USGS Professional Pages
Chief, NRP/EBContact Info
I currently serve as Branch Chief for the Eastern Branch of the USGS National Research Program in Reston. The scientists in my Branch conduct research in many fields and on many issues. These include numerical modeling of water flow and solute transport, environmental isotope forensics and characterization, groundwater dating, water and sediment contamination problems, nutrient cycling, ecological habitats, geomorphic processes, and the application of molecular and other techniques to the study of microbial processes. Beyond my Branch responsibilities, I have undertaken a wide diversity of assignments for the USGS. Recently, these have included the advancement of integrated environmental and ecological modeling across a range of organizations and disciplinary interests. My research efforts have focused on geochemical modeling and characterization of groundwater contamination, nuclear waste disposal, and groundwater dating studies. Earlier in my career, I also developed a thermodynamic framework to explain and predict how substitutional impurities affect the solubility and aqueous interactions of mineral phases, and how impurities are released and taken up by minerals. My academic background includes a B.A. (with a major in Geological Sciences) from Columbia College and Lamont Doherty Earth Observatory, an M.Sc. from University of Quebec in Montreal in isotopic environmental geochemistry and the cycling of atmospheric 14CO2, and a Ph.D. from the University of Waterloo, where my studies focused on groundwater studies and the thermodynamics of water-rock interactions.
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Publications (June 2015-1990):
Glynn, P.D. and Owen, T.W., eds., In Press (2015), Review of the USA National Phenology Network: U.S. Geological Survey Circular 1411, XX p., http://dx.doi.org/10.3133/cir1411
Glynn, P.D., 2015, Integrated Environmental Modelling: Human Decisions, Human Challenges. In Riddick, A.T., Kessler, H. and Giles, J.R.A. (eds), Integrated Environmental Modelling to Solve Real World Problems: Methods, Vision and Challenges. Geological Society of London, Special Publications, v. 408, http://doi.org/10.1144/SP408.9.
Glynn, P.D., 2014, W(h)ither the Oracle? Cognitive Biases and Other Human Challenges of Integrated Environmental Modeling. In International Environmental Modelling and Software Society (iEMSs), 7th Intl. Congress on Environmental Modelling and Software, San Diego, CA, USA, June 15-19, Daniel P. Ames, Nigel W.T. Quinn and Andrea E. Rizzoli (Eds.), link available after June 19, 2014: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_113.pdf
Pantea, M., Glynn P.D., Phelps, G., Bawden, G. and Soller, D., 2013, Three-dimensional visualization and modeling at the U.S. Geological Survey: examples and issues, p 69-73, in Thorleifson, L.H., Berg, R.C. and Russell, H.A.J. (conveners): Three-Dimensional Geological Mapping; Workshop Extended Abstracts, Geological society of Americs Annual Meeting, Denver, Colorado, October 26, 2013, Minnesota Geological Survey Open File Report OFR-13-2, 84 p. http://conservancy.umn.edu/bitstream/11299/159772/1/3dMapping_workshop_OFR_13_02.pdf
Plummer, L.N. and Glynn, P.D., 2013, Radiocarbon dating in groundwater systems. In Isotope Methods for Dating Old Groundwaters (Suckow, A, Aggarwal, P.K., Araguas-Araguas, L., eds.), Chapter 4, International Atomic Energy Agency, Vienna, p. 33-90. http://www-pub.iaea.org/books/iaeabooks/8880/Isotope-Methods-for-Dating-Old-Groundwater
Plummer, L.N., Sanford, W.E. and Glynn, P.D., 2013, Characterization and conceptualization of groundwater-flow systems. In Isotope Methods for Dating Old Groundwaters (Suckow, A, Aggarwal, P.K., Araguas-Araguas, L., eds.), Chapter 2, International Atomic Energy Agency, Vienna, p. 5-20.
