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    CPG Publications only

Publications whose authors lists include at least one author from the Geofluids Research Group and M.O. Saar.

(For CO2-Plume Geothermal (CPG) publications only, click here.)

At the time when the majority of the research was performed:
  bold = author from the geofluids research group at UMN
  * = postdoc author
  underlined = student author

Refereed Publications           (in preparation or submitted)

• Kao*, P.-H., and M.O. Saar, Lattice-Boltzmann models for local transport equilibrium and non-eqilibrium convection-diffusion equations in porous media, to be submitted to International Journal of Heat and Mass Transfer.

• Kao*, P.-H., and M.O. Saar, Macroscale lattice-Boltzmann model for equilibrium and kinetic reactions in porous media.

• Walsh*, S.D.C., and M.O. Saar, A macroscopic multiple-relaxation-time lattice-Boltzmann method for advection-dispersion in heterogeneous media.

• Luhmann*, A.J., X.-Z. Kong*, B.M. Tutolo, K. Ding, M.O. Saar, and W.E. Seyfried Jr., Permeability reduction produced by grain reorganization and accumulation of exsolved CO2 during geologic carbon sequestration, submitted to Environmental Science and Technology, July 31, 2012.

Refereed Journal Publications           (published or in press, i.e., accepted)

[32] Randolph, J.B.*, B. Adams, T.H. Kuehn, and M.O. Saar, Wellbore heat transfer in CO2-based geothermal systems, Geothermal Resources Counsil Transactions, in press, 2012.
PDF | Funding: DE-EE0002764

[31] Kong*, X.-Z., B.M. Tutolo, and M.O. Saar, DBCreate: A SUPCRT92-based program for producing EQ3/6, TOUGHREACT, and GWB thermodynamic databases at user-defined T and P, Computers and Geosciences, doi:10.1016/j.cageo.2012.08.004, 2012.

[30] Covington*, M.D., A.J. Luhmann*, C.M. Wicks, and M.O. Saar, Process length scales and longitudinal damping in karst conduits, Journal of Geophysical Research, 117, F01025, doi:10.1029/2011JF002212, 2012.
PDF | Funding: NSF-EAR-0941666, NSF-DMS-0724560

[29] Alexander*, S.C., and M.O. Saar, Improved characterization of small "u" for Jacob pumping test analysis methods, Ground Water, 50, 2, 256-265, doi: 10.1111/j.1745-6584.2011.00839.x, 2012.
PDF | Funding: NSF-EAR-0838541

[28] Covington*, M.D, A.F. Banwell, J. Gulley, M.O. Saar, I. Willis, C.M. Wicks, Quantifying the effects of glacier conduit geometry and recharge on proglacial hydrograph form, Journal of Hydrology, Vol. 414-415, PP. 59-71, doi:10.1016/j.jhydrol.2011.10.027, 2012.
PDF | Funding: NSF-DMS-0724560, NSF-EAR-0941666

[27] Covington*, M.D., A.J. Luhmann*, F. Gabrovsek, M.O. Saar, and C.M. Wicks, Mechanisms of heat exchange between water and rock in karst conduits, Water Resources Research, 47, W10514, doi:10.1029/2011WR010683, 2011.
PDF | Funding: NSF-081647, NSF-0754495, NSF-EAR-0941666

[26] Randolph*, J.B., and M.O. Saar, Impact of reservoir permeability on the choice of subsurface geothermal heat exchange fluid: CO2 versus water and native brine, Geothermal Resources Council Transactions, 35, 521-526, 2011.
PDF | Funding: IREE, DE-EE0002764

[25] Randolph, J.B., and M.O. Saar, Combining geothermal energy capture with geologic carbon dioxide sequestration, Geophysical Research Letters, 38, L10401, doi:10.1029/2011GL047265, 2011.
PDF | Funding: IREE, DE-EE0002764

[24] Davis, M.A., S.D.C. Walsh*, and M.O. Saar, Statistically reconstructing continuous isotropic and anisotropic two-phase media while preserving macroscopic material properties, Physical Review E, 83. 026706, DOI: 10.1103/PhysRevE.83.026706, 2011.
PDF | Funding: NSF-EAR-0510723, NSF-0724560

[23] Randolph, J.B. and M.O. Saar, Coupling carbon dioxide sequestration with geothermal energy capture in naturally permeable, porous geologic formations: Implications for CO2 sequestration, Energy Procedia, 4, 2206-2213, DOI: 10.1016/j.egypro.2011.02.108, 2011.
PDF | Funding: IREE, DE-EE0002764

