Papers in Proceedings and Reports

2007

Brainard, J.R., D.L. Alumbaugh, D.J. LaBrecque, and G.L. Hammond, A resolution analysis of two geophysical imaging methods for characterizing and monitoring hydrologic conditions in the vadose zone, 2007 (SNL paper SAND2007-3539).
Brainard, J.R., R.J. Glass, C. Roepke, M. Mann, and J. Schwing, Preliminary characterization test of vadose Zone transport pathways at Fernald: data report, summer 1993, 2005 (SNL paper SAND2005-3829).

2005

Brainard, J.R., R.J Glass, D.L. Alumbaugh, L. Paprocki, D.J. LaBrecque, X. Yang, T.-C.J. Yeh, K.E. Baker, and C.A. Rautman, The Sandia-Tech vadose zone facility: experimental design, and data, report of a constant-flux infiltration experiment, 2005 (SNL paper SAND2005-5070).

2002

Nicholl, M.J., and R.J. Glass, Field investigation of flow processes in an initially dry fracture network at Fran Ridge, Yucca Mountain, Nevada: A photo essay and data summary, 2002 (SNL paper SAND02-1369).

2001

Conrad, SH, and RJ Glass, The physics of DNAPL migration and remediation, Interim report to the DOE/EMSP program, 2001 (SNL paper SAND01-2738P).
Alumbaugh, DL, JR Brainard, RJ Glass, TC-J Yeh, D LaBrecque, A hybrid hydrologic-geophysical inverse technique for the assessment and monitoring of leachates in the vadose zone, Final report to the DOE/EMSP program, 2001 (SNL paper SAND01-1173P).

2000

Pringle, S.E., and R.J. Glass, Experimental investigation of double-diffusive finger convection in analog porous media: Preliminary analysis of scaling relationships for low magnitude Rayleigh space, EM2000 Engineering Mechanics Conference, Am. Soc. of Civil Engineers (ASCE), May 21-24, 2000 (SNL paper SAND00–3206C).

1997

Borchers, B., S.H. Conrad, E.K. Webb , R.J. Glass, and R. Cox, A simulation and decision analysis approach to locating DNAPL in subsurface sediments, LDRD Project completion report, 22 pp., 1997 (SNL paper SAND97-2261).
Glass, R.J., M.J. Nicholl, and L. Yarrington, Development and experimental evaluation of models for low capillary number two-phase flows in rough walled fractures relevant to natural gradient conditions, YMP Milestone Report, 109 pp., 1997 (SNL paper SAND96-2820).

1996

Eaton, R.R., C.K. Ho, R.J. Glass, M.J. Nicholl, and B. W. Arnold, Modeling of flow through fractured tuff at Fran Ridge, Proc. 7th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 29 – May 3, Las Vegas, NV, pp. 76-78, 1996 (SNL paper SAND95-2618C).
Brainard, R.J., P.W. Burck, M. Eliassi, J.T. McCord, R.J. Glass, C. Roepke, R. Holt, D. Garrett, D. Crowson, D. Fox, P. Giarratano, K. Kriel, and M. Mann, Tijeras Arroyo infiltration experiment, Sandia Environmental Restoration Project Report, 149 pages, 1996.
Glass, R.J., M.J. Nicholl and V.C. Tidwell, Challenging and improving conceptual models for isothermal flow in unsaturated, fractured rock through exploration of small scale processes, YMP Milestone Report, 64 pp., 1996 (SNL paper SAND95-1824).
Eaton, R.R., C.K. Ho, R.J. Glass, M.J. Nicholl, and B. W. Arnold, Three-dimensional modeling of flow through fractured tuff at Fran Ridge, YMP Milestone Report, 60 pp., 1996 (SNL paper SAND95-1896).