Konikow, L.F., and Glynn, P.D., 2013, Modeling groundwater flow and quality. In Selinus, O. (ed.), 2nd edition, Essentials of Medical Geology: Springer-Verlag, p. 727-754. http://www.springer.com/earth+sciences+and+geography/geology/book/978-94-007-4374-8
Laniak, G.F., Olchin, G., Goodall, J., Voinov, A., Hill, M., Glynn, P., Whelan, G., Geller, G., Quinn, N., Blind, M., Peckham, S., Reaney, S., Gaber, N., Kennedy, R., Hughes, A., 2013, Integrated Environmental Modeling: A Vision and Roadmap for the Future: Environmental Modelling & Software: 39, p. 3-23. http://www.sciencedirect.com/science/article/pii/S1364815212002381
Moore, R., A. Hughes, N. Gaber, G. Geller, P. Glynn, G. Laniak, A. Voinov, and G. Whelan. International Summit on Integrated Environmental Modeling. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R/12/728, 2012. http://cfpub.epa.gov/si/si_public_file_download.cfm?p_download_id=509013
Glynn, P.D., 2012, Invited preface, Renewable Energy Applications for Freshwater Production, Bundschuh J. & Hoinkis J. (eds), CRC Press, p. xxvii-xxix. http://www.taylorandfrancis.com/books/details/9780415620895/
Glynn, P.D., and Brown, J.G., 2012, Integrating field observations and inverse and forward modeling: application at a site with acidic, heavy-metal-contaminated groundwater, in Geochemical Modeling of Groundwater, Vadose and Geothermal Systems, Bundschuh J. & Zilberbrand M. (eds), CRC Press, Chapter 8, p. 181-234. http://www.taylorandfrancis.com/books/details/9780415668101/
Glynn, P.D., 2012, Invited foreword, Geochemical Modeling of Groundwater, Vadose and Geothermal Systems, Bundschuh J. & Zilberbrand M. (eds), CRC Press, p. xix-xx. http://www.crcpress.com/ecommerce_product/book_series.jsf?series_id=1924
Glynn P.D., L. Jacobsen, G. Phelps, G. Bawden, V. Grauch, R. Orndorff, R. Winston, M. Fienen, V. Cross and J. Bratton, 2011, 3D/4D Modeling, Visualization and Information Frameworks: Current US Geological Survey Practice and Needs, p 33-38, in Russell, H.A.J., Berg, R.C., and Thorleifson, L.H. (compilers): Three-Dimensional Geological Mapping; Workshop Extended Abstracts, Minneapolis, Minnesota, October 8 2011, Geological Survey of Canada, Open File 6998, 80 p. doi:10.4095/289609, http://www.isgs.uiuc.edu/research/3DWorkshop/2011/workshop.shtml
Jacobsen, L.J., Glynn, P.D., Phelps, G.A., Orndorff, R.C., Bawden, G.W., and Grauch, V.J.S., 2011, U.S. Geological Survey: a synopsis of three-dimensional modeling, in Berg, R.C. , Mathers, S. J., Kessler, H., and D.A. Keefer (eds.): Synopsis of Current Three-dimensional Modeling in Geological Survey Organizations, Illinois State Geological Survey Circular 578, p. 69-79. http://library.isgs.uiuc.edu/Pubs/pdfs/circulars/c578.pdf
Glynn, P.D., Larsen, M.C., Greene, E.A., Buss, H.L., Clow, D.W., Hunt, R.J., Mast, M.A., Murphy, S.F., Peters, N.E., Sebestyen, S.D., Shanley, J.B., and Walker, J.F., 2009, Selected achievements, science directions, and new opportunities for the WEBB small watershed research program, in Webb R.M and Semmens, D.J. (eds.), Proceedings of the Third Interagency Conference on Research in the Watersheds: Planning for an Uncertain Future: Monitoring, Integration, and Adaptation. USGS Scientific Investigations Report 2009-5049. http://pubs.usgs.gov/sir/2009/5049/pdf/Glynn.pdf
Glynn, P.D., 2008, Future intrusion of oxygenated glacial meltwaters into the Fennoscandian shield: a possibility to consider in performance assessments for nuclear-waste disposal sites? Review of SKB's Safety Assessment SR-Can: Contributions in Support of SKI's and SSI's Review by External Consultants, Swedish Nuclear Power Inspectorate, SSI Report 2008:06/SKI Report 2008:16, chapter 6, 15p.
Glynn, P.D., and Plummer, L.N., 2005, Geochemistry and the understanding of ground-water systems: Hydrogeology Journal, v. 13, p. 263-287
Konikow, L.F., and Glynn, P.D., 2005, Modeling groundwater flow and quality, in Selinus, O., ed., Essentials of Medical Geology:
Curtis, G.P., Glynn, P.D., Stollenwerk, K.G., and Bartholomay, R.C., 2005, Actinide transport processes, in Rousseau, J.P., and others, see entry below.
Landa, E.R., Glynn, P.D., Stollenwerk, K.G., and Curtis, G.P., 2005, Distribution coefficients (Kds) and their application to transport analysis, in Rousseau, J.P., and others, see entry below.
