Staff profiles

Mike StewartEmeritus Scientist

Stewart Mike 1829

Department

Environmental Chemistry

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Qualifications

  • MSc, Physics
  • PhD, Geology

Areas of expertise

  • Geochemist: Groundwater Dating
  • Geochemist: Hydrogeology
  • Geochemist: Streamflow Generation
  • Geochemist: Hydrothermal chemistry
  • Geochemist: Isotope Geochemistry

Major Publications

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  • Gallart, F.; Roig-Planasdemunt, M.; Stewart, M.K.; Llorens, P.; Morgenstern, U.; Stichler, W.; Pfister, P.; Latron, J. 2016. A GLUE-based uncertainty assessment framework for tritium-inferred transit time estimations under baseflow conditions, Hydrological Processes 30(25): p. 4741-4760. DOI: 10.1002/hyp.10991. p. 4741-4760
  • Duvert, C.; Stewart, M.K.; Cendon, D.I.; Raiber, M. 2016. Time-series of tritium, stable isotopes and chloride reveal short-term variations in groundwater contribution to a stream, Hydrology and Earth System Sciences 20(1): p. 257-277. DOI: 10.5194/hess-20-257-2016. p. 257-277
  • Gusyev, M.A.; Morgenstern, U.; Stewart, M.K.; Yamazaki, Y.; Kashiwaya, K.; Nishibara, T.; Kuribayashi, D.; Sawano, H.; Iwami, Y. 2016. Application of tritium in precipitation and baseflow in Japan : a case study of groundwater transit times and storage in Hokkaido watersheds, Hydrology and Earth System Sciences 20: p. 3043-3058. DOI: 10.5194/hess-2016-164. p. 3043-3058
  • Hale, V.C.; McDonnell, J.J.; Stewart, M.K.; Solomon, D.K.; Doolitte, J.; Ice, G.G.; Pack, R.T. 2016. Effect of bedrock permeability on stream base flow mean transit time scaling relationships : 2. Process study of storage and release, Water Resources Research 52(2): p. 1375-1397. DOI: 10.1002/2015WR017660. p. 1375-1397
  • Stewart, M.K.; Morgenstern, U. 2016. Importance of tritium-based transit times in hydrological systems, Wiley Interdisciplinary Reviews : Water 3(2): p. 145-154. DOI: 10.1002/wat2.1134. p. 145-154
  • Lamontagne, S.; Taylor, A.R.; Batlle-Aguilar, J.; Suckow, A.; Cook, P.G.; Smith, S.D.; Morgenstern, U.; Stewart, M.K. 2015. River infiltration to a subtropical alluvial aquifer inferred using multiple environmental tracers, Water Resources Research 51(6): p. 4532-4549. DOI: 10.1002/2014WR015663. p. 4532-4549
  • Seltzer, A.M.; Stute, M.; Morgenstern, U.; Stewart, M.K.; Schaefer, J.M. 2015. Mean annual temperature in New Zealand during the last glacial maximum derived from dissolved noble gases in groundwater, Earth and Planetary Science Letters 431: p. 206-216. DOI: 10.1016/j.epsl.2015.09.032. p. 206-216
  • Stewart, M.K. 2015. Promising new baseflow separation and recession analysis methods applied to streamflow at Glendhu Catchment, New Zealand, Hydrology and Earth System Sciences 19(6): p. 2587-2603. DOI: 10.5194/hess-19-2587-2015. p. 2587-2603
  • Gusyev, M.A.; Abrams, D.; Toews, M.W.; Morgenstern, U.; Stewart, M.K. 2014. A comparison of particle-tracking and solute transport methods for simulation of tritium concentrations and groundwater transit times in river water, Hydrology and Earth System Sciences 18(8): p. 3109-3119. DOI: 10.5194/hess-18-3109-2014. p. 3109-3119
  • Gusyev, M.A.; Toews, M.W.; Morgenstern, U.; Stewart, M.K.; White, P.A.; Daughney, C.J.; Hadfield, J. 2013. Calibration of a transient transport model to tritium data in streams and simulation of groundwater ages in the western Lake Taupo catchment, New Zealand, Hydrology and Earth System Sciences 17(3): p. 1217-1227. DOI: 10.5194/hess-17-1217-2013. p. 1217-1227
  • Stewart, M.K. 2012. A 40-year record of carbon-14 and tritium in the Christchurch groundwater system, New Zealand : dating of young samples with carbon-14, Journal of Hydrology 430-431: p. 50-68. DOI: 10.1016/j.jhydrol.2012.01.046. p. 50-68
