Sam Earman

Assistant Research Professor

CV

EDUCATION:

Ph.D., Earth and Environmental Science with dissertation in Hydrology,
      New Mexico Institute of Mining and Technology
M.S., Water Resources Management, University of Nevada, Las Vegas
B.A., Geology, Environmental Studies, and Anthropology, Macalester College

PROFESSIONAL INTERESTS:

Dr. Earman's research uses natural tracers to investigate hydrologic systems. He is interested in climate change impacts on groundwater and stream systems, groundwater recharge and movement in mountains, and methods of groundwater recharge estimation. Dr. Earman collaborates with researchers at the International Atomic Energy Agency, U. S. Geological Survey, New Mexico Instiute of Mining and Technology, the University of Wisconsin-Madison, Los Alamos National Laboratory, and the U.S. Fish and Wildlife Service.

RESEARCH AREAS:

Natural tracer applications in hydrology (including major ions, ¹⁸O, ²H, ¹⁴C, and ³H); basin-scale chemical evolution of groundwater; possible impacts of climate change on groundwater and surface-water resources; influence of deep-source CO₂ on mineral formation and weathering rates; groundwater recharge and movement in mountains; mountain-basin transfer of groundwater; and snowmelt contributions to groundwater recharge.

JOURNAL ARTICLES

Earman, S.; McPherson, B.J O L.; Phillips, F.M.; Ralser, S.; Herrin, J.M.; Broska, J.; 2008.

Tectonic influences on groundwater quality: Insight from complementary methods. Ground Water. v.46. pp.354-371.

Carroll, R.W.; Pohll, G.M.; Earman, S.; Hershey, R.L.; 2007.

Global optimization of a deuterium calibrated, discrete-state compartment model (DSCM): Application to the eastern Nevada Test Site. Journal of Hydrology. v.345. pp.237-253.

Earman, S.; Campbell, A.R.; Phillips, F.M.; Newman, B.D.; 2006.

Isotopic exchange between snow and atmospheric water vapor: Estimation of the snowmelt component of groundwater recharge in the southwestern United States. Journal of Geophysical Research. v.111.

Earman, S.; Phillips, F.M.; McPherson, B.J.O.L.; 2005.

The role of excess CO₂ in the formation of trona deposits. Applied Geochemistry. v.20. pp.2217-2232.

Earman, S.; Hershey, R.L.; 2004.

Water quality impacts from waste rock at a Carlin-type gold mine, Elko County, Nevada. Environmental Geology. v.8. s.45. pp.1043-1053.

CONFERENCE ABSTRACTS

Sawyer, F.E.; Thomas, J.M.; Earman, S.; Carroll, R.; 2007.

Coupled mixing-cell and mass balance flowpath models of the Whiter River Flow System, Nevada. National Ground Water Association 2007 Ground Water Summit. Albuquerque.

Earman, S.; Dettinger, M.D.; 2007.

Possible impacts of climate change on groundwater and surface water resources in the western U.S.A. Geological Society of America Annual Meeting. Denver, CO.

Decker, D L; Earman, S; Hershey, R L; Ryu, J H ; Garcia, E; Reimus, P; 2007.

Reactive transport of ¹⁴C through a carbonate aquifer: Implications for contaminant migration. Geological Society of America Annual Meeting. Denver.

Earman, S; Dettinger, M; 2007.

Climate influences on groundwater recharge: Implications for Western groundwater and surface water resources in the face of climate change. American Geophysical Union Fall Meeting. San Francisco.

Hershey, R.L.; Decker, D.L. ; Earman, S.; Ryu, J. ; Reimus, P.; Garcia, E.S. Jr.; 2007.

Laboratory experiments of carbon-14 uptake on calcite and dolomite. The 233rd American Chemical Society National Meeting. Chicago.

Earman, S.; 2007.

Potential impacts of climate change on groundwater recharge, with implications for groundwater and surface water resources. Fourth Annual California Climate Change Conference. California Energy Commission. Sacramento.

Carroll, R W H; Pohll, G M; Earman, S; Hershey, R L; 2007.

A comparison of groundwater fluxes computed with MODFLOW and a stable isotope mixing model: Application to the eastern Nevada Test Site and vicinity. American Geophysical Union Fall Meeting. San Francisco.

Dettinger, M.; Earman, S.; 2007.

Options for monitoring climate-driven recharge changes in Western Mountains. American Geophysical Union Fall Meeting. San Francisco.

Garcia, E.S., Jr.; Reimus, P.W.; Hershey, R.L.; Decker, D.L.; Earman, S.; 2007.

Laboratory experiments of carbon-14 uptake and release from calcite. The 233rd American Chemical Society National Meeting. Chicago.

Earman, S.; Dettinger, M.; 2006.

Possible impacts of warming-induced changes in groundwater recharge in western mountains on surface-water resources. American Geophysical Union Fall Meeting. San Francisco.

Earman, S.; Campbell, A.R.; Phillips, F.M.; Newman, B.D.; 2006.

Quantification of groundwater recharge from snowmelt in the southwestern USA using stable isotope mixing models. Geological Society of America Annual Meeting. Philadelphia.

Sawyer, F.E.; Thomas, J.M.; Earman, S.; Carroll, R.W.; 2006.

Coupled mixing-cell and mass balance flow path models of the White River flow system, Nevada. American Geophysical Union Fall Meeting. San Francisco.

Sawyer, F.E.; Thomas, J.M.; Earman, S.; 2006.

A coupled mixing-cell and geochemical flow path model of the White River flow system, Nevada, USA. National Ground Water Association 2006 National Ground Water Summit.

Earman, S.; Phillips, F.M.; McPherson, B.J.O.L.; 2005.

A revised model for the formation of trona deposits. Geological Society of America Annual Meeting.

Hershey, R.L.; Earman, S.; 2005.

Estimating groundwater recharge via a deuterium-calibrated discrete-state compartment model. American Geophysical Union Fall Meeting. San Francisco.

Earman, S.; Dettinger, M.; 2005.

How warming trends in western mountains may impact groundwater recharge, with implications for groundwater and surface water resources. MTNCLIM 2005. Consortium for Intergrated Climate Research in Western Mountains. Chico Hot Springs.

Thomas, J.M.; Deverel, S.; Decker, D.L.; Earman, S.; Mihevc, T.M.; Acheampong, S.; 2005.

Groundwater Evaporation From a Playa in Spring Valley, Nevada. American Geophysical Union Fall Meeting. San Francisco.

Earman, S.; Phillips, F.M.; 2005.

Using multiple natural tracers to investigate groundwater recharge and flow in mountains. American Geophysical Union Fall Meeting. San Francisco.

Earman, S.; Campbell, A.R.; Phillips, F.M.; 2004.

Where does groundwater in mountainous terrain come from? The importance of high-elevation precipitation and snow as contributors to mountain groundwater. Geological Society of America Annual Meeting. Denver.