Rousseau, J.P., Landa, E.R., Nimmo, J.R., Cecil, L.D., Knobel, L.L., Glynn, P.D., Kwicklis, E.M., Curtis, G.P., Stollenwerk, K.G., Anderson, S.R., Bartholomay, R.C., Bossong, C.R., and Orr, B.R., 2005, Review of the transport of selected radionuclides in the interim risk assessment for the Radioactive Waste Management Complex, Waste Area Group 7 Operable Unit 7-13/14, Idaho National Engineering and Environmental Laboratory, Idaho: U.S. Geological Survey Scientific Investigations Report 2005-5026, 283 p. in 2 volumes.
Nimmo, J.R., Rousseau, J.P., Perkins, K.S., Stollenwerk, K.G., Glynn, P.D., Bartholomay, R.C., and Knobel, L.L., 2004, Hydraulic and geochemical framework of the Idaho National Engineering and Environmental Laboratory vadose zone: Vadose Zone Journal, v. 3, p. 1-29.
Brown, J.G., and Glynn, P.D., 2003, Kinetic dissolution of carbonates and Mn oxides in acidic water: measurement of in situ rates and reactive transport modeling: Applied Geochemistry, v. 18, no. 8, p. 1225-1239.
Glynn, P.D., 2003, Modeling Np and Pu transport with a surface complexation model and spatially variant sorption capacities: implications for reactive transport modeling and performance assessments of nuclear waste disposal sites: Computer & Geosciences, in Special issue on Reactive Transport Modeling in the Geosciences, Browning, L., and Murphy, W.M., [eds.], v. 29, p. 331-349.
Glynn, P.D. 2001, Plutonium and neptunium transport: sorption modeling for performance assessment of nuclear waste disposal in the Fennoscandian Shield, in Radionuclide Transport Modelling: Current Status and Future Needs: Swedish Nuclear Power Inspectorate (SKI) Report 02-30.
Brown, J.G., Bassett, R., and Glynn, P.D., 2000, Reactive Transport of metal contaminants in alluvium - model comparison and column simulation, Applied Geochemistry, v. 15, p. 35-49.
Glynn, P.D., 2000, Solid-solution solubilities and thermodynamics: sulfates, carbonate and halides, in Sulfate Minerals-Crystallography, Geochemistry and Environmental Significance: Alpers, C.N., Jambor, J.L., and Nordstrom, D.K.,( eds), Reviews in Mineralogy and Geochemistry, v. 40, p. 481–511.
Glynn, P.D., 2000, Review of SR 97 performance assessment: Opinions on SKB's Safety Assessments SR 97 and SFL 3-5, Swedish Nuclear Power Inspectorate (SKI) Report 00:47, chapter 4, 14 p.
Glynn, P.D., 2000, Review of SFL 3-5 performance assessment: Opinions on SKB's Safety Assessments SR 97 and SFL 3-5, Swedish Nuclear Power Inspectorate (SKI) Report 00:47, chapter 16, 10 p.
Rousseau, J.P. et al., 2000, Review of the Transport of Selected Radionuclides in the Interim Risk Assessment for the Radioactive Waste Management Complex, Waste Area Group 7 Operable Unit 7-13/14, Idaho National Engineering and Environmental Laboratory, Idaho: U.S. Geological Survey Administrative Report prepared in cooperation with the Idaho Operations Office, U.S. Department of Energy, under Interagency Agreement DE-A107-97ID13556, 300+ pages.
Angeroth, C.E., Fuller, C.C., Glynn, P.D., and Harvey, J.W., 1999, Surface- and ground-water investigations in Pinal Creek Basin near Globe, Arizona: Proceedings of the 12th Annual Symposium, Arizona Hydrological Society, September 9-11, 1999, 2p.
Brown, J.G., Glynn, P.D., and Bassett, R.L., 1999, Geochemistry and reactive transport of metal contaminants in ground water, Pinal Creek Basin, Arizona: U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 1 of 3--Contamination from Hardrock Mining: U.S. Geological Survey Water-Resources Investigations Report 99-4018A, p. 141-153.
Crilley, D., Glynn, P.D. and Angeroth, C.E., 1999, Oxygen-18 and deuterium in precipitation: implications for ground-water recharge in Pinal Creek basin, AZ: Proceedings of the 12th Annual Symposium, Arizona Hydrological Society, September 9-11, 1999, 2p.