[22] Saar, M.O., Review: Geothermal heat as a tracer of large-scale groundwater flow and as a means to determine permeability fields, special theme issue on Environmental Tracers and Groundwater Flow, editor-invited peer-reviewed contribution, Hydrogeology Journal, 19:31-52, DOI 10.1007/s10040-010-0657-2, 2011. A Hydrogeology Journal Editor's Choice Article for 2011.
PDF | Funding: NSF-EAR-0838541, NSF-DMS-0724560, NSF-EAR-0941666, DE-EE0002764

[21] Walsh*, S.D.C. and M.O. Saar, Interpolated lattice-Boltzmann boundary conditions for surface reaction kinetics, Physical Review E, 82, 066703,
DOI: 10.1103/PhysRevE.82.066703, 2010.
PDF | Funding: NSF-EAR-0941666, NSF-EAR-0510723, NSF-DMS-0724560

[20] Dasgupta, S., M.O. Saar, R.L. Edwards, C.-C. Shen, H. Cheng, E.C. Alexander Jr., Three thousand years of extreme rainfall events recorded in stalagmites from Spring Valley Caverns, Minnesota, Earth and Planetary Science Letters, 300, 46-54, DOI:10.1016/j.epsl.2010.09.032, 2010.
PDF | Funding: NSF-EAR-0941666

[19] Myre, J., S.D.C. Walsh*, D. Lilja, and M.O. Saar, Performance analysis of single-phase, multiphase, and multicomponent lattice-Boltzmann fluid flow simulations on GPU clusters, Concurrency and Computation: Practice and Experience, DOI: 10.1002/cpe.1645, 2010.
PDF | Funding: NSF-DMS-0724560, NSF-EAR-0510723, NSF-EAR-0941666, NVIDIA

[18] Randolph, J.B. and M.O. Saar, Coupling geothermal energy capture with carbon dioxide sequestration in naturally permeable, porous geologic formations: A comparison with enhanced geothermal systems, Geothermal Research Council Transactions, 34, 433-438, 2010.
PDF Funding: DOE-DE-EE0002764, IREE

[17] Walsh*, S.D.C., and M.O. Saar, Macroscale lattice-Boltzmann methods for low-Peclet-number solute and heat transport in heterogeneous porous media, Water Resources Research, 46, W07517, DOI:10.1029/2009WR007895, 2010.
PDF | Funding: NSF-DMS-0724560, NSF-EAR-0510723, NSF-EAR.0941666

[16] Covington*, M.D., C.M. Wicks, and M.O. Saar, A dimensionless number describing the effects of recharge and geometry on discharge from simple karst aquifers, Water Resources Research, 45, W11410, DOI:10.1029/2009WR008004, 2009.
PDF | Funding: NSF-DMS-0724560, NSF-EAR-Fellowship-081647

[15] Walsh*, S.D.C., M.O. Saar, P. Bailey, and D.J. Lilja, Accelerating geoscience and engineering system simulations on graphics hardware, Computers and Geosciences, DOI:10.1016/j.cageo.2009.05.001, 2009.
PDF | Funding: NSF-DMS-0724560, NSF-EAR-0510723, NVIDIA

[14] Bailey, P., J. Myre, S.D.C. Walsh*, D.J. Lilja, and M.O. Saar, Accelerating Lattice Boltzmann Fluid Flow Simulations Using Graphics Processors, International Conference on Parallel Processing (ICPP), pp.550-557, 2009.
PDF | Funding: NSF-EAR-0510723, NSF-DMS-0724560, NVIDIA

[13] Walsh*, S.D.C., H. Burwinkle, and M.O. Saar, A new partial-bounceback lattice-Boltzmann method for fluid flow through heterogeneous media, Computers and Geosciences, DOI:10.1016/j.cageo.2008.05.004, 2009.
PDF | Funding: NSF-EAR-0510723, NSF-DMS-0724560

[12] Walsh*, S.D.C., and M.O. Saar, Magma yield stress and permeability: Insights from multiphase percolation theory, Journal of Volcanology and Geothermal Research, DOI: 10.1016/j.volgeores.2008.07.009, 2008.
PDF | Funding: NSF-EAR-0510723, NSF-DMS-0724560, MSI

[11] Walsh*, S.D.C., S.C. Alexander*, and M.O. Saar, Lattice-Boltzmann simulations of carbonate systems, in Sinkholes and the Environmental Impacts of Karst, Proceedings of the Eleventh Multidisciplinary Conference, Ed. L.B. Yuhr, E.C. Alexander, Jr., B.F. Beck, American Society of Civil Engineers, Geotechnical Special Publication No. 183, pp. 761, 444-453, 2008.
PDF | Funding: NSF-EAR-0510723, NSF-DMS-0724560

[10] Walsh*, S.D.C., and M.O. Saar, Numerical Models of Stiffness and Yield Stress Growth in Crystal-Melt Suspensions, Earth and Planetary Science Letters, DOI:10.1016/j.epsl.2007.11.028, 2008.
PDF | Funding: EAR-0510723, DMS-0724560

