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Peer-Reviewed Publications

• Kamann*, P.J., R.W. Ritzi, D.F. Dominic, and C.M. Conrad*, in press, Porosity and permeability in sediment mixtures, Ground Water
• Ritzi, R.W., and R.M. Allen-King, 2007, “Why did Sudicky (1986) find an exponential-like spatial correlation structure for hydraulic conductivity at the Borden research site?” Water Resources Research, 43, W01406doi: 10.1029/2006WR004935
• †Ritzi, R.W. and Z. Dai*, 2006, Introduction: Modeling groundwater flow and reactive transport in physically and chemically heterogeneous media, Geosphere, 2(2), doi: 10.1130/GES0202INT.1
• †Dia*, Z., J. Samper, and R.W. Ritzi, 2006, Identifying geochemical processes by inverse modeling of multicomponent reactive transport in the Aquia aquifer, Geosphere, 2(2), doi: 10.1130/GES00021.1
• Ritzi, R.W., and Z. Dai*, 2006, Guest Editors, Special Issue: Modeling groundwater flow and reactive transport in physically and chemically heterogeneous media, Geosphere, Volume 2(2), (eight papers).
• Ritzi, R. W., Z. Dai*, D. F. Dominic, and Y. Rubin, 2006, Reply to comment by Shlomo P. Neuman on “Spatial correlation of permeability in cross-stratified sediment with hierarchical architecture,” Water Resources Research, 42, W05602doi: 10.1029/2005WR004402
• Dai*, Z., R.W. Ritzi, and D.F. Dominic, 2005, “Improving permeability semivariograms with transition probability models of hierarchical sedimentary architecture derived from outcrop-analog studies,”Water Resources Research, 41, W07032doi: 10.1029/2004WR002515
• Ritzi, R. W.; Dai*, Z.; Dominic, D. F.; Rubin, Y. N., 2004, “Spatial correlation of permeability in cross-stratified sediment with hierarchical architecture,” Water Resources Research, 40(3), W03513doi: 10.1029/2003WR002420
• †Dai*, Z., Ritzi, R. W., C. Huang, Y. Rubin and D. F. Dominic, 2004, “Transport in heterogeneous sediments with multimodal conductivity and hierarchical organization across scales,”  Journal of Hydrology, v. 294, Issues 1-3, p. 68-86.
• Proce*, C.J., R.W. Ritzi, D.F. Dominic, and Z. Dai*, 2004, “Modeling multiscale heterogeneity and aquifer interconnectivity,” Ground Water, 42(5), p. 658-670.
• †Dai*, Z., R.W. Ritzi, and D.F. Dominic, 2004, “Estimating parameters for hierarchical permeability correlation models,” in Aquifer Characterization, Eds. J. Bridge and D Hyndman, SEPM Special Publication No. 80, SEPM Publishing, Tulsa, p.41-54.
• †Ritzi, R.W., Z. Dai*, D.F. Dominic, and Y.N. Rubin, 2003, “Review of permeability in buried-valley aquifers: centimeter to kilometer scales,” in Calibration and Reliability in Groundwater Modelling: A Few Steps Closer to Reality, K. Kovar, ed., IAHS Publ. no. 277.
• Dai, Z., R.W. Ritzi, D.F. Dominic and Y.N. Rubin, 2003, “Estimating spatial correlation structure for permeability in sediments with hierarchical organization, in Groundwater Quality Modeling and Management Under Uncertainty,” S. Mishra, Ed., American Society of Civil Engineers, Philadelphia, p.83-100.
• †Ritzi, R.W., Z. Dai*, D.F. Dominic, and Y.N. Rubin, 2002, “Spatial structure of permeability in relation to hierarchical sedimentary architecture: centimeter to kilometer scales,” in Bridging the Gap between Measurement and Modeling in Heterogeneous Media, A. Findikakis, ed., IAHS and Lawrence Berkeley National Laboratory, CD ROM
• Bukowski*, J.M, R.W. Ritzi, C. Carney, and M. Boardman, 2001, “Explaining the thinness of fresh water lenses in the Pleistocene carbonate aquifer on Andros Island, Bahamas,” Journal of Ground Water, 39(5), p. 731-720.
