parallel Programming on the IBM SP2, a Workshop, Joint Institute for Computational Science, University of Tennessee, Knoxville, TN, 1996.
Genetic Algorithms and Neural Networks, a Short Course, University of Tennessee Space Institute, Tullahoma, TN, 1995.
Postdoctoral Researcher, Environmental Science
Division, Oak Ridge National Laboratory, Tennessee (Oct. 1992 to Aug. 1995).
Research Topics:
Parallel Programming with PVM, a Workshop, Joint Institute for Computational Science, University of Tennessee, Knoxville, TN, 1994.
Parallel Programming on Intel Paragon, a Workshop, Oak Ridge National Laboratory, Oak Ridge, TN, 1994.
Research Assistant, Civil and Environmental Engineering,
Pennsylvania State University (Aug. 1989 to Aug. 1992).
Research Topics:
Research Topics:
Research Topics:
Research Topics:
Review 5-10 papers and proposals per year for Journal of Hydrology, Water Resources Research, ASCE journals, and the Small Business Innovation Research Program, USDA.
Influence of Coupled Biohydrogeochemical Processes on the Fate and Transport of Industrial Mixed Waste Plumes in Structured Media, (co-principal investigator) US DOE, Environmental Technology Partnership Initiative, 1996-2000, $475,000/yr (total).
Microbiological Controls of Chelated Radionuclides in Multiscale Structured Media, (co- principal investigator), US DOE Natural and Accelerated Bioremediation Program, 1997-2000, $450,000/yr (total).
Mechanistic-based Watershed Modeling for Evaluation of Ecosystem Conditions, (collaborator), US EPA Computing, Information, and Communications Research and Development Program, Computing Technology for Ecosystem Modeling, 2000-2002, $300,000/yr (total), ORNL $60,000/yr.
Bear Creek Valley Field Research Site for DOE's Natural and Accelerated Bioremediation Research Program , (scientists team member), US DOE Natural and Accelerated Bioremediation Research Program, 2000, $100,000, 2001, $150,000.
Oak Ridge Y12 East End DNAPL Bioremediation in Fractured Bedrock (modeling team member), US DOE Innovative Treatment Remediation Demonstration (ITRD) Program, 2000, $15,000, 2001, ~$50,000.
Ph.D. Dissertation
Multi-Region Flow and Transport Modeling in Subsurface Media. The Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park.
Refereed Journals and Book Chapters
Gwo, J. P. and R. O'Brien, 1999. On the search of preferential flowpaths in structured porous media using a simple genetic algorithm, submitted to Water Resour. Res., Oct. 1999.
Mahinthakumar, G., Gwo, J. P., and Moline G. R., 1999. Subsurface biological activity zone detection using genetic algorithms, ASCE J. of Environ. Eng. 125(2): 1103-1112.
Jardine, P. M., G. V. Wilson, R. J. Luxmoore, and J. P. Gwo, 1999. Conceptual model of vadose-zone transport in fractured weathered shales, in P. A. Hsieh (ed.) Conceputal Models of Flow and Transport in the Fractured Vadose Zone, Natural Research Council (in review).
Jardine, P. M., W. E. Sanford, J. P. Gwo, O. C. Reedy, D. S. Hicks, J. S. Riggs, and W. B. Bailey. 1999. Quantifying diffusive mass transfer in fractured shale bedrock using multiple tracers. Water Resour. Res. 35(7): 2015-2030.
Gwo, J. P., G. V. Wilson, P. M. Jardine, and E. F. D'Azevedo, 1999. Modeling subsurface contaminant reactions and transport at the watershed scale. In Corwin, D. L., K. Loague, and T. R. Ellsworth (eds.) Assessment of Non-Point Source Pollution in the Vadose Zone, American Geophysical Union, Washington D. C., p31-43.
Gwo, J. P., R. O'Brien, and P. M. Jardine. 1998. Mass transfer in structured porous media: Embedding mesoscale structure and microscale hydrodynamics in a two-region model. J. Hydrol. 208: 204-222.