[9] Edwards, R.A., B. Rodriguez-Brito, L. Wegley, M. Haynes, M. Breitbart, D.M. Peterson, M.O. Saar, S.C. Alexander*, E.C. Alexander Jr., F. Rohwer, Using pyrosequencing to shed light on deep mine microbial ecology under extreme hydrogeological conditions, BioMed Central Genomics, DOI:10.1186/1471-2164-7-57, 2006.
PDF | Funding: NSF-DEB-BE-04-21955

[8] Christiansen, L.B., S. Hurwitz, M.O. Saar, S.E. Ingebritsen, P.A. Hsieh, Seasonal seismicity at western United States volcanic centers, Earth and Planetary Science Letters, 240, 307-321, 2005.
PDF | Funding: USGS Volcano Hazards Program

[7] Saar, M.O., M.C. Castro, C.M. Hall, M. Manga, and T.P. Rose, Quantifying magmatic, crustal, and atmospheric Helium contributions to volcanic aquifers using all stable noble gases: Implications for magmatism and groundwater flow, Geochemistry Geophysics Geosystems, Vol. 6, Nr. 3, Q03008, DOI:10.1029/2004GC000828, 2005.
PDF | Funding: U. of Michigan Turner Postdoctoral Fellowship and UCRP, LLNL

[6] Jellinek, A.M., M. Manga, and M. O. Saar, Did melting glaciers cause volcanic eruptions in eastern California? Probing the mechanics of dike formation, Journal of Geophysical Research, Vol. 109, Nr. B9, B09206, DOI:10.1029/2004JB002978, 2004.
PDF | Funding: NSF-EAR-019296, CIAR, NSERC

[5] Saar, M.O. and M. Manga, Depth dependence of permeability in the Oregon Cascades inferred from hydrogeologic, thermal, seismic, and magmatic modeling constraints, Journal of Geophysical Research, Vol. 109, Nr. B4, B04204, DOI:10.1029/2003JB002855, 2004.
PDF | Funding: DEAC03-76SF00098, Sloan Foundation

[4] Saar, M.O. and M. Manga, Seismicity induced by seasonal groundwater recharge at Mt. Hood, Oregon, Earth and Planetary Science Letters, Vol. 214, 605-618, 2003
PDF | Funding: DE-AC03-76SF00098, Sloan Foundation

[3] Saar, M.O. and M. Manga, Continuum percolation for randomly oriented soft-core prisms, Physical Review E, Vol. 65, 056131-1 to 6, 2002.
PDF | Funding: PRF, NSF-EAR-0003303

[2] Saar, M.O., M. Manga, K. Cashman, and S. Fremouw, Numerical models of the onset of yield strength in crystal-melt suspensions, Earth and Planetary Science Letters, Vol. 187, 367-379, 2001.
PDF | Funding: NSF-EAR-0003303, NSF-EAR-9902851, GSA, PRF

[1] Saar, M.O., and M. Manga, Permeability-porosity relationship in vesicular basalts, Geophysical Research Letters, Vol. 26, No. 1, 111-114, 1999.
PDF | Funding: NSF, PRF

Non-Refereed Publications           (theses, dissertations, reports)

• Randolph, J.B.,, Coupling geothermal energy capture with carbon dioxide sequestration in naturally permeable, porous geologic formations - a novel approach for expanding geothermal energy utilization, Ph.D. Dissertation, 211 pp., University of Minnesota - Minneapolis, 2011. Dissertation Adviser: M.O. Saar
  pdf-dissertation (19.8 MB)

• Appana, R., Aquifer and Shallow San Andreas Fault Permeabilities Inferred from Poroelastic Modeling of InSAR Measurements of Land Surface Deformation in Coachella Valley, California, M.S. thesis, 75 pp., University of Minnesota - Minneapolis, 2009. Thesis Adviser: M.O. Saar
  pdf-thesis

• Andrews, J.L., Coupled Heat and Helium Transport in Groundwater, M.S. thesis, 55 pp., University of Minnesota - Minneapolis, 2008. Thesis Adviser: M.O. Saar
  pdf-thesis (3 MB)

• Randolph, J.B., and M.O. Saar, Preliminary numerical modeling of CO2 injection and storage in deep saline aquifers: Current research, scenarios, and required data, in Potential capacity for geologic carbon sequestration in the Midcontinent Rift System in Minnesota, Thorleifson, L. H., ed., Minnesota Geological Survey Open File Report OFR-08-01, 138 p, 2008.
  pdf-report (7.4 MB)

• Andrews, J.L., S. Finsterle, and M.O. Saar, Mass- and Temperature-Dependent Diffusion Coefficients of Light Noble Gases for the TOUGH2-EOSN Module, Technical Report LBNL-62595, Lawrence Berkeley National Laboratory, Berkeley, CA, April 2007.
  pdf-report (284 KB)

