SwRI Geosciences and Engineering, Hydrology Technical Papers Presented

Hydrology

Technical Papers Presented

For information on the papers listed, write Communications.

2008

Dinwiddie, C.L. and H.G. Sizemore. 2008. JSC Mars-1 Soil Moisture Characteristic and Soil Freezing Characteristic Curves for Modeling Bulk Vapor Flow and Soil Freezing. Lunar and Planetary Science XXXIX, Abstract 2394. League City, TX: 10–14 March. Available at http://www.lpi.usra.edu/meetings/lpsc2008/pdf/2394.pdf.

Green, R.T., P. Bertetti, A.P. Morris, D.A. Ferrill, and R. Klar. Dynamic Hydraulic Boundaries within the Western Edwards Aquifer. American Association of Petroleum Geologists Annual Meeting, San Antonio, Texas, 20–23 April 2008

Painter, S., H. Basagaoglu, and A. Liu. Robust Representation of Dry Cells in MODFLOW. Presented at MODFLOW and More: Ground Water and Public Policy, Golden, Colorado, 19–21 May 2008.

2007

Dinwiddie, C.L., D. Or, S.A. Stothoff, R.W. Fedors, J.A. Pohle and M. Tuller. 2007. Sensors and Monitoring Techniques for the Deep Unsaturated Zone: Reducing Uncertainty Related to Seepage and Transport in Fractured Rock. Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract H11A-0151. San Francisco, CA: 10–14 December.

Painter, S. 2007. Development and Validation of a Numerical Model for Multiphase Flow in Partially Frozen Porous Media. Eos Trans. AGU, 88(52), Fall Meet. Suppl., San Francisco, CA: 10–14 December.

Painter, S.L., J. Myers, L. Sabido and A. Sun. 2007. Sensitivity of Repository Thermal-Hydrogeological-Chemical Simulations to Choice of Numerical Algorithm. Joint International Topical Meeting on Mathematics & Computation and Supercomputing in Nuclear Applications. Monterey, California, April 15–19.

Stothoff, S., G. Walter, R. Fedors, and E. Peters. 2007. Constraining Estimates of Long-Term-Average Net Infiltration at Yucca Mountain. Devil's Hole Workshop, Death Valley, California, May 2–3.

2006

Fedors, R. and S. Stothoff. 2006. Relationship of Short-term Precipitation Records at Yucca Mountain to Long-Term Climate Records. Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract H11F–1317.

Green, R.T. and S.L. Painter. 2006. Thermohydrological Model Uncertainty Reduction Using Physical Analog Models. In Proceedings of the International High-Level Radioactive Waste Management Conference, Las Vegas, NV, April 30–May 2.

Green, R., C. Manepally, R. Fedors, J.P. Gwo, and K. Smart. 2006. A Model for Understanding Flow Processes and Moisture Distribution in Rock Rubble. Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract H21C–1390.

Manepally, C., R. Green, D. Dunn, R.T. Pabalan, and Y. Pan. 2006. Model for the Evolution of Thermohydrology and Its Effects on Chemistry and Corrosion of Engineered Barrier Materials. Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract H11F–1310.

Painter, S.L. and V. Cvetkovic. 2006. Effect of Kinetic Limitations on Colloid-Facilitated Radionuclide Transport at the Field Scale. In Proceedings of the International High-Level Radioactive Waste Management Conference, Las Vegas, NV, April 30–May 2.

Painter, S.L., O. Pensado, and V. Cvetkovic. 2006. Time-Domain Random Walk Methods for Radionuclide Transport. In Proceedings of the International High-Level Radioactive Waste Management Conference, Las Vegas, NV, April 30–May 2.

Painter, S.L., A. Sun and R.T. Green. 2006. Experience With a Dual-Conductivity Flow Model Applied To Karst Aquifers. Geological Society of America Annual Meeting, Philadelphia, PA, October 22–25. Abstract 74–2.

Painter, S.L., V. Cvetkovic, J.W. Mancillas, and O. Pensado. 2006. Multiscale Particle Based Method for Simulating Transport in Fractured Rock. Geological Society of America Annual Meeting, Philadelphia, PA, October 22–25. Abstract 102–11.

Painter, S.L., V. Cvetkovic, J.W. Mancillas, and J.O. Selroos. 2006. Method for Efficient Simulation of Radionuclide Transport in Discrete Fracture Networks. Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract H11H–07.