  • Stewart, M.K.; Morgenstern, U.; Mcdonnell, J.J.; Pfister, L. 2012. The ‘hidden streamflow’ challenge in catchment hydrology: a call to action for stream water transit time analysis, Hydrological Processes 26(13): p. 2061-2066. DOI: 10.1002/hyp.9262. p. 2061-2066
  • Stewart, M.K.; Stevens, G.; Thomas, J.T.; van der Raaij, R.W.; Trompetter, V. 2011. Nitrate sources and residence times of groundwater in the Waimea Plains, Nelson, Journal of Hydrology, New Zealand 50(2): p. 313-338. p. 313-338
  • McDonnell, J.J.; McGuire, K.; Aggarwal, P.; Beven, K.J.; Biondi, D.; Destouni, G.; Dunn, S.; James, A.; Kirchner, J.; Kraft, P.; Lyon, S.; Maloszewski, P.; Newman, B.; Pfister, L.; Rinaldo, A.; Rodhe, A.; Sayama, T.; Seibert, J.; Solomon, K.; Soulsby, C.; 2010. How old is streamwater? : open questions in catchment transit time conceptualization, modelling and analysis, Hydrological Processes 24(12): p. 1745-1754. DOI: 10.1002/hyp.7796. p. 1745-1754
  • Morgenstern, U.; Stewart, M.K.; Stenger, R. 2010. Dating of streamwater using tritium in a post nuclear bomb pulse world : continuous variation of mean transit time with streamflow, Hydrology and Earth System Sciences 14(11): p. 2289-2301. DOI: 10.5194/hess-14-2289-2010. p. 2289-2301
  • Stewart, M.K.; Fahey, B.D. 2010. Runoff generating processes in adjacent tussock grassland and pine plantation catchments as indicated by mean transit time estimation using tritium, Hydrology and Earth System Sciences 14(6): p. 1021-1032. DOI: 10.5194/hess-14-1021-2010. p. 1021-1032
  • Stewart, M.K.; Morgenstern, U.; McDonnell, J.J. 2010. Truncation of stream residence time : how the use of stable isotopes has skewed our concept of streamwater age and origin, Hydrological Processes 24(12): p. 1646-1659. DOI: 10.1002/hyp.7576. p. 1646-1659
  • Stewart, M.K.; Thomas, J.T. 2008. A conceptual model of flow to the Waikoropupu Springs, NW Nelson, New Zealand, based on hydrometric and tracer (18O, Cl, 3H and CFC) evidence, Hydrology and Earth System Sciences 12(1): p. 1-19. p. 1-19
  • Whitehead, N.E.; Barry, B.J.; Ditchburn, R.G.; Morris, C.J.; Stewart, M.K. 2007. Systematics of radon at the Wairakei geothermal region, New Zealand, Journal of environmental radioactivity 92(1): p. 16-29. DOI: 10.1016/j.jenvrad.2006.09.003. p. 16-29
  • Stewart, M.K.; Mehlhorn, J.; Elliott, S. 2007. Hydrometric and natural tracer (oxygen-18, silica, tritium and sulphur hexafluoride) evidence for a dominant groundwater contribution to Pukemanga Stream, New Zealand, Hydrological Processes 21(24): p. 3340-3356. DOI: 10.1002/hyp.6557. p. 3340-3356
  • Close, M.E.; Lee, R.; Magesan, G.N.; Stewart, M.K.; Skuse, G.; Bekesi, G. 2005. Field study of pesticide leaching in a Himatangi sand (Manawatu) and in a Kiripaka bouldery clay loam (Northland). 1, Results, Australian journal of soil research 43(4): p. 457-469. Institute of Geological & Nuclear Sciences contribution 3490 p. 457-469
  • Stewart, M.K.; Thomas, J.T.; Norris, M.W.; Trompetter, V.J. 2004. Paleogroundwater in the Moutere Gravel Aquifers near Nelson, New Zealand, Radiocarbon 46(2): p. 517-529. Institute of Geological & Nuclear Sciences contribution 3196 p. 517-529
  • McGlynn, B.; McDonnell, J.; Stewart, M.K.; Seibert, J. 2003. On the relationships between catchment scale and streamwater mean residence time, Hydrological Processes 17(1): p. 175-181. Institute of Geological & Nuclear Sciences contribution 2697 p. 175-181
  • Stewart, M.K.; Trompetter, V.J.; van der Raaij, R.W. 2002. Age and source of Canterbury Plains groundwater Christchurch: Environment Canterbury. 46 p.
  • Stewart, M.K.; Thomas, J.T. 2002. Moutere Valley groundwater : nature and recharge from isotopes and chemistry Lower Hutt: Institute of Geological & Nuclear Sciences Limited. Institute of Geological & Nuclear Sciences science report 2002/22 26 p.
