Shemin Ge, Steven Henning, Megan Brown, Sarah Evans, Matt Weingarten (just graduated!), 2016
toby speaking
Toby Speaking at Benson 20
Billy Armstrong (newly minted Dr.), Toby Halamka, Chunli Su, Megan Brown, Sarah Evans (newly minted Dr.), Ruirui Zhao, Shemin Ge, Becky Simons, Steven Hennings
Katherine Pfeiffer and Christine Nims conducting geothermal modeling
toby and Christine 2017
Toby and Christine looking for groundwater in Boulder
Lyndsay Ball
Nate Bradley, Zhi Wen, Lyndsay Ball, and Jessica King in South Park
Nadine Reitman
Nadine Reitman in Needles, Utah 2012
Kenneth Babcock
Kenneth Babcock conducting slug tests


  • Claudia Corona, Ph.D Candidate
  • Kelleen Lanagan, Ph.D Candidate
  • Lauren Salberg, MS Candidate

Selected Publications

  • Ellsworth, W.L., D. Giardini, J. Townend, S. Ge, and T. Shimamoto, (2019). Triggering of the Pohang, Korea, Earthquake (Mw 5.5) by Enhanced Geothermal System Stimulation, Seismological Research Letters. https://doi.org/10.1785/0220190102

  • Lee, K.-K., W. L. Ellsworth, D. Giardini, J. Townend, S. Ge, T. Shimamoto, I.-W. Yeo, T.-S. Kang, J. Rhie, D.-H. Sheen, et al., (2019). Managing injection-induced seismic risks, Science 364, no. 6442, 730–732, doi: 10.1126/science.aax1878.

  • Mu, C., F. Zhang, X. Chen, S. Ge, M. Mu, L. Jia, Q. Wu, T. Zhang, (2019). Carbon and mercury export from the Arctic rivers and response to permafrost degradation, Water Research 161, 54-60

  • Brown, M.R. and S. Ge, (2018). Distinguishing Fluid Flow Path from Pore Pressure Diffusion for Induced Seismicity, Bulletin of the Seismological Society of America, doi.org/10.1785/0120180149

  • Evans, S.G., S. Ge, C. Voss, and N. Molotch, (2018). The role of frozen soil in groundwater discharge predictions for warming alpine watersheds, Water Resources Research, 54. https://doi.org/10.1002/2017WR022098.

  • Brown, M.R. and S. Ge, (2018). Small earthquakes matter in injection induced seismicity. Geophysical Research Letters, 45. https://doi.org/10.1029/2018GL077472

  • Reed, A.L., A.P. Novelli,  K.L. Doran,  S. Ge,  N. Lu,  J.S. McCartney, (2018). Solar District Heating with Underground Thermal Energy Storage: Pathways to Commercial Viability in North America, Renewable Energy, doi: 10.1016/j.renene.2018.03.019.

  • Başer, T.,  Y. Dong, A. M. Moradi, N. Lu, K. Smits, S. Ge, D. Tartakovsky, and J. S. McCartney, (2018). Role of Nonequilibrium Water Vapor Diffusion in Thermal Energy Storage Systems in the Vadose Zone, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, DOI:10.1061/(ASCE)GT.1943-5606.0001910

  • Evans, S.G. and S. Ge, (2017). Contrasting hydrogeologic responses to warming in permafrost and seasonally frozen ground hillslopes, Geophysical Research Letters, 44, 18031813, doi:10.1002/2016GL072009.