1995

Borchers, B., S.H. Conrad, R. Cox, R.J. Glass, and E.K. Webb, A simulation and decision analysis approach to locating DNAPLs in subsurface sediments, In: Proceedings of 1st U.S. EPA Workshop on Next Generation Environmental Models and Computational Methods, August 7-9, Bay City, MI, 1995.
Roepke, C., Glass, R.J., J. Brainard, M. Mann, K. Kriel, R. Holt, and J. Schwing, Transport processes investigation, Fernald, 1994, Uranium in Soils Project Report, 159 pp., 1995.
Glass, R.J., J. Brainard, C. Roepke, M. Mann, and J. Schwing, Preliminary vadose zone transport pathway characterization test within glacial till at Fernald, Ohio: Data report, summer 1993, Uranium in Soils Project Report, 84 pp., 1995.
Roepke, C., R.J. Glass, J. Brainard, M. Mann, K. Kriel, R. Holt and J. Schwing, Transport Processes Investigation: A necessary first step in site scale characterization plans, Proceedings of Waste Management 95, Feb 26 – March 7, Tucson, AZ, session 27, paper #20, 1995 (SNL paper SAND95-0289C).
Nicholl, M.J. and R.J. Glass, Effective media models for unsaturated fractured rock: A field experiment, Proc. 6th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 30 – May 5, Las Vegas, NV, pp. 39-40, 1995 (SNL paper SAND94-2826C).
Glass, R.J., and M.J. Nicholl, Near drift two-phase flow processes within regionally saturated fractured rock, Proc. 6th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 30 – May 5, Las Vegas, NV, pp. 212-216, 1995 (SNL paper SAND94-2873C).
Geller, J.T., C. Doughty, J.C.S. Long, R.J. Glass, Disturbed Zone Effects: Two Phase Flow in Regionally Water-Saturated Fractured Rock FY94 Annual Report.

1994

Glass, R.J., V.C. Tidwell, A.L. Flint, W.P. Peplinski, and Y. Castro, Fracture-matrix interaction in Topopah Spring Tuff: Experiment and Numerical Analysis, Proc. 5th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, May 22-26, Las Vegas, NV, pp. 1905-1914, 1994 (SNL paper SAND94-0443C).
Nicholl, M.J., and R.J. Glass, 1994, Wetting phase permeability in a partially saturated horizontal fracture, Proc. 5th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, May 22-26, Las Vegas, NV, pp. 2007-2019, 1994 (SNL paper SAND93-2774C).
Ho, C.K., K.S. Maki and R.J. Glass, Studies of non-isothermal flow in saturated and partially saturated porous media, Proc. 5th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, May 22-26, Las Vegas, NV, pp. 2481-2491, 1994 (SNL paper SAND93-4045C).

1993

Martin, K.A., D.C. Baird, and R.J. Glass, Infiltration into thick unsaturated alluvial deposits: a preliminary study, Proc. of the 1993 National Conf. on Hydraulic Engineering and International Symposium on Engineering Hydrology, San Francisco, CA, July 25-30, 1993, Engineering Hydrology Volume, pp. 174-179, 1993.
Nicholl, M.J., R.J. Glass, and H.A. Nguyen, Small-scale behavior of single gravity driven fingers in an initially dry fracture, Proc. 4th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 26-30, Las Vegas, NV, pp. 2023-2033, 1993 (SNL paper SAND92-2790C).
Nicholl, M.J., R.J. Glass, and H.A. Nguyen, Wetting front instability in an initially wet unsaturated fracture, Proc. 4th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 26-30, Las Vegas, NV, pp. 2061-2071, 1993 (SNL paper SAND92-2791C).
Glass, R.J., Modeling gravity driven fingering in rough-walled fractures using modified percolation theory, Proc. 4th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 26-30, Las Vegas, NV, pp. 2042-2053, 1993 (SNL paper SAND92-2792C).
Reimus, P.W., R.J. Glass, and B.A. Robinson, Aperture characteristics, saturated fluid flow, and tracer transport calculations for a natural fracture, Proc. 4th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 26-30, Las Vegas, NV, pp. 2009-2017, 1993 (SNL paper SAND92-2793C).
Foltz, S.D., V.C. Tidwell, and R.J. Glass, Investigation of fracture matrix interaction: Preliminary experiments in a simple system, Proc. 4th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 26-30, Las Vegas, NV, pp. 328-326, 1993 (SNL paper SAND92-2670C).
Springer, E.P., M.D. Siegel, P.L. Hopkins, and R.J. Glass, Testing models of flow and transport in unsaturated porous media, Proc. 4th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 26-30, pp. 336-348, 1993 (SNL paper SAND92-2797C).
Norton, D.L., and R.J. Glass, Full-field dye measurement within saturated/unsaturated thin slabs of porous media, Proc. 4th Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 26-30, Las Vegas, NV, pp. 1066-1075, 1993 (SNL paper SAND92-2795C).