Stothoff, S. and R. Fedors. 2006. Mountain-Front Distributed Recharge in Nevada. Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract H41B–0392.

2005

Lenhard, R., P. Meakin, H. Basagaoglu, and A.M. Tartakovsky. 2005. Investigating Water Movement through Fractured Subsurface Systems: A Mesoscale Approach. Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abtract H131–1415.

Manepally, C., and R.W. Fedors. 2005. Effects of Natural Drift Degradation on In-Drift Moisture Distribution. Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract H21B–1334.

Stothoff, S. 2005. Estimating the Influence of Vegetation on Net Infiltration under Future Climatic Conditions. Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract H53E–0535.

Sun, A., S. Painter, and R. Green. 2005. Modeling Barton Springs Segment of the Edwards Aquifer using MODFLOW-DCM, presented at ASCE 10th Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst. San Antonio, TX.

2004

Browning, L., L. Yang, R. Pabalan, C. Manepally, and R. Fedors. 2004. Estimated Effects of Temperature-Relative Humidity Variations on the Composition of In-Drift Water in the Potential Nuclear Waste Repository at Yucca Mountain, Nevada, 28th International Symposium on the Scientific Basis for Nuclear Waste Management-Material Research Society (MRS) 2004 Spring Meeting, San Francisco, CA, April 12-16, 2004

Browning, L., R. Fedors, L. Yang, O. Pensado, R. Pabalan, C. Manepally, and B. Leslie. 2004. Estimated Effects of Temperature-Relative Humidity Variations on the Composition of In-Drift Water in the Potential Nuclear Waste Repository at Yucca Mountain, Nevada. International Symposium on the Scientific Basis for Nuclear Waste Management XXVIII. Materials Research Society 2004 Spring Meeting, San Francisco, CA, April 12–16.

Dinwiddie, C.L., N.M. Coleman, and M. Necsoiu. 2004. Walla Walla Vallis and Wallula Crater: Two recently discovered Martian features record aqueous history. 35th Lunar and Planetary Science Conference, League City, Texas: March 15–19, 2004. (submitted abstract).

Dinwiddie, C.L., K.K. Bradbury, R.N. McGinnis, R.W. Fedors, and D.A. Ferrill. Heterogeneous permeability induced by fault zone deformation in nonwelded ignimbrite: Chalk Cove fault, Bishop Tuff, Bishop, California. Geological Society of America Fall Meeting, Denver, CO: November 7-10, 2004 (oral presentation).

Farrell, D.A. 2004. Overview of Freshwater Issues in the Caribbean. Caribbean Climate Change Meeting to Assess the Impacts of Future Climate Change on Freshwater Resources. Jamaica: March.

Fedors, R.W., C. Manepally, L.B. Browning, G.R. Adams, and S.T. Green. 2004. Evaluation of Large-Scale Temperature Gradients to Support Assessment of Convection and Cold-Trap Processes in Heated Drifts. Society for Mining, Metallurgy, and Exploration 2004 Annual Meeting and Exhibit, Denver, CO: February 23–25.

Green, R.T. 2004. The Integrated Flow Dynamics of a Karst and Fluvial Aquifer System. In Proceedings of the 32nd Int. Geol. Congr. Florence, Italy. Abstract 186–15.

Green, R.T., N. Franklin, and J. Prikryl. 2004. Constraining Models of Groundwater Flow Using Results from an Electrical Resistivity Survey. In Proceedings of the 2004 SAGEEP Conference, p. 1280. Colorado Springs, CO.

Green, R.T., S. L. Painter, and A. Sun. 2004. Groundwater Contamination in Karst Terrains. 36th Mid-Atlantic Industrial and Hazardous Waste Conference. Storrs, CN.

Manepally, C., A. Sun, and R.W. Fedors. 2004. Effects of Natural Drift Degradation on In-drift Thermohydrological Conditions. Eos Trans. AGU, 85(47), Fall Meet. Suppl., Abstract H31D–0410.

Manepally, C., and R.W. Fedors. 2004. Spatial Variation of In-Drift Environmental Conditions Based on a Porous Media Approach. 2004 ASME Heat Transfer and Fluid Engineering Summer Conference, Charlotte, NC, July 11–17.