  • Brown M. R. M., S. Ge, A. F. Sheehan, and J. S. Nakai, (2017). Evaluating the Effectiveness of Induced Seismicity Mitigation: Numerical Modeling of Wastewater Injection near Greeley, Journal of Geophysical Research: Solid Earth, 122(8), pp 6569-6582, DOI: 10.1002/2017JB014456

  • Nakai J. S., M. Weingarten, A.F. Sheehan, S.L. Bilek, and S. Ge, (2017). A possible causative mechanism of Raton Basin, New Mexico and Colorado earthquakes using recent seismicity patterns and pore pressure modeling. Journal of Geophysical Research: Solid Earth, 122. doi.org/10.1002/2017JB014415

  • Liu C-Y, Chia Y, Chuang P-Y, Wang C-Y, Ge S, Teng M-H.  (2017). Streamflow Changes in the Vicinity of Seismogenic Fault After the 1999 Chi–Chi Earthquake. Pure and Applied Geophysics. DOI 10.1007/s00024-017-1670-3

  • Catolico, N., S. Ge, and J. McCartney, (2016). Numerical Modeling of a Soil-borehole Thermal Energy Storage System, Vadose Zone Journal, doi: 10.2136/vzj2015.05.0078.

  • Evans, S.G., S. Ge, and S. Liang, (2015). Analysis of groundwater flow in mountainous, headwater catchments with permafrost, Water Resource Research, 51, doi:10.1002/2015WR017732.

  • McGarr, A.,  B. Bekins, N. Burkardt, J. Dewey, P. Earle, W. Ellsworth, S. Ge, S. Hickman, A. Holland, E. Majer, J. Rubinstein, A. Sheehan, (2015). Coping with Earthquakes Induced by Fluid Injection, Science, 20 February 2015, Vol 347 Issue 6224.

  • Weingarten, M. S. Ge, J.W. Godt, B. A. Bekins, J. L. Rubinstein, (2015). High-rate injection is associated with the increase in U.S.mid-continent seismicity, Science, 19 June 348(6241), 1336-1340.

  • Ge, S. and S. Gorelick, (2015). Groundwater and Surface Water. In: Encyclopedia of Atmospheric Sciences, 2nd edition, Vol 3, pp. 209–216, Gerald R. North (editor-in-chief), John Pyle and Fuqing Zhang (editors).

  • Ball, L., J. Caine, and S. Ge, (2014). Controls on groundwater flow in a semiarid folded and faulted intermountain basin, Water Resources Research, 50, doi:10.1002/2013WR014451.

  • Weingarten, M. and S. Ge, (2014). Insights into water level response to seismic waves: A 24 year high-fidelity record of global seismicity at Devils Hole, Geophysical Research Letters, 41, doi:10.1002/2013GL058418.

  • Reitman, N., S. Ge, K. Mueller, (2014). Groundwater flow and its effect on salt dissolution in Gypsum Canyon watershed, Paradox Basin, southeast Utah, USA,Hydrogeology Journal,DOI 10.1007/s10040-014-1126-0

  • Keranen, K., M. Weingarten, G.A. Abers, B. Bekins, S. Ge, (2014). Sharp increase since 2008 induced by massive wastewater injection. Science. 25 JULY 20, VOL 345 ISSUE 6195

  • Ge, S. 2013, A book review for Permafrost Hydrology By Ming-ko Woo, Arctic, Antarctic, and Alpine Research, 45(4), pp. 615–617.

  • Post, V.E.A., J. Groen, H. Kooi, M. Person, S. Ge & W.M. Edmunds, 2013, Offshore fresh groundwater reserves as a global phenomenon, Nature,  74 (504), 5 December 2013, p71-78, doi:10.1038/nature12858

  • Yin, L., Y. Zhou, S. Ge, D. Wen, E. Zhang, J. Dong, (2013). Comparison and modification of methods for estimating evapotranspiration using diurnal groundwater level fluctuations in arid and semiarid regions, Journal of Hydrology, 496, p9-16.