  • Christenson, B.W.; Mroczek, E.K.; Kennedy, B.M.; van Soest, M.C.; Stewart, M.K.; Lyon, G.L. 2002. Ohaaki reservoir chemistry : characteristics of an arc-type hydrothermal system in the Taupo Volcanic Zone, New Zealand, Journal of Volcanology and Geothermal Research 115(1-2): p. 53-82. DOI: 10.1016/S0377-0273(01)00309-2. Institute of Geological & Nuclear Sciences contribution 2482 p. 53-82
  • Stewart, M.K.; Morgenstern, U. 2001. Age and source of groundwater from isotope tracers, Groundwaters of New Zealand : p. 161-183. Institute of Geological & Nuclear Sciences contribution 2476 p. 161-183
  • McDonnell, J.; Rowe, L.; Stewart, M.K. 1999. A combined tracer-hydrometric approach to assess the effect of catchment scale on water flow path, source and age, Integrated methods in catchment hydrology : tracer, remote sensing and new hydrometric techniques : p. 265-273. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 1804 p. 265-273
  • Rosen, M.R.; Bright, J.; Carran, P.; Stewart, M.K.; Reeves, R.R. 1999. Estimating rainfall recharge and soil water residence times in Pukekohe, New Zealand, by combining geophysical, chemical and isotopic methods, Ground water 37(6): p. 836-844. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 1902 p. 836-844
  • Unnikrishna, P.V.; McDonnell, J.J.; Stewart, M.K. 1995. Soil water isotopic residence time modelling, Solute modelling in catchment systems : p. 237-260. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 673 p. 237-260
  • Simmons, S.F.; Stewart, M.K.; Robinson, B.W.; Glover, R.B. 1994. The chemical and isotopic compositions of thermal waters at Waimangu, New Zealand, Geothermics 23(5/6): p. 539-553. DOI: 10.1016/0375-6505(94)90018-3. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 515 p. 539-553
  • Giggenbach, W.F.; Sheppard, D.S.; Robinson, B.W.; Stewart, M.K.; Lyon, G.L. 1994. Geochemical structure and position of the Waiotapu Geothermal Field, New Zealand, Geothermics 23(5/6): p. 599-644. DOI: 10.1016/0375-6505(94)90022-1. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 347 p. 599-644
  • Stewart, M.K.; Lyon, G.L.; Robinson, B.W.; Glover, R.B. 1992. Fluid flow in the Rotorua geothermal field derived from isotopic and chemical data, Geothermics 21(1/2): p. 141-163. DOI: 10.1016/0375-6505(92)90074-J. [s.l.]: [s.n.]. Institute of Geological & Nuclear Sciences contribution 002 p. 141-163
  • McDonnell, J.J.; Owens, I.F.; Stewart, M.K. 1991. A case study of shallow flow paths in a steep zero-order basin, Water resources bulletin 27(4): p. 679-685. [s.l.]: [s.n.]. DSIR Physical Sciences reprint 132 p. 679-685
  • Stewart, M.K.; McDonnell, J.J. 1991. Modeling base flow soil water residence times from deuterium concentrations, Water Resources Research 27(10): p. 2681-2693. [s.l.]: [s.n.]. DSIR Physical Sciences reprint 93 p. 2681-2693
  • McDonnell, J.J.; Stewart, M.K.; Owens, I.F. 1991. Effect of catchment-scale subsurface mixing on stream isotopic response, Water Resources Research 27(12): p. 3065-3073. [s.l.]: [s.n.]. DSIR Physical Sciences reprint 110 p. 3065-3073
  • McDonnell, J.J.; Bonell, M.; Stewart, M.K.; Pearce, A.J. 1990. Deuterium variations in storm rainfall : implications for stream hydrograph separation, Water Resources Research 26(3): p. 455-458. [s.l.]: [s.n.]. p. 455-458
  • Hedenquist, J.W.; Goff, R.; Phillips, F.M.; Elmore, D.; Stewart, M.K. 1990. Groundwater dilution and residence times and constraints on chloride source, in the Mokai geothermal system, New Zealand, from chemical, stable isotope, tritium and 36Cl data, Journal of Geophysical Research. Solid Earth and Planets 95(B12): p. 19,365-19,375. DSIR Physical Sciences reprint 17 p. 19,365-19,375
  • Bonell, M.; Pearce, A.J.; Stewart, M.K. 1990. The identification of runoff-production mechanisms using environmental isotopes in a tussock grassland catchment, eastern Otago, New Zealand, Hydrological Processes 4(1): p. 15-34. [s.l.]: [s.n.]. p. 15-34