• Andrews, J.L., and M.O. Saar, Coupling and decoupling of heat and helium transport in a geothermal reservoir, Proceedings, TOUGH Symposium 2006, Lawrence Berkeley National Laboratory, Berkeley, CA, 9 p., May 15-17, 2006.
  pdf-proceedings (867 KB)

• Saar, M.O., Geological fluid mechanics models at various scales, Ph.D. dissertation, 153 pp., University of California - Berkeley, 2003.
  pdf-dissertation (5.5 MB)

• Saar, M.O. and M. Manga, Intrinsic permeability, porosity, and microstructure of Holocene vesicular basaltic andesites in the Oregon Cascades, Oregon Geology, Vol. 61, No. 4, 87-88, 1999.
  pdf-journal (6.1 MB)

• Saar, M.O., The relationship between permeability, porosity and microstructure in vesicular basalts, M.S. thesis, 91 pp., University of Oregon, 1998.
  pdf-thesis (3 MB)

Abstracts           (for conference presentations as talks or posters)

• Luhmann*, A.J., K. Ding*, M.O. Saar, and W.E. Seyfried, Effects of small-scale chemical reactions between supercritical CO2 and arkosic sandstone on large-scale permeability fields: An experimental study with implications for geologic carbon sequestration, American Geophysical Union (AGU) Abstract, San Francisco Conference, 2011.

• Tutolo, B.M., W.E. Seyfried, and M.O. Saar, An Assessment of Thermodynamic Database Effects on Reactive Transport Models' Predictions of Permeability Fields: Insights from CO2/Brine Experiments, American Geophysical Union (AGU) Abstract, San Francisco Conference, 2011.

• Saar, M.O., and J.B. Randolph*, Multicomponent CO2-Brine Simulations of Fluid and Heat Transfer in Sedimentary-Basin Geothermal Systems: Expanding Geothermal Energy Opportunities, American Geophysical Union (AGU) Abstract, San Francisco Conference, 2011.

• Myre, J.M., M.D. Covington*, A.J. Luhmann*, and M.O. Saar, A GPGPU accelerated modeling environment for quantitatively characterizing karst systems, American Geophysical Union (AGU) Abstract, San Francisco Conference, 2011.

• Kong*, X., and M.O. Saar, Effects of Permeability Heterogeneity on Density-driven Convection during CO2 Dissolution Storage in Saline Aquifers, American Geophysical Union (AGU) Abstract, San Francisco Conference, 2011.

• Saar, M.O., Multiphase, multicomponent simulations and experiments of reactive flow, relevant for combining geologic CO2 sequestration with geothermal energy capture, Bulletin of the American Physical Society, 64th Annual Meeting of the APS Division of Fluid Dynamics, Volume 56, Number 18, 2011.

• Bordoloi, A.D., E.K. Longmire, Kong*, X., and M.O. Saar, Investigation of drop motion through circular orifices, Bulletin of the American Physical Society, 64th Annual Meeting of the APS Division of Fluid Dynamics, Volume 56, Number 18, 2011.

• Saar, M.O., Combining Geothermal Energy Capture with CO2 Sequestration, E3 Conference, Institute on the Environment (IonE), Initiatitive for Renewable Energy and the Environment (IREE), University of Minnesota, Minneapolis, Nov. 7, 2011.

• Randolph*, J.B., and M.O. Saar, Impact of reservoir permeability on the choice of subsurface geothermal heat exchange fluid: CO2 versus water and native brine, Geothermal Resources Council Annual Meeting, October 25, 2011.

• Myre, J., M.D. Covington*, A.J. Luhmann*, M.O. Saar, Accelerating the characterization of karst aquifer systems, Geological Society of America Abstracts with Programs, Vol. 43, No. 5, p. 289, 2011.

• Kong*, X., and M.O. Saar, An evaluation of relative permeability and the capillary pressure-saturation relationship in porous media lattice-Boltzmann methods, Geological Society of America (GSA), Abstracts with Programs, Vol. 43, No. 5, p. 80, 2011.

• Randolph*, J.B., and M.O. Saar, Carbon-dioxide plume geothermal (CPG) systems, an alternative engineered geothermal system (EGS): Net energy production potential compared to traditional water-based geothermal systems, Geological Society of America (GSA), Abstracts with Programs, Vol. 43, No. 5, p. 40, 2011.

• Tutolo, B.M., W.E. Seyfried Jr., M.O. Saar, A comparison between popular geochemical thermodynamic data sets and near-equilibrium experimental data, Geological Society of America (GSA), Abstracts with Programs, Vol. 43, No. 5, p. 108, 2011.