  • Rowe, K., E. Screaton, and S. Ge, (2012). Coupled Fluid-Flow and Deformation Modeling of the Frontal Thrust Region of the Kumano Basin Transect, Japan: Implications for Fluid Pressures and Decollement, Geochemistry Geophysics Geosystems. doi:10.1029/2011GC003861

  • Liang, S. S. Ge, and L. Wan, (2012). Characteristics and causes of vegetation variation in the source regions of the Yellow River, China, International Journal of Remote Sensing, 33(5), 1529–1542

  • Ge., S., J. McKenzie, C.I. Voss, Q. Wu, 2011, Exchange of groundwater and surface‐water mediated by permafrost response to seasonal and long term air temperature variation, Geophysical Research Letters, 38, L14402, doi:10.1029/2011GL047911, L14402

  • Liang, S., S. Ge, L. Wan, and J. Zhang, 2010, Can climate change cause the Yellow River to dry up?, Water Resources Research, doi:10.1029/2009WR007971

  • Wang, X.-S., X.-W. Jiang, L. Wan, S. Ge, and H. Li, 2011, A new analytical solution of topography-driven flow in a drainage basin with depth-dependent anisotropy of permeability, Water Resources Research, doi:10.1029/2011WR010507.

  • Ge, S., 2011, Comment on "Evidence that the 2008 Mw 7.9 Wenchuan Earthquake Could Not Have Been Induced by the Zipingpu Reservoir" by Kai Deng, Shiyong Zhou, Rui Wang, Russell Robinson, Cuiping Zhao, and Wanzheng Cheng

  • Jiang, X.-W., Li Wan, M. B. Cardenas, S. Ge, X.-S. Wang, (2010). Simultaneous rejuvenation and aging of groundwater in basins due to  depth-decaying hydraulic conductivity and porosity, Geophysical Research Letters, VOL. 37, L05403, doi:10.1029/2010GL042387.

  • Ball, L., S. Ge, J. S. Caine, A. Revil, A. Jardani, 2010, Constraining fault-zone hydrogeology through integrated hydrological and geoelectrical analysis, Hydrogeology Journal doi: 10.1007/s10040-010-0587-z

  • Jiang, X.-W., L. Wan, X.‐S. Wang, S. Ge, and J. Liu, (2009). Effect of exponential decay in hydraulic conductivity with depth on regional groundwater flow, Geophysical Research Letter, 36, 24, doi:10.1029/2009GL041251

  • Ge, S., M. Liu, N. Lu, J. Godt, and G.Luo, 2009, Did the Zipingpu Reservoir Trigger the 2008 Wenchuan Earthquake? Geophysical Research Letter. 36, L20315, doi:10.1029/2009GL040349.

  • Ge, S., Q. B. Wu, N. Lu, G. L. Jiang, and L Ball (2008), Groundwater in the Tibet Plateau, western China, Geophysical Research Letter, 35, L18403, doi:10.1029/2008GL034809.

  • Kahn, K., S. Ge, J. Caine, A. Manning, 2008, Characterization of the Shallow Groundwater System in an Alpine Watershed: Handcart Gulch, Colorado, Hydrogeology Journal, 16(1), doi: 10.1007/s10040-007-0225-6,

  • Robertson, G., S. Ge, P. Cutillo, 2007, An investigation of regional tectonic strain on water levels in Devils Hole, Geophysical Research Letter, doi:10.1029/2007GL031630, vol 34, L23308.

  • Screaton, E.J. and S. Ge, 2007, Modeling of the effects of propagating thrust slip on pore pressures and implications for monitoring, Earth and Planetary Science Letters. 258, 454–464

  • Cutillo, P.A. and S. Ge, 2006, Analysis of strain-induced ground-water fluctuations at Devils Hole, Nevada, GeoFluids, 6, 1–15, doi: 10.1111/j.1468-8123.2006.00150.

  • Caine, J.S., Manning, A.H., Verplanck, P.L, Bove, D.J., Kahn, K.G.,  and Ge, S., 2006, Well Construction Information, Lithologic Logs,  Water Level Data, and Overview of Research in Handcart Gulch,  Colorado: An Alpine Watershed Affected by Metalliferous Hydrothermal  Alteration: U.S. Geological Survey, Open-File Report 2006-1189, 14  pp., < http://pubs.usgs.gov/of/2006/1189/ >.