Painter, S. 2004. Comparison between multiple and dual continuum representations of nonisothermal processes in fractured rock. Second International Symposium on Dynamics of Fluids in Fractured Rock, Berkeley CA, February 10-12.

Painter, S., V. Cvetkovic, and J.-O. Selroos. 2004. Upscaling discrete fracture network simulations of solute transport. Second International Symposium on Dynamics of Fluids in Fractured Rock, Berkeley CA, February 10-12.

Painter, S.L., A. Sun, and R.T. Green. 2004. Evaluation of Strategies for Modeling Flow in Karst Aquifers. In Proceedings of the 32nd Int. Geol. Congr. Florence, Italy. Abstract 186–13.

Painter, S.L., A. Sun, and R.T. Green. 2004. A MODFLOW-based Approach to Modeling Flow in Karst Aquifers. Geological Society of America Annual Meeting, Denver, CO: November 7–10. Abstract 10–5.

Sun, A., S. Painter, and R. Green. 2004. Assessment of Smeared Conduit Approach for Modeling Karst Conduit Flows. Geological Society of America Annual Meeting, Denver, CO: November 7–10, Abstract 10–6.

2003

Browning, L., W.M. Murphy, C. Manepally, and R. Fedors. 2003. Reactive Transport Simulations of Alternative Flow Pathways in the Ambient Unsaturated Zone at Yucca Mountain, Nevada. Geophysical Research Abstracts, 5, 04741, European Geophysical Society, Nice, France, April 4–13.

Browning, L., W.M. Murphy, C. Manepally, and R. Fedors. 2003. Effects of Alternate Flow Pathways on Water Chemistries in Reactive Transport Simulations of the Ambient Unsaturated Zone at Yucca Mountain, Nevada. Devil's Hole Workshop, Death Valley, CA, May 21–23.

Browning, L., W.M. Murphy, C. Manepally, and R. Fedors. 2003. Reactive Transport Model for Fracture and Matrix Geochemistry at Yucca Mountain, Nevada. Eos Trans. AGU, 84(46), Fall Meet. Suppl., Abstract H21D–0835.

Coleman, N.M., C.L. Dinwiddie, and K. Casteel. 2003. High channels on Mars indicate Hesperian recharge at low latitudes. Sixth International Conference on Mars. Pasadena, California, July 20–25, 2003.

Coleman, N.M., and C.L. Dinwiddie. 2003. Groundwater recharge in an epoch of climax lakes in the Valles Marineris, Mars. 34th Lunar and Planetary Science Conference. League City, Texas, March 17–21, 2003.

Dinwiddie, C.L. 2003. The new small drillhole minipermeameter probe for in situ permeability measurement. Proceedings of Society of Petroleum Engineers Annual Technical Conference and Exhibition, SPE 84595. Denver, Colorado, October 5–8, 2003.

Dinwiddie, C.L., and K.K. Bradbury. 2003. In-situ measurement of nonwelded tuff permeability where heterogeneities are induced by fault zone deformation, Bishop Tuff, Bishop, California. Workshop on Fluid Flow and Transport through Faulted Ignimbrites and other Porous Media. Santa Fe, New Mexico, September 8–10, 2003.

Dinwiddie, C.L., and R.N. McGinnis. 2003. Heavy oil reservoir outcrop analog near Escalante, Utah: Analysis of a gas permeability data set for non-Darcy flow effects. Geological Society of America Fall Meeting. Seattle, Washington, November 2–5, 2003.

Fedors, R.W., C. Manepally, L.B. Browning, G.R. Adams, and S.T. Green. 2003. Effects of the Cold-Trap Process in Drifts for the Proposed Repository at Yucca Mountain. 2004 Society for Mining, Metallurgy, and Exploration Annual Meeting and Exhibit, Denver, CO: February 23–25.

Green, R.T. 2003. Geophysical Characterization of Karst Media. Annual Spring Meeting of the Texas Speleological Society, Boerne, Texas, May 3.

Manepally, C., R. Fedors, G. Adams, and S. Green. 2003. Effects of Drift Degradation on Environmental Conditions in Drifts. Eos Trans. AGU, 84(46), Fall Meet. Suppl., Abstract H21D–0836.

Manepally, C. and R. Fedors. 2003. Edge-Cooling Effect on the Potential Thermohydrologic Conditions at Yucca Mountain. In Proceedings from the International High-Level Radioactive Waste Management Conference, Las Vegas, NV, March 30–April 3.