Wilson, G.V., J.P. Gwo, P.M. Jardine, and R.J. Luxmoore. 1998. Hydraulic and Physical Nonequilibrium Effects on Multiregion Flow and Transport. In H.M. Selim and L. Ma (eds.), Physical Nonequilibrium in Soils: Modeling and Application, p.37-61, Ann Arbor Press, Inc., Michigan.
Jardine, P.M., R. O'Brien, G.V. Wilson, and J.P. Gwo. 1998. Experimental Techniques for Confirming and Quantifying Physical Nonequilibrium Processes in Soils. In H.M. Selim and L. Ma (eds.), Physical Nonequilibrium in Soils: Modeling and Application, p.243-271. Ann Arbor Press, Inc., Michigan.
Toran L., J. P. Gwo, G. Mahinthakumar, E. D'Azevedo, and C. Romine. 1997. High-performance computing in groundwater modeling, ORNL Review 30 (3 & 4): 94-99.
Gwo, J. P., P. M. Jardine, G. V. Wilson, and G. T. Yeh. 1996. Using a multiregion model to study the effects of advective and diffusive mass transfer on local physical nonequilibrium and solute mobility in a structured soil. Water Resour. Res. 32: 561-570.
Gwo, J. P., L. E. Toran, M. D. Morris, and G. V. Wilson. 1996. Subsurface stormflow modeling with sensitivity analysis using a Latin-hypercube sampling technique. Ground Water 34: 811-818.
James, B. R., J. P. Gwo, and L. E. Toran. 1996. Risk-cost decision framework for aquifer remediation design. J. Water Resour. Plan. and Manag. 122: 414-420.
Gwo, J. P., P. M. Jardine, G. V. Wilson, and G. T. Yeh. 1995. A multiple-pore-region concept to modeling mass transfer in subsurface media. J. Hydrol. 164: 217-237.
Gwo, J. P., P. M. Jardine, G. V. Wilson, and G. T. Yeh. 1994. Modeling small-scale physical non-equilibrium and large-scale preferential fluid and solute transport in a structured soil. In A. Peters, G. Wittum, B. Herrling, U. Meissner, C. A. Brebbia, W. G. Gray, and G. F. Pinder (eds.), Computational Methods in Water Resources X. p.465-472.
Wilson, G. V., P. M. Jardine, R. J. Luxmoore, and J. P. Gwo, Multi-region flow and transport in unsaturated soil. (In) S. G. Pandalai (ed.), Trends in Hydrology. Council of Scientific Information. Trvivandrum, India. p.279-290. 1994.
Wilson G. V., P. M. Jardine, and J. P. Gwo. 1992. Modeling the hydraulic properties of a multiregion soil. Soil Sci. Soc. Am. J. 56: 1731-1737.
Yeh, G. T. and J. P. Gwo. 1990. A Lagrangian-Eulerian
approach to modeling multicomponent reactive transport. In G. Gambolati,
A. Rinaldo, C. A. Brebbia, W. G. Gray, and G. F. Pinder (eds.), Computational
Methods in Subsurface Hydrology, VIII International Conf. on Computational
Methods in Water Resources. pp. 419-427.
Mahinthakumar, G., and J. P. Gwo, 1999. Task parallel and data parallel computing for subsurface inverse characterization problems. In Tentner, A. (ed.), High Performance Computing 1999: Grand Challenges in Computer Simulation, p.217-223.
Gwo, J. P., and G. T. Yeh. 1997. Application of a parallel 3-dimensional hydrogeochemistry HPF code to a proposed waste disposal site at the Oak Ridge National Laboratory. In Tentner, A. (ed.), High Performance Computing 1997: Grand Challenges in Computer Simulation, p.128-133.
D'Azevedo, E. F., and J. P. Gwo. 1997. Parallelization of a multiregion flow and transport code using software emulated global shared memory and high performance FORTRAN. In Tentner, A. (ed.), High Performance Computing 1997: Grand Challenges in Computer Simulation, p.21-26.