• Ritzi, R.W., 2000, “Behavior of indicator variograms and transition probabilities in relation to the variance in lengths of hydrofacies,” Water Resources Research, 36(11), p. 3375-3381.
• Ritzi, R.W., D.F. Dominic, A.J. Slesers*, C.B. Greer*, E.C. Reboulet*, J.A. Telford*, R.W. Masters*, C.A. Klohe*, J.L. Bogle*, and Brent P. Means*, 2000, “Comparing statistical models of physical heterogeneity in buried-valley aquifers,” Water Resources Research, 36(11), p. 3179-3192.
• †Dominic, D.F., R.W. Ritzi, E.C. Reboulet*, and A.C. Zimmer*, 1998, “Geostatistical analysis of facies distributions: elements of a quantitative facies model,” in Hydrogeologic Models of Sedimentary Aquifers, Concepts in Hydrogeology and Environmental Geology No. 1, SEPM (Society of Sedimentary Geology) Publishers, p. 137-145.
• Podgorney*, R.K., and R.W. Ritzi, 1997, “Capture zone geometry of a fractured, carbonate aquifer,”  Journal of Ground Water.  35(6), p. 1040-1050.
• †Ritzi, R.W., D.F. Dominic, and K. Kausch*, 1996, “Aquitard distribution in a northern reach of the Miami valley aquifer: 1) three-dimensional geostatistical evaluation of physical heterogeneity,”  Hydrogeology Journal.  4(2), p. 12-24.
• †Dominic, D.F., R.W. Ritzi, and K. Kausch*, 1996, “Aquitard distribution in a northern reach of the Miami valley aquifer: 2) three-dimensional analysis of facies,”  Hydrogeology Journal.  4(2), p. 25-35.
• Sminchak*, J.R., D.F. Dominic, and R.W. Ritzi, 1996, “Indicator geostatistical analysis of sand interconnections within a till,”  Journal of Ground Water, 36(5), p. 1125-1131.
• Ritzi, R.W., D.F. Dominic, N.R. Brown*, K.W. Kausch*, P.J. McAlenney*, and M.J. Basial*, 1995, “Hydrofacies distribution and correlation in the Miami Valley aquifer system,” Water Resources Research, 31(12), p. 3271-3281.
• Gall*, I.K., R.W. Ritzi, A.D. Baldwin, P.D. Pushkar, C.K. Carney, and J.F. Talnagi, Jr., 1994, “The correlation between bedrock uranium and dissolved radon in ground water of a fractured carbonate aquifer in southwestern Ohio,” Journal of Ground Water, 33(2), p. 197-206.
• Ritzi, R.W., D.F. Jayne*, A.J. Zahradnik*, A.A. Field*, and G.E. Fogg, 1994, “Geostatistical modeling of heterogeneity in glaciofluvial, buried-valley aquifers,” Journal of Ground Water, 32(4), p. 666-674.
• Smith*, R.T, and R.W. Ritzi, 1993, “Designing a nitrate monitoring program in a heterogeneous, carbonate aquifer,” Journal of Ground Water, 31(4), p. 576-585.
• Ritzi, R.W., S.L. Wright*, B. Mann, and M. Cheng, 1993, “Considering the issue of temporal variability of regional hydrogeochemical data in a multivariate analysis of spatial variability,” Journal of Ground Water, 31(2), p. 221-229.
• Ritzi, R.W., and H.A. Andolsek*, 1992, “Relation between anisotropic transmissivity and azimuthal resistivity surveys in shallow, fractured, carbonate flow systems,” Journal of Ground Water, 30(5), p. 774-780.
• Ritzi, R.W., S. Sorooshian, and V.K. Gupta, 1991, “On the estimation of parameters for frequency domain models,” Water Resources Research, 27(5), p. 873-882. 
• Ritzi, R.W., P.A. Hsieh, and S. Sorooshian, 1991, “The estimation of fluid flow properties from the response of water levels in wells to the combined atmospheric and earth tide forces,” Water Resources Research, 27(5), p. 883-893.
• Ritzi, R.W., and T.C.J. Yeh, 1988.  “Comment on 'The Role of Groundwater in Delaying Lake Acidification' by M.P. Anderson and C.J. Bowser,” Water Resources Research, 24(5), p. 787‑790.