Painter, S. 2003. MarsFlo: A general tool for simulating hydrological processes in the subsurface of Mars, Sixth International Conference on Mars, Pasadena, California, July 20 25.

Stothoff, S., and S. Mitchell-Bruker. 2003. Everglades Modeling. Eos Trans. AGU, 84(46), Fall Meet. Suppl., Abstract NG31A–0602.

Stothoff, S., and S. Mitchell-Bruker. 2003. Modeling Changes in Flow Induced by Anisotropy of Vegetation Patches and Topographic Features. Joint Conference on the Science and Restoration of the Greater Everglades and Florida Bay Ecosystem, GEER Program, Palm Harbor, FL, p. 531.

2002

Bradbury, K.K., D.A. Ferrill, C.L. Dinwiddie, and R.W. Fedors. 2002. Fault zone characteristics and deformation mechanisms of porous nonwelded Bishop Tuff. Eos Transactions of the American Geophysical Union 83(47), American Geophysical Union Fall Meeting, San Francisco, California, December 6–10, 2002.

Browning, L., W.M. Murphy, C. Manepally, R. Fedors, and D. Hughson. 2002. Conceptualization and Calibration of a One Dimensional Reactive Transport Model of the Ambient Unsaturated Zone Hydrochemical System at Yucca Mountain, Nevada. Eos Trans. AGU, 83(47), Fall Meet. Suppl., Abstract H62B-0849.

Fedors, R.W., and D.A. Ferrill. 2002. Potential for lateral flow associated with fractured, nonwelded, layered tuffs in the unsaturated zone. EOS, Transactions, of the American Geophysical Union, 2002 Fall Meeting Supplement, Abstract H52B-0875.

Mitchell-Bruker, S., D. Childers, M. Ross, L. Leonard, H. Solo-Gabriel, and S. Stothoff. 2002. Determining the Role of Sediment Deposition and Transport in the Formation and Maintenance of Tree Islands in the Florida Everglades. Eos Trans. AGU, 83(19), Spring Meet. Suppl., Abstract H31A–07.

Painter, S., D. Boice, L. Browning, C. Dinwiddie, and D. Pickett. 2002. Computational tools for simulating thermal-hydrological-chemical conditions in the subsurface. 34th Annual Meeting of the Division for Planetary Sciences of the American Astronomical Society. Huntsville, Alabama: October 6–11, 2002 (poster).

Painter, S., A. Woodbury, and Y. Jiang. 2002. Estimating transmissivity in the Edwards aquifer using geostatistics, upscaling, and Bayesian updating, American Geophysical Union Fall Meeting, San Fransisco, CA.

Stothoff, S. 2002. Advective Mechanisms in Tree Island Formation. Eos Trans. AGU, 83(19), Spring Meet. Suppl., Abstract H31A-08.

2001

Dinwiddie, C.L., C.J. Lorinovich, F.J. Molz, III, J.W. Castle, R.A. Bridges, and S. Lu. 2001. Application of the new drill-hole minipermeameter probe to characterization of facies-dependent permeability variations in shallow-marine sandstones, Southern Utah. American Association of Petroleum Geologists Annual Meeting, Denver, Colorado, June 3–6, 2001.

Walter, G.R., S.J. Smith, L. Major, and J. Tang. 2001 Evaluating landfill bioreactions using a numerical model. Proceedings of 14th Annual Symposium Arizona Hydrological Society, Tucson, Arizona.

Woolhiser, D.A., R.W. Fedors, and S.A. Stothoff. 2001. Effects of Topography and Soil Depth on Focused Infiltration: Upper Split Wash Watershed, Nevada. Eos Trans. AGU, 82(47), Fall Meet. Suppl., Abstract H41G–11.

2000

Lorinovich, C.J., J.W. Castle, R.A. Bridges, C.L. Dinwiddie, F.J. Molz, III, and S. Lu. 2000. Geological controls on facies-dependent permeability variations in shallow-marine sandstones, southern Utah. Geological Society of America Fall Meeting, Reno, Nevada, November 13–16, 2000.