Gwo, J. P., G. T. Yeh, and G. V. Wilson, 1990, A multi-region approach to modeling subsurface flow. In Proceeding International Conference and Workshop: Transport and Mass Exchange Processes in Sand and Gravel Aquifers: Field and Modeling Studies, Ottawa, Canada, Oct., 1990. p.575-594.
Yeh, H. D. and J. P. Gwo. 1988. The establishment
of environmental safety assessment model on sea-dumping of low-level radioactive
wastes in the northwest pacific ocean. In Conference Symposium, Environmental
Protection and Ecological Conservation (in Chinese), p.705-725, April,
1988, Taipei, Taiwan.
Gwo, J. P., P. M. Jardine, G. T. Yeh, and G. V. Wilson. 1995. MURT User's Guide: A Hybrid Lagrangian-Eulerian Finite Element Model Of Multiple-Pore-Region Solute Transport Through Subsurface Media. ORNL/GWPO-015, Oak Ridge National Laboratory.
James, B. R., J. P. Gwo, and L. E. Toran, 1995. Using Modeling to Improve Remediation Design with Sensitivity Analysis and Data Worth. ORNL/GWPO-017, Oak Ridge National Laboratory.
Gwo, J. P., L. E. Toran, M. D. Morris, and G. V. Wilson. 1994. Subsurface Stormflow Modeling with Sensitivity Analysis Using a Latin-Hypercube Sampling Technique, ORNL/TM-12825, Oak Ridge National Laboratory.
Gwo, J. P., P. M. Jardine, G. T. Yeh, and G. V. Wilson. 1994. MURF User's Guide: A Finite Element Model of Multiple-Pore-Region Flow Through Variably Saturated Subsurface Media. ORNL/GWPO-011, Oak Ridge National Laboratory.
Yeh, G. T., J. R. Cheng, J. P. Gwo, H. C. Lin, D.
R. Richard, and W. D. Martin. 1994. 3DSALT: A 3-Dimensional Finite Element
Model of Density-Dependent Flow and Transport Through Saturated-Unsaturated
Media. US Army Corps of Engineers, Waterways Experiment Station, Instruction
Report HL-94-1.
Gwo, J. P., and P. M. Jardine, Complexity in Hydrobiogeochemistry: A Multidisciplinary Integrative Approach, A minisymposium, the Fifth SIAM Conference on Mathematical and Computational Issues in the Geosciences, March 24-27, 1999, San Antonio, Texas (http://hbgc.esd.ornl.gov/pubs/siam99/).
Jardine, P. M., T. L. Mehlhorn, I. L. Larsen, S. C. Brooks, J. P. Gwo, G. V. Wilson, and W. E. Sanford, 1999. Basic research strategies for resolving remediation needs in contaminated fractured subsurface media. In symposium Dynamics of Fluids in Fracture Rocks: Concept and Recent Advances, Lawrence Berkeley Laboratory, Feb. 10-12, 1999.
Jardine, P. M., S. C. Brooks, W. E. Sanford, T. L. Mehlhorn, I. L. Larsen, and J. P. Gwo. 1998. Multiple tracer techniques for quantifying contaminant mass transfer processes in fractured shale bedrock. AGU 1998 Spring Meeting, Boston, MA, May 26-29, 1998.
Jardine, P. M., S. C. Brooks, T. L. Mehlhorn, W. E. Sanford, and J. P. Gwo, 1998. Quantifying diffusive mass transfer processes in fractured shale bedrock using multiple tracers. Groundwater Tracing Conference, Richmond, Kentucky, June 5-6, 1998.
Gwo, J. P., G. V. Wilson, P. M. Jardine, and E. F. D'Azevedo. 1997. Modeling Subsurface contaminant reactions and transport at the watershed scale. AGU Chapman Conference, Riverside, CA, Oct. 20-24, 1997.
