Megan M Smith

Deputy Group Leader, Subsurface Transport Group
Atmospheric, Earth, and Energy Division
Phone: +19254237970


  • Ph.D., Hydrology, Colorado School of Mines, 2010
  • M.Sc., Earth & Planetary Science, University of California at Berkeley, 2005
  • B.S., Geological Sciences, University of Oregon, 2002

Research Interests

My research is broadly focused around geochemical reactions in the subsurface and their effects on the evolution of fluid flow and permeability. Specifically, I'm interested in applications to geothermal and hydrothermal systems, subsurface carbon storage reservoirs, groundwater contaminant fate and transport issues, and tracer methods for such systems.

Honors and Awards

  • PLS/AEED Outstanding Research Poster Presentation, LLNL Postdoc Poster Symposium, 2011
  • CH2MHill Environmental Science and Engineering Outstanding Graduate Student Award, 2010
  • Herbert Memorial Scholarship, American Water Resources Association, 2007
  • McCone Graduate Student Fellowship, University of California, Berkeley, 2003-2004
  • Women in Physical Sciences Fellowship, University of Oregon, 2001-2002

Selected Publications

Lammers, K.L., M.M. Smith, and S.A. Carroll, Muscovite dissolution kinetics as a function of pH at elevated temperature, Chem. Geol., 466, 149-158, doi: 10.1016/j.chemgeo.2017.06.003, 2017.

Smith, M.M., Z. Dai, and S.A. Carroll, Illite dissolution kinetics from 100 to 280 °C and pH 3 to 9. Geochim. et Cosmochim. Acta, 209, 9-23, doi: 10.1016/j.gca.2017.04.005, 2017

Smith, M.M., Y. Hao, and S.A. Carroll, Development and calibration of a reactive transport model for carbonate reservoir porosity and permeability changes based on CO2 core-flood experiments. Int. J. Greenhouse Gas Contr. 57, 73-88, doi: 10.1016/j.ijggc.2016.12.004, 2017.

Bourcier, W.L., J.K. Stolaroff, M.M. Smith, and R.D. Aines, Achieving supercritical fluid CO2 pressures directly from thermal decomposition of solid sodium bicarbonate. Ener. Proc. 114, 2545-2551, doi: 10.1016/j.egypro.2017.03.1412, 2017.

Smith, M.M., and S.A. Carroll, Chlorite dissolution kinetics at pH 3-10 and temperature to 275 °C. Chem. Geol. 421, 55-64, doi: 10.1016/j.chemgeo.2015.11.022, 2016.

Walsh, S.D.C., M.M. Smith, S.A. Carroll, and D.A. Crandall, Non-invasive measurement of proppant pack deformation. Int. J. Rock Mech. & Min. Sci. 87, 39-47, doi: 10.1016/j.ijrmms.2016.05.005, 2016.

Hao, Y., M.M. Smith, H.E. Mason, and S.A. Carroll, Numerical study of the impact of CO2-fluid-rock interactions on porosity and permeability evolution in fractured carbonate rocks. Amer. Rock Mech. Assoc., ARMA 15-399, 2015.

Du Frane, W.L., L.A. Stern, S. Constable, K.A. Weitemeyer, M.M. Smith, and J.J. Roberts, Electrical properties of methan hydrate + sediment mixtures. J. Geophys. Res., 120, 4773-4783, doi: 10.1002/2015JB011940, 2015.

Smith, M.M., Y. Hao, H.E. Mason, and S.A. Carroll, Experiments and modeling of variably permeable carbonate reservoir samples in contact with CO2-acidified brines. Ener. Proc. 63, 3126-3137, doi: 10.1016/j.egypro.2014.11.337, 2014 

Rau, G.H., S.A. Carroll, W.L. Bourcier, M.J. Singleton, M.M. Smith, and R.D. Aines, Direct electrolytic dissolution of silicate minerals for air CO2 mitigation and carbon-negative H2 production. Proc. Nat. Acad. Sci. 110, 10095-10100, doi: 10.1073/pnas.1222358110, 2013.

Smith, M.M., Y. Sholokhova, Y. Hao, and S.A. Carroll, CO2-induced dissolution of low permeability carbonates. Part I: characterization and experiments. Adv. Water. Res. 62, 370-387. doi: 10.1016/j.advwatres.2013.09.008, 2013 

Hao, Y., M.M. Smith, Y. Sholokhova, Y. Hao, and S.A. Carroll, CO2-induced dissolution of low permeability carbonates. Part II: numerical modeling. Adv. Water. Res. 62, 388-408. doi:10.1016/j.advwatres.2013.09.009, 2013.

Walsh, S.D.C., M.M. Smith, and S.A. Carroll, Decoupling reaction and deformation in natural fractures with X-ray micro-tomography and particle image velocimetry. Amer. Rock Mech. Assoc., ARMA 13-445, 2013. 

Smith, M.M., T.J. Wolery, and S.A. Carroll, Kinetics of chlorite dissolution at elevated temperatures and CO2conditions. Chem. Geol. 347, 1-8, doi: 10.1016/j.chemgeo.2013.02.017, 2013.

Smith, M.M., Y. Sholokhova, Y. Hao, and S.A. Carroll, Evaporite caprock integrity: an experimental study of reactive mineralogy and pore-scale heterogeneity during brine-CO2 exposure, Environ. Sci. & Technol., 47, 262-268, doi: 10.1021/es3012723, 2013.

Carroll, S.A., Y. Hao, M.M. Smith, and Y. Sholokhova, Development of scaling parameters to describe CO2-rock interaction within Weyburn-Midale carbonate flow units, Int. J. Greenh. Gas Control, doi: 10.1016/j.ijggc.2012.12.026, accepted 2012.

Silva, J.A.K., M.M. Smith, J. Munakata-Marr, and J.E. McCray, The effect of system variables on in situ sweep-efficiency improvements via viscosity modification, J. Contam. Hydrol., 136-137, 117-130, doi: 10.1016/j.jconhyd.2012.05.006, 2012.

Smith, M.M., J.A.K. Silva, J. Munakata-Marr, and J.E. McCray, Compatibility of polymers and chemical oxidants for enhanced groundwater remediation, Environ. Sci. & Technol., 42, 9296-9301, doi: 10.1021/es800757, 2008.