1992

Nicholl, M.J., R.J. Glass and H.A. Nguyen, Gravity-driven fingering in unsaturated fractures, Proc. 3rd Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 12-16, Las Vegas, NV, pp. 321-331, 1992 (SNL paper SAND91-1985C).
Glass R.J., and D.L. Norton, Wetted region structure in horizontal unsaturated fractures, Proc. 3rd Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 12-16, Las Vegas, NV, pp. 717-726, 1992 (SNL paper SAND91-2030C).
Tidwell, V.C. and R.J. Glass, X-ray absorption and transmitted light as two-dimensional, full-field moisture sensing techniques, Proc. 3rd Int. Conf. of High Level Rad. Waste Manag., American Nuclear Society, April 2-16, Las Vegas, NV, pp. 1099-1110, 1992 (SNL paper SAND91-1983C).
Tidwell, V.C., R.J. Glass and C.A. Rautman, Field research program for unsaturated flow and transport experimentation, Proc. 3rd Int. Conf. of High Level Rad. Waste Manag., American Nuclear Society, Las Vegas, NV, April 12-16, pp. 704-709, 1992 (SNL paper SAND91-1984C).
Siegel, M.D., P.L. Hopkins, and R.J. Glass, Design of an intermediate scale experiment to validate unsaturated-zone transport models, Proc. 3rd Int. Conf. of High Level Rad. Waste Manag., American Nuclear Society, April 12-16, Las Vegas, NV, pp. 1972-1984, 1992 (SNL paper SAND91-2098C).

1991

Glass, R.J., and V.C. Tidwell, Research program to develop and validate conceptual models for flow and transport through unsaturated, fractured rock, Proc. 2nd Int. Conf. of High Level Rad. Waste Manage., American Nuclear Society, April 28 – May 3, Las Vegas, NV, pp. 977-987, 1991 (SNL paper SAND90-2261C).

1990

Glass, R.J., Laboratory research program to aid in developing and testing the validity of conceptual models for flow and transport through unsaturated porous media, Proc. of the GEOVAL-90 Symposium on Validation of Geosphere Flow and Transport Models, Stockholm, Sweden, May 14-17, 1990, pp. 275-283, 1990 (SNL paper SAND89-2359C).
Bell, J., J.S. Selker, T.S. Steenhuis, and R.J. Glass, Rapid moisture measurements in thin sand slabs, Am. Soc. Ag. Eng. Paper No. 90-2635. ASAE St. Joseph, MI, 1990 (SNL paper SAND91-0476C).

1988

Glass, R.J., G.H. Oosting, T.S. Steenhuis, and J-Y. Parlange, Uncertainty in model calibration and validation for the convective-dispersive process in the layered vadose zone, Proc. of the International Conference and Workshop on the Validation of Flow and Transport Models for the Unsaturated Zone, P.J. Wierenga and D. Bachelet co-editors. Univ. of NM press pp. 119-130, 1988.
Parlange, J-Y., T.S. Steenhuis, R.J. Glass, T.L. Richard, N.B. Pickering, W.J. Waltman, N.O. Bailey, M.S. Andreini, and J.A. Throop, The flow of pesticides through preferential paths in soils, New York’s Food & Life Science Quarterly, Cornell University, Ithaca, NY, Vol. 18, no. 1&2, pp. 21-24, 1988.

1987

Glass, R.J., J-Y. Parlange, and T.S. Steenhuis, Water infiltration in layered soils where a fine textured layer overlays a coarse sand, Proc. of the International Conference on Infiltration Development and Application, Yu-Si Fok Editor, Water Resources Research Center, University of Hawaii, pp. 66-81, 1987.
Oosting, G.H., R.J. Glass, and T.S. Steenhuis, Preferential solute transport through layered soil systems, Am. Soc. of Ag. Eng. Paper No. 87-2624. ASAE, St. Joseph, MI, 1987.

1984

Glass, R.J. and T.S. Steenhuis, Factors influencing infiltration flow instability and movement of toxics in layered sandy soils, Am. Soc. of Ag. Eng., Paper No. 84-2508, ASAE, St. Joseph, MI, 1984.