• Gottardi, R., P.-H. Kao*, C. Teyssier, and M.O. Saar, Effects of permeability structure, temperature field, and topography on oxygen isotope exchange between fluids and rocks in metamorphic core complexes, Geological Society of America (GSA), Abstracts with Programs, Vol. 43, No. 5, p. 78, 2011.

• Toot, R.K., B. Tutolo, J.B. Randolph, S.A. Alexander*, J. Nelson, M.O. Saar, A Comparison of the Wheatstone Bridge and Kelvin Connection for High-Precision Temperature Versus Depth, Geotherm, Measurements, Minnesota Groundwater Association Conference, May 2011.

• Saar, M.O., B. Adams, J. Bielicki, B. Janke, T. Kuehn, A. Mevison, C. Parker, M. Pollak, J.B. Randolph, A. Smale, S. Taff, and E. Wilson, Carbon dioxide plume geothermal (CPG) energy: Making electricity (and $$) from geologic sequestration of carbon dioxide, 10th Annual Conference on Carbon Capture and Sequestration, Pittsburgh, USA, May 2-5, 2011.

• Randolph, J.B., and M.O. Saar, Coupling geothermal energy capture with carbon dioxide sequestration in naturally permeable, porous geologic formations - a novel approach for expanding and enhancing geothermal energy utilization - and related fundamental topics regarding fluid and heat flow in porous and fractured geologic media, Doctoral Dissertation Fellowship Presentation, University of Minnesota, April 2011.

• Covington*, M.D., A.J. Luhmann, M.O. Saar, C.M. Wicks, and F. Gabrovsek, Dimensionless metrics that characterize the relationships between signals observed at springs and karst aquifer geometry, submitted to the 9th Conference on Limestone Hydrogeology, Besancon, France, 2011.

• Covington*, M.D., A.J. Luhmann, F. Gabrovsek, M.O. Saar, and C.M. Wicks, The relative importance of heat exchange mechanisms in karst conduits, submitted to EGU conference, Vienna, 2011.

• Walsh*, S.D.C. and M.O. Saar, Extensible lattice-Boltzmann simulations for general-purpose graphics-programming environments, Abstract submitted to Discrete Simulations of Fluid Dynamics (DSFD), Fargo, USA, 2011.

• Saar, M.O. and W.E. Seyfried, Jr., Toward development of parameters for permeability field variations due to fluid-rock reactions during geologic CO2 sequestration, submitted as American Geophysical Union (AGU) Abstract, San Francisco Conference, 2010.

• Randolph, J.B. and M.O. Saar, Carbon-dioxide plume geothermal (CPG) systems, an alternative engineered geothermal system (EGS) that does not require hydrofracturing: Comparison with traditional EGS regarding geologic reservoir heat energy extraction and potential for inducing seismicity, submitted as American Geophysical Union (AGU) Abstract, San Francisco Conference, 2010.

• Covington*, M.D., A. Banwell, J. Gulley, M.O. Saar, C.M. Wicks, I.C. Willis, and N. Arnold, Recharge-discharge relations for glacial conduit systems: a simple theoretical approach, submitted as American Geophysical Union (AGU) Abstract, San Francisco Conference, 2010.

• Myre, J.M., M.D. Covington*, S.D.C. Walsh*, M.O. Saar, A.J. Luhmann, and D.J. Lilja, A GPU powered investigation of the relationship between observed and modeled storm responses of a Minnesota cave stream, submitted as American Geophysical Union (AGU) Abstract, San Francisco Conference, 2010.

• Walsh*, S.D.C., M.O. Saar, and J.B. Randolph, Pore-scale lattice-Boltzmann fluid flow simulations in super-critical CO2/brine/rock systems using graphics processing units, submitted as American Geophysical Union (AGU) Abstract, San Francisco Conference, 2010.

• Covington*, M.D., A. Luhmann, C.M. Wicks, and M.O. Saar, Process length scales: a conceptual tool for karst hydrogeology, geomorphology, and hydroecology, submitted as GSA Abstract, 2010

• Randolph, J.B. and M.O. Saar, Using CO2 sequestration or enhanced oil and gas recovery to enhance geothermal resources, submitted as GSA Abstracts with Programs Vol. 42, No. 5, 2010.

• Nelson, J.M., M.O. Saar, and J.B. Randolph, Numerical simulation of supercritical CO2 plume evolution in the Illinois Basin and geothermal heat flow study of Minnesota, NSF-REU intern postern presentation, Department of Geology and Geophysics, University of Minnesota, August 12, 2010.

• Randolph, J.B. and M.O. Saar, Coupling carbon dioxide sequestration with geothermal energy capture in naturally permeable, porous geologic formations: Implications for CO2 sequestration, International Conference on Greenhouse Gas Technologies (GHGT-10) , Amsterdam, Netherlands, Abstract, Sep. 19-23, 2010.

