Associate Professor Earl Bardsley

General You can get an indication of my interests and thus possible PhD topics from the list below of of publications, conference presentations, and previous theses supervised. I’ve tried to avoid specialisation in any one field in hydrology, as indicated by the diversity of my current PhD research student projects. If you send a CV, please include an abstract of your MSc (or equivalent) research thesis, along with the titles of courses you have passed, and any publications. If you have not completed a previous research thesis, then you wouldn’t normally be considered. For overseas potential PhD applicants The good news is that full-time overseas PhD students are presently (2013) charged the same fees as New Zealand nationals. The current PhD full-time cost (PhD fees plus various university charges) at the University of Waikato is only ≈ $NZ 6,000 per year. However, there is limited overseas-student PhD scholarship funding available at Waikato University. Also, New Zealand living costs are quite high – although our physical environment is rather nice. The Waikato overseas PhD scholarships favour overseas students who have already been enrolled here for 6 months and you may or may not wish to take the considerable risk of coming here on the assumption you would get one of the scholarships in your first year. You can do a web search on University of Waikato International Doctoral Scholarship to get more info, and also search on University of Waikato International Application. Note that the immigration application process may take some time, which can vary with the country of origin. For further information about getting to New Zealand for PhD study at Waikato, living costs, accommodation etc, please contact the University of Waikato. With respect to those who do not have English as their native language, we do have an option of waiving the English language requirement. None of my current international PhD students met the PhD English language requirement. But what is required (obviously) is that we can converse OK and you can write reasonable English for scientific work. You would also be expected make some effort to improve your speaking, listening, and scientific writing skills.

Current PhD thesis students Ali Shokri Ali came to the University of Waikato from Iran and his thesis has focus on numerical groundwater modelling at the saturated-unsaturated interface at an industrial site. Ali is part-funded by timber processing industries and has recently taken up a half-time permanent position with Lincoln Agritech (Hamilton). Shokri, A., Bardsley, W.E. An enhancement of the Hooghout drain-spacing equation. (under review)

Varvara Vetrova Varvara came to the University of Waikato from Irkutsk (Siberia) to work on her thesis project developing monthly and seasonal forecasting of river inflows to the southern South Island hydro lakes. She is supported by Meridian Energy Ltd and a PhD Fellowship from the New Zealand Ministry of Business, Innovation and Employment. Vetrova, V.V., Bardsley, W.E. (2012) A significance test for data-sparse zones in scatter plots. Hydrology and Earth System Sciences, v. 16, p.1255-1257.

Vetrova, V.V., Bardsley, W.E., (2012). Toward seasonal forecasting in the Upper Waitaki catchment. Presented to the New Zealand Hydrological Society Conference, Nelson, November, 2012. Bardsley, W.E., Liu, S., Vetrova, V.V., (2012). An alternative approach to formulating and calibrating hydrological models. Presented to the AOGS-AGU (WPGM) Joint Assembly, Singapore, August, 2012. Vetrova, V.V., Bardsley, W.E., (2012). An approach to seasonal inflow forecasting based on empirical mode decomposition. Presented to the AOGS-AGU (WPGM) Joint Assembly, Singapore, August, 2012 Vetrova, V.V., Bardsley, W.E., (2012). Wavelet analysis of hydro lake inflows. Poster presented to the AOGS-AGU (WPGM) Joint Assembly, Singapore, August, 2012. Vetrova, V.V., Bardsley, W.E., (2011). A nonlinear analysis of hydro lake inflows in the Waitaki catchment. Presented to the New Zealand Hydrological Society Conference, Wellington, December, 2011. Conference abstracts p.183-184.

Mohammed Majeed Originally from Iraq, Mohammed is now a permanent New Zealand resident supported by a University of Waikato PhD student scholarship. Mohammed’s thesis is concerned with developing a simulation model of a possible large pumped storage scheme in the South Island to provide a hydro power buffer during dry years, and also increased summer irrigation water. Mohammed’s supervisory panel includes a representative from Contact Energy Ltd, a major New Zealand power company. Majeed, K.M., Bardsley, W.E., (2012). Prospects for pumped storage in Central Otago. Presented to the New Zealand Hydrological Society Conference, Nelson, November, 2012. Majeed, K.M., Bardsley, W.E., (2011). Toward evaluation of hydraulic cycle efficiency of a possible seasonal pumped storage scheme at Onslow, New Zealand. Poster presented to the New Zealand Hydrological Society Conference, Wellington, December, 2011.