Gwo, J. P., R. O'Brien, and P. M. Jardine. 1997. Characterization of mesoscale mass transfer processes in an undisturbed soil column using a two-region model. AGU 1997 Fall Meeting, San Francisco, Dec. 8-12, 1997.
Gwo, J. P. and G. T. Yeh. 1996. A parallel 3-dimensional HYDROGEOCHEM and an application to a proposed waste disposal site at the Oak Ridge National Laboratory. EOS, Transactions, American Geophysical Union, Vol. 77, No. 46, p.F203.
Jardine, P. M., W. E. Sanford, O. C. Reedy, J. P. Gwo, and D. S. Hicks. 1996. Quantifying contaminant mass transfer processes in fractured shale bedrock. 41st annual Midwest Groundwater Conference. Sept. 29 - Oct. 1. Lexington, KY.
Gwo, J. P., P. M. Jardine, G. V. Wilson, and G. T. Yeh, 1995. Local advective-diffusive mass transfer and preferential flow and matrix diffusion non-equilibria. ASA, CSSA, SSSA Annual Meeting, St. Louis, MO, Oct. 29-Nov. 3, 1995.
Gwo, J. P., G. V. Wilson, L. E. Toran, and B. R. James, 1995. A risk-based study of groundwater and waste discharge at a DOE waste disposal site. ASA, CSSA, SSSA Annual Meeting, St. Louis, MO, Oct. 29-Nov. 3, 1995.
Gwo, J. P., Jardine, P.M., W. E. Sanford, and O. C. Reedy. 1995. Multicomponent tracer injection at a DOE waste disposal site with fractured porous media: II. Application of a multiregion flow and transport model. American Geophysical Union. Dec. 11 - 15. San Francisco, CA.
Jardine, P. M., O. C. Reedy, R. O'Brien, W. E. Sanford, D. S. Hicks, and J. P. Gwo, 1995. Quantifying contaminant mass transfer processes at laboratory and field scales, V. M. Goldschmidt Conference, May 24-26, 1995. Pennsylvania State University, University Park.
Jardine, P. M., W. E. Sanford, O. C. Reedy, D. S. Hicks, and J. P. Gwo, 1995. Field-scale contaminant mass transfer processes in fractured shales. ASA, CSSA, SSSA Annual Meeting, St. Louis, MO, Oct. 29-Nov. 3, 1995.
Wilson, G. V., P.M. Jardine, and J. P. Gwo. 1995. Field-scale multi-region transport through a saprolitic vadose zone. Geologic Society of America. April 6-7, Knoxville, Tennessee.
Jardine, P.M., W. E. Sanford, O. C. Reedy, and J. P. Gwo. 1995. Multicomponent tracer injection at a DOE waste disposal site with fractured porous media: I. Experimental Findings. American Geophysical Union. Dec. 11 - 15. San Francisco, CA.
Gwo, J. P. and L. E. Toran. 1994. A Latin-hypercube sensitivity analysis on hillslope subsurface stormflow: implications for monitoring and remediation of waste disposal sites. EOS, Transactions, American Geophysical Union Vol. 75, No. 16, pp. 277.
Toran, L. E., G. Moline, J. P. Gwo, M. Yambert. 1994. Understanding groundwater flow at a low-level radioactive waste site using a supercomputer. EOS, Transactions, American Geophysical Union, Vol. 75, No. 16, pp. 164-165.
Wilson, G. V., J. P. Gwo, P. M. Jardine, and G. T. Yeh. 1994. Field-scale mass transport and the effect of local-scale non-equilibrium. EOS, Transactions, American Geophysical Union Vol. 75, No. 16, pp. 287.
Gwo, J. P., P. M. Jardine, G. V. Wilson, and G. T. Yeh. 1993. Advective and diffusive mass transfer in a structured soil during fluid and solute transport: a sensitivity analysis. EOS, Transactions, American Geophysical Union, Vol. 74, No. 43, pp. 236.