• Covington*, M.D., A.J. Luhmann, C.M. Wicks, and M.O. Saar, Process length scales in karst, National Speleological Society Abstract, 2010.

• Covington*, M.D., J. Myre, A.J. Luhman, C.M. Wicks, and M.O. Saar, Comparison of observed and modeled storm responses in a Minnesota cave stream: Connections between geometry and response, GSA North-Central/South-Central, Abstract No: 171485, GSA Abstracts with Programs Vol. 42, No. 2, 2010.

• Covington*, M.D., A.J. Luhman, E.C. Alexander Jr., S.C. Alexander*, M.O. Saar, and C.M. Wicks, Thermal signals as a means of characterizing karst aquifers, Eos Trans. AGU, Fall Meet. Suppl., Abstract, 2009.

• Appana, R., and M.O. Saar, Aquifer and Shallow San Andreas Fault Permeabilities Inferred from Poroelastic Modeling of InSAR Measurements of Land Surface Deformation in Coachella Valley, California, Eos Trans. AGU, Fall Meet. Suppl., Abstract, 2009.

• Davis, M.A., S.D.C. Walsh*, M.O. Saar, J.J. Roberts, and A.A. Proussevitch, Using X-ray tomography as a tool to better quantify bubble network characteristics in volcanic tephra in three-dimensions, Eos Trans. AGU, Fall Meet. Suppl., Abstract, 2009.

• Saar, M.O., and J. Randolph, Coupling geothermal energy capture with carbon dioxide sequestration in permeable, porous geologic formations I: Overview and discussion, Eos Trans. AGU, Fall Meet. Suppl., Abstract, 2009.

• J. Randolph, and M. O. Saar, Coupling geothermal energy capture with carbon dioxide sequestration in permeable, porous geologic formations II: Numerical modeling and preliminary results, Eos Trans. AGU, Fall Meet. Suppl., Abstract, 2009.

• Walsh*, S.D.C., J. Myre, M.O. Saar, D.J. Lilja, Multi-GPU, Multi-core, Multi-phase Lattice-Boltzmann Simulations of Fluid Flow for the Geosciences, Eos Trans. AGU, Fall Meet. Suppl., Abstract, 2009.

• Saar, M.O., Hydraulic parameters and groundwater flow patterns in the Oregon Cascades, determined using numerical models that are constrained by diverse data sets, Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p. 176, 2009. INVITED TALK.

• Davis, M.A., S.D.C. Walsh*, M.O. Saar, and J.J. Roberts, What can 3D X-ray tomography of a pumice clast's bubble network and chemical composition tell us about volcanic eruption dynamics? Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p. 552, 2009.

• Saar, M.O. and J. Randolph, Coupling carbon dioxide sequestration with geothermal energy capture, Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p. 173, 2009.

• Covington*, M.D., C. Wicks, M.O. Saar, What's in a spring hydrograph?, Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p. 465, 2009.

• Randolph, J., and M.O. Saar, TOUGH2 modeling of coupled CO2 fluid flow and heat transfer in geothermal reservoirs with CO2 as working fluid, TOUGH Symposium 2009, Lawrence Berkeley National Laboratory, Berkeley, CA, Sep. 14-16, 2009.

• Walsh*, S.D.C., J. Myre, P. Bailey, M.O. Saar, and D.J. Lilja, GPU implementation of multiphase lattice-Boltzmann simulations, Path to Petascale: Adapting GEO/CHEM/ASTRO Applications for Accelerators and Accelerator Clusters, National Center for Supercomputing Application, Urbana, IL, April 2-3, 2009.

• Covington*, M.D., S.D.C. Walsh*, C.M. Wicks, and M.O. Saar, Modeling the Effects of Variable Recharge and Conduit Geometry on Flow Through Karstic Aquifers, Eos Trans. AGU, Fall Meet. Suppl., 2008.

• Saar, M.O., and S.D.C. Walsh*, Preferred Flow Path Development in Heterogeneous Porous Media During Reactive Flow: A Macro-Scale Lattice-Boltzmann Method, Eos Trans. AGU, Fall Meet. Suppl., 2008.

• Randolph, J.B., and M.O. Saar, Geologic CO2 sequestration in saline aquifers accounting for dual permeability/porosity environments, Eos Trans. AGU, Fall Meet. Suppl., 2008.

• Walsh*, S.D.C., M.O. Saar, P. Bailey, and D.J. Lilja, Cheaper and faster: How to have your cake and eat it too with GPU implementations of Earth Science simulations, Eos Trans. AGU, Fall Meet. Suppl., 2008.