  • Cutillo, P.A., S. Ge, and E. Screaton, 2006, Hydrodynamic response of subduction zones to seismic activity: A case study for the Costa Rica Margin", Tectonophysics. doi:10.1016/j.tecto.2006.02.017, 426, 167-187.

  • Ge, S. and E. Screaton, 2005, Modeling Seismically Induced Deformation and Fluid Flow in the Nankai Subduction Zone, Geophysical Research Letters, 32, L17301, doi:10.1029/2005GL023473, 2005

  • Yeo, I.W. and S. Ge, 2005, Applicable range of the Reynolds equation for fluid flow in a rock Fracture, Geosciences Journal, 9(4), 347 − 352.

  • Cutillo PA, E.J. Screaton, S. Ge, 2003, Three-dimensional numerical simulation of fluid flow and heat transport within the Barbados Ridge accretionary complex, Journal of  Geophysical Research, 108 (B12), 2555, doi:10.1029/2002JB002240

  • Marler, J. and S. Ge, 2003, The Permeability of the Elkhorn Fault Zone: A case study from South Park, Colorado, Journal of Ground Water, 41(3), 321-332.

  • Stover, C.S., S. Ge, and E. Screaton, 2003, A one-dimensional analytically-based approach for studying poroelastic and viscoplastic consolidation: application to Woodlark Basin, Papua New Guinea, Journal of Geophysical Research, 108(B9), 2448, doi: 10.1029/2001JB000466.

  • Ge, S., B. Bekins, J.Bredehoeft, K. Brown, E.E. Davis, S.M. Gorelick, P. Henry, H. Kooi, A.F. Moench, C. Ruppel, M. Sauter, E. Screaton, P.K. Swart, T. Tokunaga, C.I. Voss, and F.Whitaker, 2003 (April 22), Fluid Flow in Sub-seafloor Processes and Future Ocean Drilling, EOS, 84(16), 145-152.

  • Ge, S. 2002, Hydrology: Ground and Surface Water, in Encyclopedia of Atmospheric Science, edited by J.R. Holton, J. Pyle, and J.A. Curry, volume 3, Academic Press.

  • Yeo, I.W. and S. Ge, 2001, Solute dispersion in rock fractures by non-Darcian flow, Geophysical Research Letters, 28(20), 3983-3986.

  • Stover, C.S., S. Ge, P. Weimer, and B. McBride, 2001, The effects of salt evolution, structural development, and fault propagation on Late Mesozoic/Cenozoic oil migration: a two-dimensional fluid flow study along a megaregional profile in the northern Gulf of Mexico, Bulletin of American Association of Petroleum Geologists, 85(11), 1945-1966.

  • Stover, S.C., P. Weimer, S. Ge, 2001, The effects of allochthonous salt evolution and overpressure development on source rock thermal maturation: a two-dimensional transient study in the northern Gulf of Mexico Basin, Petroleum Geosciences, 7, 281-290.

  • Ge, S. and S.C. Stover, 2000, Hydrodynamic response to strike- and dip-slip faulting in a half-space, Journal of Geophysical Research, 105(B11), 25513 - 25524.

  • Screaton, E. and S. Ge, 2000, Anomalously high porosities in the proto-decollement zone of the Barbados accretionary complex: Do they indicate overpressures? Geophysical Research Letters, 27(13), 1993-1996.

  • Waite, M., S. Ge, and H. Spetzler, 1999, A new conceptual model for flow in discrete fractures: An experimental and numerical study, Journal of Geophysical Research, 104(B6), 13049 -13059.

  • Hinds, J., S. Ge, and C. Fridrich, 1999, Numerical modeling of perched water under Yucca Mountain, Nevada, Journal of Ground Water, 37(4), 498-504.

  • Ge, S., 1998, Estimation of groundwater velocity in fracture zones from well temperature profiles, Journal of Volcanology and Geothermal Research, 84, 93-101.

