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Steven Yabusaki

Steven Yabusaki

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352

Education and Credentials

  • M.S. Applied Mathematics, University of Washington, 1986
  • M.S. Civil Engineering, Colorado State University, 1980
  • B.S. Civil Engineering, University of Hawaii, 1978

PNNL Publications


  • Arora B, N Spycher, C Steefel, S Molins, M Bill, ME Conrad, W Dong, B Faybishenko, TK Tokunaga, J Wan, KH Williams , and SB Yabusaki. 2016. "Influence of hydrological, biogeochemical and temperature transients on subsurface carbon fluxes in a flood plain environment." Biogeochemistry 127(2):367-396.  doi:10.1007/s10533-016-0186-8
  • Danczak RE, SB Yabusaki, KH Williams, Y Fang, C Hobson, and MJ Wilkins. 2016. "Snowmelt Induced Hydrologic Perturbations Drive Dynamic Microbiological and Geochemical Behaviors across a Shallow Riparian Aquifer." Frontiers in Earth Science 4:57.  doi:10.3389/feart.2016.00057


  • Long PE, KH Williams, JA Davis, PM Fox, MJ Wilkins, SB Yabusaki, Y Fang, SR Waichler, ES Berman, M Gupta, DP Chandler, CJ Murray, AD Peacock, L Giloteaux, KM Handley, DR Lovley, and JF Banfield. 2015. "Bicarbonate Impact on U(VI) Bioreduction in a Shallow Alluvial Aquifer." Geochimica et Cosmochimica Acta 150:106-124.  doi:10.1016/j.gca.2014.11.013
  • Steefel CI, SB Yabusaki, and KU Mayer. 2015. "Reactive transport benchmarks for subsurface environmental simulation." Computational Geosciences 19(3):439-443.  doi:10.1007/s10596-015-9499-2
  • Yabusaki SB, RJ Serne, ML Rockhold, G Wang, and JH Westsik, Jr. 2015. Technical Approach for Determining Key Parameters Needed for Modeling the Performance of Cast Stone for the Integrated Disposal Facility Performance AssessmentPNNL-24022, Pacific Northwest National Laboratory, Richland, WA. 
  • Yabusaki SB, S Sengor, and Y Fang. 2015. "A Uranium Bioremediation Reactive Transport Benchmark." Computational Geosciences 19(3):551-567.  doi:10.1007/s10596-015-9474-y


  • Napier BA, and SB Yabusaki. 2014. Methodology for Estimating the Aqueous Radionuclide Inventory from a Severe Reactor AccidentPNNL-23147, Pacific Northwest National Laboratory, Richland, WA. 
  • Qafoku N, BN Gartman, RK Kukkadapu, BW Arey, KH Williams, PJ Mouser, SM Heald, JR Bargar, N Janot, SB Yabusaki, and PE Long. 2014. "Geochemical and Mineralogical Investigation of Uranium in Multi-element Contaminated, Organic-rich Subsurface Sediment ." Applied Geochemistry 42:77-85.  doi:10.1016/j.apgeochem.2013.12.001


  • Fang Y, BN Nguyen, KC Carroll, Z Xu, SB Yabusaki, TD Scheibe, and A Bonneville. 2013. "Development of a coupled thermo-hydro-mechanical model in discontinuous media for carbon sequestration." International Journal of Rock Mechanics and Mining Sciences 62:138-147.  doi:10.1016/j.ijrmms.2013.05.002
  • Lu D, M Ye, PD Meyer, GP Curtis, X Shi, XF Niu, and SB Yabusaki. 2013. "Effects of error covariance structure on estimation of model averaging weights and predictive performance." Water Resources Research 49(9):6029-6047.  doi:10.1002/wrcr.20441
  • Yeh GT, JPJ Gwo, MD Siegel, MH Li, Y Fang, F Zhang, W Luo, and SB Yabusaki. 2013. "Innovative mathematical modeling in environmental remediation." Journal of Environmental Radioactivity 119:26-38.  doi:10.1016/j.jenvrad.2011.06.010
  • Zachara JM, PE Long, J Bargar, JA Davis, PM Fox, JK Fredrickson, MD Freshley, A Konopka, C Liu, JP McKinley, ML Rockhold, KH Williams, and SB Yabusaki. 2013. "Persistence of uranium groundwater plumes: Contrasting mechanisms at two DOE sites in the groundwater-river interaction zone." Journal of Contaminant Hydrology 147:45-72.  doi:10.1016/j.jconhyd.2013.02.001


  • Fang Y, MJ Wilkins, SB Yabusaki, MS Lipton, and PE Long. 2012. "Evaluation of a Genome-Scale In Silico Metabolic Model for Geobacter metallireducens Using Proteomic Data from a Field Biostimulation Experiment." Applied and Environmental Microbiology 78(24):8735 - 8742.  doi:10.1128/AEM.01795-12