Lu, S., C.L. Dinwiddie, F.J. Molz, III, J.W. Castle, R.A. Bridges, and C.J. Lorinovich. 2000. Fractal scaling properties of permeability (k) measured in a shallow marine sandstone using the new drill-hole gas mini-permeameter. Geological Society of America Fall Meeting, Reno, Nevada, November 13–16, 2000.

Painter, S. 2000. Industrial applications of stochastic models with long-range spatial dependence, European Geophysical Society, Nice France, March 2000. Invited.

Painter, S. 2000. The case for a neoclassical approach to subsurface heterogeneity modeling, American Geophysical Union Fall Meeting, December 2000. Invited.

1999

Ciocco, J., R. Fedors, J. Winterle, and S. Stothoff. 1999. Evaluation of Hydrologic Parameters Used to Assess Performance at Yucca Mountain, Nevada. Eos Trans. AGU, 80(46), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F399. Abstract H32C–21.

Farrell, D.A., C. Connor, P. LaFemina and R. Fedors. 1999. Geophysical and Hydrogeological Studies Along a Fault Zone. Eos Trans. AGU, 80(17), Spring Meet. Suppl., Abstract U32A–17.

Fedors, R., D. Or, T. Ghezzehei, and S. Stothoff. 1999. Dripping into Subterranean Cavities from Unsaturated Fractures. Eos Trans. AGU, 80(17), Spring Meet. Suppl., Washington, DC: American Geophysical Union, pp. S9. Abstract U32A–10.

Groeneveld, D., S. Stothoff, and R. Fedors. 1999. Climate-sensitive Vegetation Model on Yucca Mountain, Nevada, Driven by Elevation, Slope, and Aspect. Eos Trans. AGU, 80(46), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F465. Abstract H52B–04.

S. Painter. 1999. On the characterization of highly heterogeneous aquifers: Alternative methods based on non-Gaussian random fields, Geological Society of America Annual Meeting, October 1999. Invited.

Stothoff, S., D. Groeneveld, O. Chadwick, and R. Fedors. 1999. Response of Deep Percolation to Vegetation Succession Scenarios at Yucca Mountain, NV. Eos Trans. AGU, 80(46), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F458. Abstract H51D–10.

Stothoff, S., O. Chadwick, D. Groeneveld, D. Or, R. Fedors, and D. Woolhiser. 1999. Assessing Changes in Deep Percolation Over a Glacial Cycle due to Linked Changes in Climate, Soils, and Vegetation at Yucca Mountain, NV. Eos Trans. AGU, 80(17), Spring Meet. Suppl., Washington, DC: American Geophysical Union, pp. S3–S4. Abstract U22A–01.

Stothoff, S., D. Hughson, G.I. Ofoegbu, R. Green, R. Fedors, D. Or, and M. Tuller. 1999. Discrete-Fracture Modeling of Drift-Scale Processes at Yucca Mountain, NV. Eos Trans. AGU, 80(17), Spring Meet. Suppl., Washington, DC: American Geophysical Union, pp. S10. Abstract U32A–16.

Woolhiser, D., R. Fedors, D. Waiting, and S. Stothoff. 1999. Possible Sources of Focused Infiltration: Upper Split Wash Watershed, Yucca Mountain, Nevada. Eos Trans. AGU, 80(46), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F350. Abstract H21D–02.

1998

Coleman, N., N. Eisenberg, N. Stablein, D. Brooks, R. Fedors, B. Sagar, and S. Stothoff. 1998. Refinement of Deep Percolation Estimates at Yucca Mountain in a Regulatory Framework. Eos Trans. AGU, 79(45), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F309. Abstract H21B–12.

Painter, S. 1998. Conditional simulation of subsurface properties using models with long-range dependence, Chapman Conference on Fractal Scaling, Chaos and Nonlinear Dynamics in Hydrologic Science, March 1998. Invited.

Painter, S. 1998. Long-range dependence in the subsurface: Empirical evidence and simulation methods, American Geophysical Union Fall Meeting, December 1998. Invited.

Stothoff, S. 1998. Conservative Estimates of Bulk Properties in Unsaturated Heterogeneous Porous Media. Eos Trans. AGU, 79, Spring Meet. Suppl., Washington, DC: American Geophysical Union, pp. S133. Abstract H42D–07.

Stothoff, S., O. Chadwick, D. Groeneveld, D. Or, and R. Fedors. 1998. Coupling Deep Percolation to Geomorphic Response Over a Glacial Cycle in a Semiarid Watershed. Eos Trans. AGU, 79(45), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F290. Abstract H12C–06.