Emrén, A.T., Arthur, R.A., Glynn, P.D. and McMurry J., 1999, The modeler's influence on calculated solubilities for performance assessments at the Äspö Hard-Rock Laboratory, in Material Research Society, Symposium QQ, Scientific Basis for Nuclear Waste Management XXII, December 1998, Boston, paper QQ13.3, p. 559-566.
Glynn, P.D., Busenberg, E., and Brown, J.G., 1999, Use of chlorofluorocarbons, dissolved gases and water isotopes to characterize ground-water recharge in an aquifer contaminated by acidic, metal-laden wastewater: U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 1 of 3--Contamination from Hardrock Mining: U.S. Geological Survey Water-Resources Investigations Report 99-4018A, p. 155-162.
Glynn, P.D., Busenberg, E., and Brown, J.G., 1999, Use of chlorofluorocarbons, dissolved gases and water isotopes to characterize ground-water recharge in an aquifer contaminated by acidic metal-laden wastewater: Proceedings of the 12th Annual Symposium, Arizona Hydrological Society, September 9-11, 1999, 2 p.
Glynn, P.D., and Voss, C.I., 1999, Geochemical Characterization of Simpevarp Ground Waters near the Äspö Hard Rock Laboratory, Swedish Nuclear Power Inspectorate (SKI), SKI report 96:29, 210 p.
Glynn, P.D., Voss, C.I., and Provost, A.M., 1999, Deep penetration of oxygenated meltwaters from warm based ice sheets into the Fennoscandian Shield, in Use of Hydrological Information in testing groundwater flow models: Technical Summary and Proceedings of a Workshop organized by the NEA Coordinating Group on Site Evaluation and Design of Experiments for Radioactive Waste Disposal (SEDE) and by the Swedish Nuclear Fuel and Waste Management Company (SKB), Borgholm, Sweden, September 1-3, 1997, p. 201-241.
Brown, J.G., Bassett R. and Glynn, P.D., 1998, Analysis and simulation of reactive transport of metal contaminants in ground water in Pinal Creek Basin, Arizona, Journal of Hydrology, v. 209, p. 225-250.
Glynn, P.D., Busenberg, E., and Brown, J.G., 1998, Use of chlorofluorocarbons, dissolved gases and isotopes to characterize groundwater flow in an aquifer contaminated by acidic, metal-laden wastewater, in Isotope techniques in the Study of Environmental Change, Proceedings of a symposium, Vienna, April 14-18, 1997, International Atomic Energy Agency, p. 786-787.
Vrabel, J. and Glynn, P.D., 1998, User’s guide to PHRQCGRF - A computer program for graphical interpretation of PHREEQC geochemical transport simulations: U.S. Geological Survey Open-File Report 98-281, 30 p. http://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phrqcgrf/index.html.
Swedish Nuclear Power Inspectorate and consultants including Glynn, P.D., 1997, SITE-94: Deep Repository Performance Assessment Project, SKI Report 96:36 (2 vols.), 660 p.
Geier, J.E. (editor), Tirén, S., Dverstorp, B., and Glynn, P.D., 1996, Site-specific base data for the performance assessment (SITE-94): SKI Report 96:10, Swedish Nuclear Power Inspectorate,
Glynn, P.D., and Brown, J.G., 1996, Reactive transport modeling of acidic metal-contaminated ground water at a site with sparse spatial information, in Reactive Transport in Porous Media: General Principles and Application to Geochemical Processes: 1996, Steefel C.I., Lichtner P. and Oelkers E., [eds.], Mineralogical Society of America, Reviews in Mineralogy, v. 34, Chapter 9, p. 377-438.
Glynn, P.D., and Busenberg, E., 1996, Dissolved gas and chlorofluorocarbon content of ground waters in the Pinal Creek Basin, Arizona, in Morganwalp, D.W., and Aronson, D.A., [eds.], U.S. Geological Survey Toxic Substances Hydrology Program -- Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 1043-1054.
Glynn, P.D., and Busenberg, E., 1996, Unsaturated zone diffusion of carbon dioxide and oxygen in the Pinal Creek Basin, Arizona, in Morganwalp, D.W., and Aronson, D.A., [eds.], U.S. Geological Survey Toxic Substances Hydrology Program -- Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 1055-1064.
Revesz, K., Coplen, T.B., Baedecker, M.J., Glynn, P.D., and Hult, M., 1996, Investigation of methane production and consumption by use of stable isotopes, in Isotope in Water Resources Management: v. 1, Vienna, International Atomic Energy Agency, p. 381-387.