  • Campbell KM, H Veeramani, KU Ulrich, L Blue, DE Giammar, R Bernier-Latmani, JE Stubbs, E Suvorova, SB Yabusaki, JS Lezama Pacheco, A Mehta, PE Long, and JR Bargar. 2011. "Oxidative Dissolution of Biogenic Uraninite in Groundwater at Old Rifle, CO." Environmental Science & Technology 45(20):8748-8754.  doi:10.1021/es200482f
  • Campbell KM, JA Davis, JR Bargar, DE Giammar, R Bernier-Latmani, RK Kukkadapu, KH Williams, H Veramani, KU Ulrich, JB Stubbs, SB Yabusaki, LA Figueroa, E Lesher, MJ Wilkins, AD Peacock, and PE Longg. 2011. "Composition, stability, and measurement of reduced uranium phases for groundwater bioremediation at Old Rifle, CO." Applied Geochemistry 26:S167-S169.  doi:10.1016/j.apgeochem.2011.03.094
  • Ulrich KU, H Veeramani, EJ Schofield, JO Sharp, E Suvorova, JE Stubbs, JS Lezama Pacheco, CJ Barrows, JM Cerrato, KM Campbell, SB Yabusaki, PE Long, R Bernier-Latmani, DE Giammar, and JR Bargar. 2011. "Biostimulated uranium immobilization within aquifers - from bench scale to field experiments." In 11th International Mine Water Association Congress (IMWA 2011): Mine Water - Managing the Challenges, September 4-11, 2011, Aachen, Germany, ed. TR Rude, A Freund and C Wolkersdorfer, pp. 627-631.  International Mine Water Association, Wendelstein, Germany. 
  • Yabusaki SB, Y Fang, KH Williams, CJ Murray, AL Ward, R Dayvault, SR Waichler, DR Newcomer, FA Spane, and PE Long. 2011. "Variably Saturated Flow and Multicomponent Biogeochemical Reactive Transport Modeling of a Uranium Bioremediation Field Experiment." Journal of Contaminant Hydrology 126(3-4):271-290.  doi:10.1016/j.jconhyd.2011.09.002


  • Fang Y, SB Yabusaki, SJ Morrison, JE Amonette, and PE Long. 2009. "Multicomponent reactive transport modeling of uranium bioremediation field experiments." Geochimica et Cosmochimica Acta 73(20):6029-6051. 


  • Yabusaki SB, Y Fang, and SR Waichler. 2008. "Building Conceptual Models of Field-Scale Uranium Reactive Transport in a Dynamic Vadose Zone-Aquifer-River System." Water Resources Research 44:W12403.  doi:10.1029/2007WR006617


  • Cygan R, CT Stevens, RW Puls, SB Yabusaki, RD Wauchope, CJ Mcgrath, GP Curtis, MD Siegel, LA Veblen, and DR Turner. 2007. "Research Activities at U.S. Government Agencies in Subsurface Reactive Transport Modeling." Vadose Zone Journal 6(4):805-822.  doi:10.2136/vzj2006.0091
  • Yabusaki SB, Y Fang, PE Long, CT Resch, AD Peacock, J Komlos, Jr., PR Jaffe, SJ Morrison, R Dayvault, DC White, and RT Anderson. 2007. "Uranium Removal from Groundwater via In Situ Biostimulation: Field-Scale Modeling of Transport and Biological Processes." Journal of Contaminant Hydrology 93(2007):216-235.  doi:10.1016/j.jconhyd.2007.02.005




  • Fang Y, SB Yabusaki, and GT Yeh. 2004. "A generic reaction-based biogeochemical simulator." In Proceedings of the 15th International Conference on Computational Methods in Water Resources (CMWR XV), June 13-17, 2004 Chapel Hill, NC, USA. Computational Methods in Water Resources, vol. 1, ed. C.T. Miller, M.W. Farthing, W.G. Gray, and G.F. Pinder, pp. 869-878.  Elsevier, Amsterdam, Netherlands. 
  • Lichtner PC, SB Yabusaki, K Pruess, and C Steefel. 2004. "Role of Competitive Cation Exchange on Chromatographic Displacement of Cesium in the Vadose Zone beneath the Hanford S/SX Tank Farm." Vadose Zone Journal 3(1):203-219. 
  • Rosing M, J Nieplocha, and SB Yabusaki. 2004. "Toward Efficient Compilation of User-Defined Extensible Fortran Directives." In Ninth International Workshop on High-Level Parallel Programming Models and Supportive Environments, Proceedings, pp. 61-69.  IEEE Computer Society, Los Alamitos. 
  • Um W, RJ Serne, SB Yabusaki, VL Freedman, SD Samson, and KL Nagy. 2004. "The role of secondary mineral precipitates on radionuclide sequestration at the Hanford Site." In Proceedings of the eleventh international symposium Water-Rock Interaction, WRI-11, vol. 1, ed. RB Wanty and RR Seal, pp. 715-718.  AA Balkema, Leiden, NY. 