1997

Stothoff, S., D. Or, and D. Groeneveld. 1997. Hydrologic Interactions in Shallow Vegetated Soil Overlying Fractured Bedrock. Eos Trans. AGU, 78(46), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F262. Abstract H32A–06.

Winterle, J.R., and S. Stothoff. 1997. Inconsistencies Between Laboratory-Determined Moisture Retention Characteristics and Observed Matrix Sorptivity. Eos Trans. AGU, 78(46), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F308. Abstract H51B–08.

Woolhiser, D.A., S.A. Stothoff, and G.W. Wittmeyer. 1997. Estimating Recharge through the Ephemeral Channels of Solitario Canyon—Yucca Mountain, Nevada. Eos Trans. AGU, 78(46), Fall Meet. Suppl., Washington, DC: American Geophysical Union, pp. F262. Abstract H32A–07.

1996

Stothoff, S.A. 1996. Estimating Shallow Infiltration at Yucca Mountain, Nevada. INVITED. Geological Society of America Spring Sectional Meeting, Austin, TX.

Stothoff, S.A., A.C. Bagtzoglou, and H. Castellaw. 1996. Estimation of Spatial Distribution of Recharge Factors at Yucca Mountain, NV. In Proceedings of the International Conference on Application of Geographic Information Systems in Hydrology and Water Resources Management. Vienna, Austria: International Association of Hydrological Sciences.

1995

Green, R.T., G.W. Wittmeyer, and A.C. Bagtzoglou. 1995. Uncertainty Reduction in the Implementation of a Geologic High Level Waste Repository Performance Regulation Using Subsurface Flow Models. INVITED. Eos Trans. AGU, 76(17), Spring Meet. Suppl., Washington, DC: American Geophysical Union, pp. S110–S111.

Stothoff, S.A. and A.C. Bagtzoglou. 1995. Estimation of Recharge at Yucca Mountain, Nevada. Eos Trans. AGU, 76, Washington, DC: American Geophysical Union, p. F242. Abstract H41B–18.

1993

Ahola, M.P., and B. Sagar. 1992. Regional Groundwater Modeling of the Saturated Zone in the Vicinity of Yucca Mountain, Nevada. NUREG/CR–5890, CNWRA 92-001. Washington, DC: U.S. Nuclear Regulatory Commission. October 1992.

Mohanty, S., A.C. Bagtzoglou, and A. Nedungadi. 1993. Efficient Calculation of Effective Hydraulic Conductivities for Unsaturated, Fractured Porous Media. Eos Trans. AGU, 74(43), Fall Meet. Suppl., p. 308.

1992

Bagtzoglou, A.C., R. Ababou, and B. Sagar. 1992. Effects of Some Common Geological Features on 2-D Variably Saturated Flow. Materials Research Society Fall Meeting, p. 613.

Stothoff, S.A. 1992. A Semi-Analytic Solution Technique for Conservation Equations. In R. Vichnevetsky, D. Knight, and G. Richter (Eds.), Advances in Computer Methods for Partial Differential Equations VII, New Brunswick, NJ: International Association for Mathematics and Computers in Simulation.

Stothoff, S.A., and D.E. Dougherty. 1992. Implementing a Three-Dimensional, Two-Phase Flow Model on the Connection Machine. In T.F. Russell, R.E. Ewing, C.A. Brebbia, W.G. Gray, and G.F. Pinder (Eds.) Computational Methods in Water Resources IX, 1. Southampton, United Kingdom: Computational Mechanics Publications, pp. 705–712.

Stothoff, S.A., and G.F. Pinder. 1992. Contaminant Transport Simulation with Boundary Elements and Multiquadrics. Eos Trans. AGU, 73, Washington, DC: American Geophysical Union.

1991

Walter, G.R., and J.R. Norris. 1991. Hydrochemical zoning in the Pinal Creek alluvium. Presented at the U.S. Geological Survey Toxic Substances Hydrology Technical Meeting, Monterey, California.

1985

Walter, G.R. 1985. Nonadvective transport processes in rocks of very low permeability. Proceedings of a Symposium on Hydrogeology of Rocks of Low Permeability, International Association of Hydrogeologists, 17th International Congress.

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