Gwo, J. P., L. E. Toran, G. V. Wilson, and M. D. Morris, 1993. Hillslope subsurface storm flow modeling with sensitivity analysis and risk assessment. Proceedings of Extended Abstracts, Responses to Changing Multiple-Use Demands: New Directions for Water Resources Planning and Management. pp. 261-265. American Water Resources Association 1994 Annual Spring Symposium, Nashville.
Gwo, J. P., P. M. Jardine, G. T. Yeh, and G. V. Wilson. 1993. Modeling subsurface flow and transport in the Melton Branch Watershed using multiple pore region models. TIE poster, pp. 27. The Fourth National Technology Information Exchange (TIE) Workshop. May 11-13, 1993, Knoxville.
Toran, L. E., O. R. West, and J. P. Gwo. 1993. Supercomputer model of an Oak Ridge National Laboratory waste area. TIE poster, pp. 10. The Fourth National Technology Information Exchange (TIE) Workshop. May 11-13, 1993, Knoxville.
D'Azevedo E. F., C. H. Romine, L. E. Toran, O. R. West, and J. P. Gwo. 1993. High performance computing for environmental modeling and remediation. Supercomputing 93, Portland, Oregon, Nov. 15-19.
Gwo J. P., G. T. Yeh, and P. M. Jardine. 1992. Multi-region modeling of soil column tracer injections. EOS, Transactions, American Geophysical Union, Vol. 73, No. 43, pp. 156.
Gwo, J. P., G. T. Yeh, G. V. Wilson, and P. M. Jardine. 1991. Modeling a soil column infiltration problem using a multi-region subsurface flow and transport approach. EOS, Transaction, American Geophysical Union. Vol. 72, No. 44, pp. 146.
Gwo, J. P., G. T. Yeh, P. M. Jardine, and G. V. Wilson. 1991. A multi-region approach to modeling subsurface transport. EOS, Transaction, American Geophysical Union, Vol. 72, No. 17, pp. 135.
Wilson, G. V., P. M. Jardine, J. D. O'Dell, and J. P. Gwo. 1991. Field-scale experiments on 1-, 2-, and 3-dimensional multi-region transport of tracers at Melton branch. 1991 Watershed Research Symposium, 21-23, March, 1991. Environmental Science Division, Oak Ridge National Laboratory.
Wilson, G. V., J. P. Gwo, G. T. Yeh, and P. M. Jardine. 1991. Modeling subsurface flow with a multi-region approach. EOS, Transaction, American Geophysical Union. Vol. 72, No. 17, pp. 112.
Jardine, P. M., G. V. Wilson, G. T. Yeh, R. J. Luxmoore, J. D. O'Dell, and J. P. Gwo. 1991. Experimental and theoretical aspects of subsurface contaminant transport at multiple scales. I&EC Special Symposium American Chemical Society, Atlanta, GA, Oct. 1-3, pp. 336-339.
Wilson, G. V., P. M. Jardine, G. T. Yeh, J. D. O'Dell, and J. P. Gwo. 1991. Multi-region flow and transport under field-scale conditions: conceptualization and experimentation. 1991 Agronomy Abstracts, pp. 235.
Gwo, J. P. and G. T. Yeh. 1992. MURF: A Finite Element Two-Dimensional Multi-Region Subsurface Flow Model for Slightly Compressible Saturated-Unsaturated Media. The Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park. Prepared for Oak Ridge National Laboratory.
Gwo, J. P. and G. T. Yeh. 1992. MURT: A Hybrid Lagrangian-Eulerian Finite Element Two-Dimensional Multi-Region Subsurface Solute Transport Model for Slightly Compressible Saturated-Unsaturated Media. The Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park. Prepared for Oak Ridge National Laboratory.
Gwo, J. P. and G. T. Yeh. 1992. 3DMURF: A Finite Element Three-Dimensional Multi-Region Subsurface Flow Model for Slightly Compressible Saturated-Unsaturated Media. The Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park. Prepared for Oak Ridge National Laboratory.