• Davis, M.A., S.D.C. Walsh*, M.O. Saar, and J.J. Roberts, Magma Permeability Estimates From X-ray Tomography Scans Eos Trans. AGU, Fall Meet. Suppl., 2008.

• Anderson, K.J., S.D.C. Walsh*, and M.O. Saar, Methods of Permeability Calculation for Vesicular Materials, Eos Trans. AGU, Fall Meet. Suppl., Abstract V21C-0726, poster, 2007.

• Saar, M.O. and S.D.C. Walsh*, Simulations of Stiffness and Yield Stress Growth in Crystal Networks, Eos Trans. AGU, Fall Meet. Suppl., Abstract V13E-04, talk, 2007.

• Davis, M.A., S.D.C. Walsh*, M.O. Saar, and J.J. Roberts, Numerical Reconstructions of Volcanic Tephra: Using Tomography and Two-Point Correlation Functions to Determine Magma Permeability, Eos Trans. AGU, Fall Meet. Suppl., Abstract V12B-02, talk, 2007.

• Appana, R., and M.O. Saar, Determination of Aquifer and Fault Permeabilities by Studying the Poroelastic Response of Rocks Using InSAR in the Upper Coachella Valley Area, CA, USA, Eos Trans. AGU, Fall Meet. Suppl., Abstract H42B-08, talk, 2007.

• Randolph, J., M.O. Saar, C. Farrar, and S. Hurwitz, Using Transient Temperature-Depth Data to Constrain Groundwater Flow Velocities in Thermal Aquifers of Long Valley Caldera, California, Eos Trans. AGU, Fall Meet. Suppl., Abstract H33M-06, talk, 2007.

• Walsh*, S.D.C., H. Burwinkle, R. O'Grady, and M.O. Saar, Lattice-Boltzmann Simulations of Heterogeneous Porous Media: A Comparison Between Three Approaches, Eos Trans. AGU, Fall Meet. Suppl., Abstract H33H-1720, poster, 2007.

• Andrews, J.L., and M.O. Saar, Coupled Transport of Magma- and Mantle-Sourced Heat and Helium in Heterogeneous, Fractured Aquifers, Eos Trans. AGU, Fall Meet. Suppl., Abstract H33H-1711, poster, 2007.

• Walsh*, S.D.C, S.C Alexander*, and M.O. Saar, Lattice-Boltzmann models of speleogenic processes, GSA National Meeting - Denver, Geological Society of America, Abstracts with Programs, 2007.

• Anderson, K.J., and M.O. Saar, Determination of Macroscopic Material Properties Through Analyses of Microstructures in Volcano Conduit Magmas, University of Minnesota Undergraduate Symposium, April 18, 2007.

• Walsh*, S.D.C., and M.O. Saar, Insights Into Magmatic Properties From Multiphase Percolation Theory, Eos Trans. AGU, Fall Meet. Suppl., Abstract V34A-08, 2006.

• Andrews, J.L., M.O. Saar, and S. Finsterle, Heat and Helium Transport: The Effect of Subsurface Processes on Near-Surface Signals, Eos Trans. AGU, Fall Meet. Suppl., Abstract H43A-0477, 2006.

• Davis, M.A., S.D.C. Walsh*, K.J. Anderson, and M.O. Saar, Upscaling Pumice-Sized Bubble Networks to the Volcanic Conduit Scale: Implications for Magma Permeabilities and Volatile Degassing Rates, Eos Trans. AGU, Fall Meet. Suppl., Abstract V43A-1774, 2006.

• Saar, M.O., and J.L. Andrews, Groundwater as a Sampling Tool and Transfer Function for Magmatic Heat and Gases to Constrain Hot Spot Dynamics, Eos Trans. AGU, Fall Meet. Suppl., Abstract V51D-1701, 2006.

• Anderson, K.J., M.O. Saar, and M.A. Davis, Using Pore-Scale Analyses of Composite Materials to Determine Their Macroscopic Properties, Eos Trans. AGU, Fall Meet. Suppl., Abstract H53G-06, 2006.

• Hurwitz, S., C.D. Farrar, J. Randolph, and M.O. Saar, Anomalous Hydrothermal Activity in Hot Creek Gorge Area, Long Valley Caldera, California, USA, Eos Trans. AGU, Fall Meet. Suppl., Abstract V53A-1742, 2006.

• Andrews, J.L., and M.O. Saar, Modeling of helium and heat transport in an extensional basin using the noble gas module EOSN in TOUGH2, submitted to the TOUGH2 Symposium, Lawrence Berkeley National Laboratory, Berkeley, CA, May 15-17, 2006.

• Saar, M.O., Macroscopic bubble network formation in the presence of crystals, AGU National Meeting - San Francisco, Dec. 5-9, 2005.

• Saar, M.O., Helium isotopes as a natural tracer in volcanic and non-volcanic aquifers, MGWA fall conference, Nov. 18, 2005.