  • Cantrell KJ, SB Yabusaki, MH Engelhard, AV Mitroshkov, and EC Thornton. 2003. "Oxidation of H2S by Iron Oxides in Unsaturated Conditions." Environmental Science and Technology 37(10):2192-2199. 


  • Yabusaki SB, and AP Gamerdinger. 2002. "Multi-region Transport and Competitive Ion Exchange in Partially Saturated Porous Media." In Computational Methods in Water Resources Proceedings of the XIVth International Conference on Computational Methods in Water Resources (CMWR XIV), June 23-28 2002, Delft, The Netherlands; Developments in Water Science , vol. 47, ed. S.M. Hassanizadeh, R.J. Schotting, et al. , pp. 579-586.  Elsevier , Amsterdam, , . 
  • Yabusaki SB. 2002. "Multiphase Fluid Flow and Multicomponent Reactive Transport at the Hanford SX Tank Farm." In Bridging the Gap between Measurement and Modelling in Heterogeneous Media: Proceedings of the International Groundwater Symposium, Lawrence Berkeley National Laboratory, Berkeley, California, March 25-28, 2002, ed. Angelos N. Findikakis, pp. 456-461.  International Association of Hydraulic Engineering and Research (IAHR), Madrid, Spain. 
  • Freshley MD, AL Bunn, GW Gee, TJ Gilmore, CT Kincaid, RE Peterson, AL Ward, SB Yabusaki, and JM Zachara. 2002. Groundwater Protection Program Science and Technology Summary DescriptionPNNL-14092, Pacific Northwest National Laboratory, Richland, WA. 
  • Pruess K, SB Yabusaki, CI Steefel, and PC Lichtner. 2002. "Fluid Flow, Heat Transfer, and Solute Transport at Nuclear Waste Storage Tanks in the Hanford Vadose Zone." Vadose Zone Journal 1(1):68-88. 
  • Yabusaki SB, SL Bryant, SY Chen, GI Fann, GP Flach, WG Gray, JP Holland, KE Jordan, RS Maier, JM Malard, DR Rector, WE Soll, CI Steefel, AF Thompson, HE Trease, MF Wheeler, and BD Wood. 2002. Mechanistic Process Modeling for Subsurface RemediationPNNL-14011, Pacific Northwest National Laboratory, Richland, WA. 


  • Yabusaki SB, KJ Cantrell, and BM Sass. 2001. "Moffett Field Funnel and Gate TCE Treatment System: Interpretation of Field Performance using Reactive Transport Modeling." In 2001 International Containment & Remediation Technology Conference & Exhibition 10-13 June 2001, Proceedings.  Institute for International Cooperative Environmental Research, Florida State University, Tallahassee, FL. 
  • Yabusaki SB, KJ Cantrell, B Sass, and C Steefel. 2001. "Multicomponent reactive transport in an in situ zero-valent iron cell." Environmental Science and Technology 35(7):1493-1503. 


  • Chilakapati A, SB Yabusaki, JE Szecsody, and WD Macevoy. 2000. "Groundwater flow, multicomponent transport and biogeochemistry: development and application of a coupled process model." Journal of Contaminant Hydrology 43(3-4):303-325. 
  • Chilakapati A, MD Williams, SB Yabusaki, CR Cole, and JE Szecsody. 2000. "Optimal design of an in situ Fe(II) barrier: Transport limited reoxidation." Environmental Science and Technology 34(24):5215-5221. 


  • Istok JD, JE Amonette, CR Cole, JS Fruchter, MD Humphrey, JE Szecsody, SS Teel, VR Vermeul, MD Williams, and SB Yabusaki. 1999. "In Situ Redox Manipulation by Dithionite Injection: Intermediate-Scale Laboratory Experiments." Ground Water 37(6):884-889. 
  • Rosing M, and SB Yabusaki. 1999. "A Programmable Preprocessor for Parallelizing Fortran-90." In Proceedings of the 1999 Conference on SuperComputing, Portland, Oregon.  ACM Press, New York, NY. 


  • Yabusaki SB, CI Steefel, and BD Wood. 1998. "Multidimensional, multicomponent, subsurface reactive transport in nonuniform velocity fields: code verification using an advective reactive streamtube approach." Journal of Contaminant Hydrology 30(3-4):299-331. 


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