Gwo, J. P. and G. T. Yeh. 1992. 3DMURT: A Hybrid Lagrangian-Eulerian Finite Element Three-Dimensional Multi-Region Subsurface Solute Transport Model for Slightly Compressible Saturated-Unsaturated Media. The Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park. Prepared for Oak Ridge National Laboratory.
Gwo, J. P. 1989. The Determination Of Instream Flows Requirements For Anadromous Salmonids. Department of Civil Engineering, University of California, Berkeley.
Gwo, J. P. 1989. Groundwater Dynamics - Non-Parallel
Channels. Department of Civil Engineering, University of California,
Berkeley.
FORTRAN, C, C++, Java, Pascal, Microsoft Visual Basic
PVM (Parallel Virtual Machine) and MPI (Message Passing Interface)
Parallel Programming Languages (HPF, FORTRAN and C)
Numerical Methods
Finite Element, Finite Difference, Integrated Finite Difference, Finite Volume
HBGC123D: A multidimensional, mutispecies high-performance hydrobiogeochemistry model (http://hbgc.esd.ornl.gov).
PHGC3D: A parallel 3-dimensional finite element hydrogeochemistry model (http://www.csm.ornl.gov/~g4p/HPC_97.html).
MURF: A finite element two-dimensional multiregion subsurface flow model for slightly compressible saturated-unsaturated media.
MURT: A hybrid Lagrangian-Eulerian finite element two-dimensional multiregion subsurface solute transport model for slightly compressible saturated-unsaturated media.
3DMURF: A finite element three-dimensional multiregion subsurface flow model for slightly compressible saturated-unsaturated media (http://www.csm.ornl.gov/~g4p/hpc97_2/hpc97_2.html).
3DMURT: A hybrid Lagrangian-Eulerian finite element three-dimensional multiregion subsurface solute transport model for slightly compressible saturated-unsaturated media (http://www.csm.ornl.gov/~g4p/hpc97_2/hpc97_2.html).
3DSALT: A 3-dimensional finite element model of density-dependent flow and transport through saturated-unsaturated media.
PNG512: A 2-dimensional finite volume model of multiphase fluid flow in porous media.
Phi Tau Phi Scholar, Phi Tau Phi Scholars Association,
National Chiao-Tung University, 1985.
Award in Online Communication, Society for Technical Communication,
East Tennessee Chapter, 2000.
Professional Associations
American Geophysical Union, 1991 -
The Society for Computer Simulation International,
1997 -
Hobbies and Sports
Photography, Chinese calligraphy, Poetry, Painting, Hiking and bird watching, Bicycling, Skating (roller skate and blade), Volley ball, Badminton, Softball, Yoga, Gardening, Astronomy, Music (Guitar and Classical)
References
Dr. George G. T. Yeh
Pennsylvania State University
Department of Civil and Environmental Engineering
212 Sackett Building
University Park, PA 16802
Phone (814) 863-2931
eamil: gty@arlvax.arl.psu.edu
Dr. Philip M. Jardine
Environmental Sciences Division
Oak Ridge National Laboratory
P.O. Box 2008
Oak Ridge, Tennessee 37831-6038
Phone (423) 574-8058
Fax (423) 576-8646
email: ipj@ornl.gov
Dr. Ed D'Azevedo
Computer Science and Mathematics Division
Oak Ridge National Laboratory
P.O.Box 2008, Bldg 6012
Oak Ridge, TN 37831-6367
Email: e6d@ornl.gov
Phone: (423) 576-7925
Fax: (423) 574-0680
Dr. Meng-Dawn Cheng
Oak Ridge National Laboratory
Environmental Sciences Division
Bldg. 1507, MS 6038
Oak Ridge, TN 37831-6038
Email: chengmd@ornl.gov
Phone: (423) 241-5918
Fax : (423) 576-8646
Dr. Glenn Wilson
USDA-ARS National Sedimentation Laboratory
598 McElroy Dr.
Oxford, MS 38655
Phone: (662) 232-2927
Fax: (662) 232-2915
email: wilson@sedlab.olemiss.edu