Bevan Jenkins Bevan is developing probability distribution models to characterise regional baseflow recessions, with application of hazard function characterisation of recession curves. Bevan works on his thesis half-time and is employed by the Waikato Regional Council in Hamilton. Jenkins, B.R., Bardsley, W.E., (2012). Fitting a doubly censored three parameter Weibull distribution to recession curves. Presented to the New Zealand Hydrological Society Conference, Nelson, November, 2012.

Rogier Westerhoff (W.E. Bardsley second supervisor) Rogier is a recent arrival (May 2013) from Holland and his PhD is on the use of satellite remote sensing for making groundwater inferences.

Amir Emami (W.E. Bardsley second supervisor) Amir came to the University of Waikato from Iran and his PhD thesis work includes evaluating the role of beach groundwater in beach sand erosion.

There is potential for PhD research on number of themes, including:

Application of a formalism for simplified hydrological models.

Further development of event rain gauges and constructing maps for analysis of the fine structure of spatial rainfall (Journal of Hydrology, v.216, p.137-144).

Geological weighing lysimeters for surface water budgets. Journal of Hydrology, v.335, p.240-246.

Evaluation of its use of the New Zealand lightning base for hydrological information (GIS skills required).

Tracer models and applications for surface and subsurface flows, with particular reference to use of heavy water.

The correlation structure of annual hydrographs and annual flood models with heavy right tails.

Multivariate hydrological data simulation while preserving recorded data characteristics and with climate change scenarios: New Zealand and (possibly) China.

Rain radar information for flood forecasting.

Potential for cloud seeding in the Southern Alps: meteorological characteristics and enhanced flow verification in the hydrograph.

Evaluation of effluent injection wells along selected New Zealand coastal locations to enhance groundwater supply.

Developing models of regional evaporation from rainfall and climatic characteristics.

Probability approaches to numerical groundwater modelling.

Detecting signals of climate change in hydrograph records.

The above would need refinements and formulation into specific thesis research questions. All the above projects are unfunded.

Completed student theses and research reports

Hopkirk, C. Forecasting Lake Waikaremoana water availability for hydro power. (M.Sc.) Johnstone, S. Forecasting seasonal inflows into Lake Taupo, North Island, New Zealand. (BSc. Hons). Vavae, H. A simple forecasting scheme for predicting low rainfalls in Funafuti, Tuvalu. (M.Sc.) Jelley, N. Forecasting seasonal drawdowns in Whangamata town supply wells. (M.Sc.) Purdie, J. Seasonal inflow forecasting of New Zealand’s South Island hydro lakes. (PhD.) Nalder, G. Submerged thin plate weirs with unequal upstream and downstream beds. (M.Phil.) Bear, S Hydrological evaluation of pumped storage in the Onslow-Manorburn basin. (M.Sc,) Kerr, J Assessing the hydrological implications of the Wilsonville quarry expansion at Hikurangi, Northland. (M.Sc). Bigham, A.D. A feasibility study on deep well injection as a means of disposing Kawerau effluent. (M.Sc.) Brown, E.J. Evaluating the potential of constructed groundwater systems to improve the water supply operations of Auckland City, New Zealand. (Ph.D.) Campbell, A.B. Efficiency evaluation for the Waitaki hydropower scheme. (M.Sc) Harman, J.J. Drought hazard and risk within the Waikato region. (M.Sc.) Whatnall, N.J. Groundwater flow dynamics beneath a wastewater irrigation site, Hautapu, Cambridge. (M.Sc.) Brown, N.Z., The Wheao power scheme: toward operational and predictive techniques for optimal water resource use. (M.Sc.) Brown, J.E. Development of the stillstand rain guage for recording rainfall stratigraphy. (M.Sc.) Peacock, A.J. Water and nitrogen budgets of a wetland within the Rotorua land treatment system, New Zealand. (M.Sc.) Choudhry, A.C. Surface hydrologic modeling and GIS: a case study of the Kaimai hydropower project catchment, New Zealand. (Ph.D). Chapman, M.G., Investigation of the dynamics of the Waiwera geothermal groundwater system, New Zealand. (M.Sc.) Henderson, S.,. Evaluating models for aquifer storage change. (M.Sc.) Charteris, S.A., An investigation into improving Lake Rotoroa water quality using Waikato River water in a pump-storage scheme. (Dip. App. Sci.)