  • Taylor, C.B.; Wilson, D.D.; Brown, L.J.; Stewart, M.K.; Burden, R.J.; Brailsford, G.W. 1989. Sources and flow of north Canterbury Plains groundwater, New Zealand, Journal of Hydrology 106(3/4): p. 311-340. DOI: 10.1016/0022-1694(89)90078-4. [s.l.]: [s.n.]. p. 311-340
  • Pearce, A.J.; Stewart, M.K.; Sklash, M.G. 1986. Storm runoff generation in humid headwater catchments ; 1. Where does the water come from?, Water Resources Research 22(8): p. 1263-1272. [s.l.]: [s.n.]. p. 1263-1272
  • Sklash, M.G.; Stewart, M.K.; Pearce, A.J. 1986. Storm runoff generation in humid headwater catchments ; 2. A case study of hillslope and low-order stream response, Water Resources Research 22(8): p. 1273-1282. [s.l.]: [s.n.]. p. 1273-1282
  • Stewart, M.K.; Cox, M.A.; James, M.R.; Lyon, G.L. 1983. Deuterium in New Zealand rivers and streams Lower Hutt: DSIR, Institute of Nuclear Sciences. Institute of Nuclear Sciences INS-R-- 320 42 p
  • Henley, R.W.; Stewart, M.K. 1983. Chemical and isotopic changes in the hydrology of the Tauhara geothermal field due to exploitation at Wairakei, Journal of Volcanology and Geothermal Research 15(4): p. 285-314. DOI: 10.1016/0377-0273(83)90104-X. [s.l.]: [s.n.]. p. 285-314
  • Giggenbach, W.F.; Stewart, M.K. 1982. Processes controlling the isotopic composition of steam and water discharges from steam vents and steam-heated pools in geothermal areas, Geothermics 11(2): p. 71-80. DOI: 10.1016/0375-6505(82)90009-8. [s.l.]: [s.n.]. p. 71-80
  • Stewart, M.K.; Taylor, C.B. 1981. Environmental isotopes in New Zealand hydrology ; 1. Introduction. The role of oxygen-18, deuterium, and tritium in hydrology, New Zealand journal of science 24(3/4): p. 295-311. [s.l.]: [s.n.]. p. 295-311
  • Stewart, M.K.; Williams, P.W. 1981. Environmental isotopes in New Zealand hydrology ; 3. Isotope hydrology of the Waikoropupu Springs and Takaka River, northwest Nelson, New Zealand journal of science 24(3/4): p. 323-337. [s.l.]: [s.n.]. p. 323-337
  • Stewart, M.K.; Dicker, M.J.I.; Johnston, M.R. 1981. Environmental isotopes in New Zealand hydrology ; 4. Oxygen isotope variations in subsurface waters of the Waimea Plains, Nelson, New Zealand journal of science 24(3/4): p. 339-348. [s.l.]: [s.n.]. p. 339-348
  • Hulston, J.R.; Taylor, C.B.; Lyon, G.L.; Stewart, M.K.; Cox, M.A. 1981. Environmental isotopes in New Zealand hydrology ; 2. Standards, measurement techniques, and reporting of measurements for oxygen-18, deuterium, and tritium in water, New Zealand journal of science 24(3/4): 313-322. [s.l.]: [s.n.]. 313-322
  • Stewart, M.K. 1978. Stable isotopes in waters from the Wairakei geothermal area, New Zealand, Stable isotopes in the earth sciences : p. 113-119. [s.l.]: [s.n.]. DSIR Bulletin 220 p. 113-119
  • Stewart, M.K.; Friedman, I. 1975. Deuterium fractionation between aqueous salt solutions and water vapor, Journal of Geophysical Research 80(27): p. 3812-3818. [s.l.]: [s.n.]. p. 3812-3818
  • Stewart, M.K. 1975. Stable isotope fractionation due to evaporation and isotopic exchange of falling waterdrops : applications to atmospheric processes and evaporation of lakes, Journal of Geophysical Research 80(9): 1133-1146. 1133-1146
  • Stewart, M.K.; Hulston, J.R. 1975. Stable isotope ratios of volcanic steam from White Island, New Zealand, Bulletin volcanologique 39(1): p. 28-46. [s.l.]: [s.n.]. p. 28-46
  • Stewart, M.K. 1974. Hydrogen and oxygen isotope fractionation during crystallization of mirabilite and ice, Geochimica et Cosmochimica Acta 38(1): p. 167-172. [s.l.]: [s.n.]. p. 167-172
  • Bailey, I.H.; Macklin, W.C.; Hulston, J.R.; Stewart, M.K. 1969. On the isotopic composition of hailstones, Journal of the Atmospheric Sciences 26(4): 689-694. [s.l.]: [s.n.]. 689-694
  • Clarke, A.M.; Chirnside, A.; Hill, G.L.; Pope, G.; Stewart, M.K. 1967. Chronic dehydration and sodium depletion in patients with established ileostomies, Lancet (7519): 740-743. [s.l.]: [s.n.]. 740-743

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