Brown, J.G., Bassett R.L., Glynn, P.D., and Parkhurst, D.L., 1995, Reactive transport of metal contaminants in ground water in Pinal Creek Basin, Arizona: Proceedings of the 8th Annual Symposium of the Arizona Hydrological Society, Tucson, Arizona, September 14-15, 1995, p. 104-105.
Revesz, K., Coplen, T.B., Baedecker, M.J., Glynn, P.D., and Hult, M., 1995, Methane production and consumption monitored by stable H and C isotope ratios at a crude oil spill site, Bemidji, Minnesota: Applied Geochemistry, v. 10, p. 505-516.
Plummer, L.N., Michel, R.L., Thurman, E.M., and Glynn, P.D., 1993, Environmental tracers for age-dating young ground water, in Alley, W.M., [ed.], Regional Ground-Water Quality: Chap. 11, Van Nostrand Reinhold, p. 255-294.
Glynn, P.D., 1992, Effect of impurities in gypsum on contaminant transport at
Glynn, P.D., Engesgaard, P., and Kipp, K.L., 1992, Use and limitations of two computer codes for simulating geochemical mass transport at the Pinal Creek toxic-waste site, in Mallard, G.E., and Aronson, D.A., [eds.], U.S. Geological Survey Toxic Substances Hydrology Program -- Proceedings of the technical meeting, Monterey, Calif, March 10-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 454-460.
Glynn, P.D., and Parkhurst, D.L., 1992, Modeling non-ideal solid-solution aqueous-solution reactions in mass-transfer computer codes, in Kharaka, Y.K., and Maest, A.S., [eds.], Proceedings of the 7th International Symposium on Water-Rock Interaction, A.A. Balkema Publishers, v. 1, p. 175-179.
Glynn, P.D., Plummer, L.N., Busenberg, E., and Reardon, E.J., 1992, Reply to a Comment by Dr. Stoessell on "Reaction paths and equilibrium end-points in solid-solution aqueous-solution systems": Geochimica et Cosmochimica Acta, v. 56, p. 2559-2572.
Glynn, P.D., and Reardon, E.J., 1992, Reply to Comment by Königsberger and Gamsjäger on "Solid-solution aqueous-solution equilibria: thermodyanmic theory and representation": American Journal of Science, v. 292, p. 215-225.
Plummer, L.N., Busenberg, E., Glynn, P.D., and Blum, A., 1992, Dissolution of strontianite-aragonite solid-solutions in non-stoichiometric aqueous solutions: Geochimica et Cosmochimica Acta, v. 56, p. 3045-3072.
Glynn, P.D., 1991, MBSSAS: A code for the computation of Margules parameters and equilibrium relations in binary solid-solution aqueous-solution systems: Computers and Geosciences, v. 17, p. 907-966.
Glynn, P.D., 1990, Modeling solid-solution reactions in low-temperature aqueous systems, in Chemical Modeling in Aqueous Systems II: American Chemical Society Symposium Series, v. 416, p. 74-86.
Glynn, P.D., and Reardon, E.J., 1990, Solid-solution aqueous-solution equilibria: thermodynamic theory and representation: American Journal of Science, v. 290, p. 164-201.
Glynn, P.D., Reardon, E.J., Plummer, L.N., and Busenberg, E., 1990, Reaction paths and equilibrium end-points in solid-solution aqueous-solution systems: Geochimica et Cosmochimica Acta, v. 54, p. 267-282.
My USGS Science Strategy AreasA National Hazard, Risk, and Resilience Assessment Program
Data Integration & Interoperability
Energy & Minerals for America's Future
A Water Census of the United States
Climate Variability & Change
The Role of Environment and Wildlife in Human Health
Understanding Ecosystems & Predicting Ecosystems Change
Some Current Interests
1) Integrated Environmental Modeling, Participatory Modeling, and Post-Normal Science (currently writing papers addressing the human dimensions of science, with a focus on their relations to the biogeosciences)
2) Citizen science and science education (currently writing a USGS guidebook for Citizen Science)
3) Laboratory systems (currently co-leading an effort to stand up a USGS Strategic Laboratory Committee)
4) 3D/4D visualization and information frameworks
5) Small watershed research and monitoring programs
12201 Sunrise Valley Dr
Reston, VA 20192
703-648-5832 - Fax
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