Knowles, S.F., Groundwater slope drainage and nitrate concentrations under land treatment, Whakarewarewa Forest, Rotorua. (M.Sc.) Ward, S.G., An investigation of nitrate in groundwater adjacent to Bardowie Farm, Hautapu, Cambridge, New Zealand. (M.Sc.) Hadfield, J.C., A groundwater contaminant tracer study at Waitahanui, Taupo. (M.Phil.) Pollard, S., Head-constrained aquifer treatment of effluent and lake water. (B.Sc. Tech. report) Jackson, M., Aspects of groundwater at Pauanui sand spit, Coromandel (M.Sc.) Keyte, M.J., Droughts in Northland (M.Sc. REP) Pang, L., Mining effluent contamination of groundwater in the Te Aroha area (M.Sc.) Crowcroft, G.M., A groundwater investigation of the Mangaonua/Mangaone catchment (M.Sc.) McFarland, H.R.,. Overview of the water quality in the Piako/Waitoa catchment (B.Sc.Tech. Industry Report) Pritchard, L.J., New Zealand hydrology: a review (M.Sc.) Eynon-Richards, N.A., Flood hydrology and recent river channel alteration of the sand-gravel bedded lower Whakatane River (M.Sc.) Bell, A.R., The hydrogeochemistry of ignimbrites in the Kinleith/Tokoroa region, New Zealand (M.Sc.) Maggs, G.R., Land and water use in the northern Waikato area (Dip. App. Sci.) Hadfield, J.C., Aspects of Kaawa formation hydrogeology: A preliminary evaluation of a steady-state finite element groundwater model ( Dip. App. Sci.) Tracey, B.K., Geohydrological investigations in the Kinleith-Tokoroa region (M.Sc.) Petch, R.A., Studies of source area hydrology under indigenous forest and pastoral agriculture in the Hapuakohe Range, North Island, New Zealand (D.Phil.) Dell, P.M., The effect of afforestation on the water resources of the Mamaku Plateau region. (M.Sc.)

Journal Papers (Hydrology) Bardsley,W.E., Liu, S., Johnstone, S.H. , Purdie, J., Fukuda, K. (in preparation) A lasso approach to formulation and simplification of hydrological models. Bardsley, W.E. (2013) A goodness of fit measure related to r2 for model performance assessment. Hydrological Processes. Vetrova, V.V., Bardsley, W.E. (2012) A significance test for data-sparse zones in scatter plots. Hydrology and Earth System Sciences, v. 16, p.1255-1257. Purdie J., Bardsley, W.E. (2010) Seasonal prediction of lake inflows and rainfall in a hydro-electricity catchment, Waitaki River, New Zealand. International Journal of Climatology, v. 30, p.372-389. Bardsley, W.E., Vavae, H. (2009) A simple graphical technique for conditional long range forecasting of below-average rainfall periods in the Tuvalu Islands, Western Pacific. Natural Resources Research. v.18, p.277-283. DOI: 10.1007/s11053-009-9104-2 Bardsley, W.E., Purdie, J. (2007) An invalidation test for predictive models. Journal of Hydrology, v.338, p.57-62. Bardsley, W.E., Campbell, D.I. (2007) An expression for land surface water storage monitoring using a two-formation geological weighing lysimeter. Journal of Hydrology, v.335, p.240-246. Bardsley, W.E., (2007) Note on y-truncation: A simple approach to generating bounded distributions for environmental applications. Advances in Water Resources, v.30, p.113-117. Sophocleous, M., Bardsley, W.E. and Healy, J., (2006) A rainfall loading response recorded at 300 meters depth: Implications for geological weighing lysimeters. Journal of Hydrology, v.319, p.237-244. Bardsley, W.E., (2005) Note on the pumped storage potential of the Onslow-Manorburn depression, New Zealand. Journal of Hydrology (NZ), v.44, p.131-135. Bardsley, W.E., (2003) Temporal moments of a tracer pulse in a perfectly parallel flow system. Advances in Water Resources v.26, p.599-607. Brown, E.J. and Bardsley, W.E., (2002) A model-based evaluation of horizontal wells for improving the functionality of an urban reservoir system. Natural Resources Research, v.11, p.197-206. Bardsley, W.E. and Choudhry, S., (2000) An approach to estimating hydro power system income gain from computerized water scheduling. Natural Resources Research, v.9 p.215-222. Bardsley, W.E. and Campbell, D.I., (2000) Natural geological weighing lysimeters: calibration tools for satellite and ground surface gravity monitoring of subsurface water mass change? Natural Resources Research, v.9 p.147-156. Tomer, M.D., Knowles, S.F., Fenton, J.A., Bardsley, W.E. and Oliver, G.R. (1999) Soil water, ground water, and wetland seepage within an effluent-irrigated hillslope. Journal of Hydrology (NZ), v.38, p.97-120.