  • Waite, M., S. Ge, H. Spetzler, and D. Bahr, 1998, The effect of surface geometry on fracture permeability: a case study using a sinusoidal fracture, Geophysical Research Letters, 25(6), 813-816.

  • Ge, S., 1998, A new analytical treatment of airflow to inlet wells in soil vapor extraction systems, Ground Water Monitoring and Remediation, 18(2), 133-136.

  • Ge, S., 1997, A governing equation for fluid flow in rough fractures, Water Resources Research, 33(1), 53-61.

  • Fridrich, C., S. Ge, and J. Sass, 1998, On the mechanism of the large hydraulic gradient under Yucca Mountain, Nevada, U.S. Geological Survey Open-File Report, 98-119.

  • Screaton, E. and S. Ge, 1997, An Assessment of along-strike fluid flow and heat transport within Barbados accretionary complex: Results of Preliminary Modeling, Geophysical Research Letters, 24(23), 3085-3088.

  • Ge, S. and N. Lu, 1996, A semianalytical solution of one-dimensional advective-dispersive solute transport under an arbitrary concentration boundary condition, Journal of Ground Water, 34(3), 501-503.

  • Person, M., J. Raffensperger, S. Ge, and G. Garven, 1996, Basin-scale hydrological modeling, Review of Geophysics, 34(1), 61-78.

  • Ge, S. and M. Liao, 1996, An analytical solution for airflow to inlet wells in vapor extraction systems under leaky conditions, Water Resources Research, 32(3), 743-748.

  • Lu, N. and S. Ge, 1996, Effect of the horizontal heat and fluid flow on the vertical temperature distribution, Water Resources Research, 32(5), 1449-1453.

  • Ge, S. and G. Garven, 1994, A theoretical model for thrust-induced deep groundwater expulsion with application to the Canadian Rocky Mountains, Journal of Geophysical Research, 99(B7), 13851-13868.

  • Garven G., S. Ge,  M.A. Person, and D.A. Sverjensky, 1993, Genesis of stratabound ore deposits in the Midcontinent basins of North America, 1. role of regional groundwater flow, American Journal of Science, 293 (6), 497-568.

  • Ge, S. and G. Garven, 1992, Hydromechanical modeling of tectonically-driven groundwater flow with application to the Arkoma Foreland Basin, Journal of Geophysical Research, 97(B6), 9119-1944.

Hydrogeology Alumni

  • Megan Brown, PhD 2019, Northern Illinois University
  • Katherine Pfeiffer, MS, 2018 Student
  • Sarah G. Evans, PhD 2017, Appalachian State University
  • Matthew Weingarten, PhD 2016, San Diego State University
  • Steven Henning, MS 2016, Tetra Tech
  • Nora Catolico, MS 2015, National Ecological Observatory Network - NEON
  • Nadine Reitman, MS 2013, University of Colorado
  • Lyndsay Ball, PhD 2012, US Geological Survey
  • Jessica King, MS 2011.
  • Miori Yoshino, MS 2011. CH2M Hill
  • Brent Aigler, MS 2010.
  • Kenneth Babcock, MS 2007, ExxonMobil
  • Gregory Robertson, MS 2006, ExxonMobil
  • Paula Cutillo, PhD 2003. US National Park Service
  • Steve Shultz, 2003, Hazen and Sawyer
  • Stephani Tomusiak, MS 2001
  • Cheree Stover, PhD 2001. BP
  • John Marler, MS 2000. AEG
  • David Kinner, MS 1999, Western Carolina University
  • Miles Waite, PhD 1998, Waite-Heindel Environmental Management
  • Gordon McCurry, PhD 1997
  • Jennifer Hinds, MS 1997, University of Idaho
  • Andy Horn, MS 1997, Westwater Hydrology
  • Elizabeth Screaton, Postdoc, 1997, University of Florida