• Saar, M.O., Macroscopic porous medium reconstruction from micro-structure analyses, GSA National Meeting - Salt Lake City, Geological Society of America Abstracts with Programs, Vol. 37, No. 7, p. 0, 2005.

• Hirschmann, M.M., D.L. Whitney, and M.O. Saar, Fluids from surface to core: Eight years of the University of Minnesota - Twin Cities' summer REU program, GSA National Meeting - Salt Lake City, Geological Society of America Abstracts with Programs, Vol. 37, No. 7, p. 0, 2005.

• Hurwitz, S., M.O. Saar, L. Mastin, and J. Major, Volcano Hydrology, special session at the AGU Spring meeting in New Orleans, May 23-27, 2005.

• Thorleifson, H., and M.O. Saar, Groundwater sustainability: methods
  for analysis, mapping, monitoring, and management of regional systems,
  symposium at the GSA N-Central meeting in Minneapolis, MN, May 19-20, 2005.
  symposium abstract
  

• Christiansen, L.B., S. Hurwitz, M.O. Saar, and S.E. Ingebritsen, Seasonal Seismicity Associated with Western United States Volcanoes, AGU National Meeting - San Francisco, Dec. 13-17, 2004.

• Saar, M.O., Correcting noble gas data from volcanic terranes, 12th Annual Hubbert Quorum, USGS, Menlo Park, Dec. 12, 2004.

• Saar, M.O., M.C. Castro, C.M. Hall, M. Manga, and T.P. Rose, Mantle Contributions to Groundwater in the Oregon Cascades and Eastern Oregon Inferred from Helium Isotopes, GSA National Meeting - Denver, Vol. 36, Nr. 5, p. 469 (talk 202-6), Nov. 7-10, 2004.
  abstract

• Christiansen, L.B., S. Hurwitz, S.E. Ingebritsen, and M.O. Saar, Annual seismicity and groundwater recharge in the western United States, International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) General Assembly, Pucon, Chile, 2004

• Saar, M.O., and M. Manga, Rheology of magmas and transition in lava flow dynamics inferred from percolation theory, 25th IUGG Conference on Mathematical Geophysics, Columbia University, New York, NY, June 16-18, 2004
  extended pdf-abstract

• Saar, M.O., and M. Manga, Determination of a permeability-depth curve for the Oregon Cascades employing numerical, analytical, and statistical methods Eos Trans. AGU, Vol. 84, No. 46, Fall Meet. Suppl., Abstract H11G-0952, 2003.
  pdf-poster (570 KB)

• Jellinek M., M. Manga, and M.O. Saar, Did melting glaciers cause volcanic eruptions in eastern California? A natural probe of the mechanics of dike formation. Eos Trans. AGU, Vol. 84, No. 46, Fall Meet. Suppl., Abstract V52F-04, 2003.

• Saar, M.O., and M. Manga, Large-scale permeability models for the Cascade Arc, inferred from hydrologic, thermal, and seismic data, GSA Abstract with Programs, 201-4, p. 487, 2003

• Saar, M.O., and M. Manga, Fluid flow and the state of stress at Mt. Hood, Oregon, inferred from microseismicity induced by groundwater recharge, Geophysical Research Abstracts, EGS-AGU-EUG, Vol. 5, 2003

• Saar, M.O., and M. Manga, Seismicity Induced by Groundwater Recharge at Mt. Hood, Oregon, and its Implications for Hydrogeologic Properties, Eos Trans. AGU, Vol. 83, No. 47, p. 349, 2002.
  pdf-poster (1.1 MB)

• Saar, M.O., and M.Manga, The Temperature Distribution Beneath the Oregon Cascades with Implications for Groundwater and Heat Flow, Eos Trans. AGU, Vol. 81 (48), Fall Meet. Suppl., 2000.
  pdf-poster (1.9 MB)

• Saar, M.O., K. Cashman, S. Fremouw, and M. Manga, Network Formation in Crystal-Melt Suspensions at Low Volume Fractions, Geological Society of America Annual Meeting Abstracts with Programs, 2000

• Saar, M.O., K. Cashman, S. Fremouw, M. Burke, B. Rowe, and F. Rusli, Determining Onset of Minimum Yield Strength in Crystal-Melt Suspensions Using a Percolation Theory Approach, Eos Trans. AGU, Vol. 81, p. 421, 2000.

• Saar, M.O., and M. Manga, Relationship between intrinsic permeability, porosity, and microstructure of Holocene basalts in the Oregon Cascades, Oregon Academy of Sciences Annual Meeting, Proceedings, Vol. 35, p.45, 1999.

• Saar, M.O. and M. Manga, Permeability of vesicular basalt, Eos Trans., Vol. 78, p. 241, 1997.