Bardsley, W.E. and Pearson, C.P. (1999) An experiment in subjective graphical quantile estimation applied to the generalised extreme value distribution. Hydrological Sciences Journal, v.44, p.399-405. Bardsley, W.E., Jorgensen, M.A., Alpert, P. and Ben-Gai, T. (1999) A significance test for empty corners in scatter diagrams. Journal of Hydrology, v.219, p.1-6. Brown, E.J. and Bardsley, W.E. (1999) Recording rainfall stratigraphy: a modified storage gauge for measuring rainfall events. Journal of Hydrology, v.216, p.137-144. Bardsley, W.E. and Campbell, D.I., (1995) Water loading: a neglected factor in the analysis of piezometric time series from confined aquifers (Note). Journal of Hydrology (NZ), v.34, p.89-93. Bardsley, W.E., (1995) Using groundwater for hydro electric power generation. Journal of Hydrology (NZ), v.34, p.1-14. Bardsley, W.E., (1995) Comment on "A Stochastic Model Relating Rainfall Intensity to Raindrop Processes". Water Resources Research, v.31, p.1607-1609. Bardsley, W.E., (1994) Against objective statistical analysis of hydrological extremes. Journal of Hydrology, v.162, p.429-431. Bardsley, W.E., (1994) Power from groundwater. Journal of Hydrology, v.162, p.191-196. Bardsley, W.E., and Campbell, D.I.C., (1994) A new method for measuring near-surface moisture budgets in hydrological systems. Journal of Hydrology, v.154, p.245-254. Bardsley, W.E., (1992) Discussion of "Estimation of Storativity from Recovery Data", by P.N. Ballukraya and K.K. Sharma. Ground Water, v.30, p.272-273. Bardsley, W.E., (1991) Graphical estimation of the Theis drawdown function. Journal of Hydrology, v.128, p.357-367. Bardsley, W.E., and Khatep, M.M., (1991) Estimating work-magnitude associations in Earth surface processes. Mathematical Geology, v.23, p.591-608. Bardsley, W.E., (1991) Some thoughts on the automated generation and selection of hypotheses in the Earth sciences. Mathematical Geology, v.23, p.241-256. Bardsley, W.E., (1991) Reliability-based time axes for flood data presentation. Journal of Hydrology, v.119, p.389-391. Bardsley, W.E., (1990) On the maximum observed hailstone size. Journal of Applied Meteorology, v.29, p.1185-1187. Bardsley, W.E., Mitchell, W.M. and Lennon, G.W., (1990). Estimating future sea level extremes under conditions of sea level rise. Coastal Engineering, v.14, p.295-303. Bardsley, W.E., (1989) Graphical estimation of extreme value prediction functions. Journal of Hydrology, v.110, p.315-321.

Bardsley, W.E., (1989) A simple parameter-free flood magnitude estimator. Hydrological Sciences Journal, v.34, p.129-137. Bardsley, W.E., (1989) Using historical data in nonparametric flood estimation. Journal of Hydrology, v.108, p.249-255. Bardsley, W.E., (1988) Toward a general procedure for the analysis of extreme random events in the Earth sciences. Mathematical Geology, v.20, p.513-528. Bardsley, W.E., and Sneyd, A.D., (1987) Least-squares estimation of equation parameters for predicting drawdown from a single pumped well. Journal of Hydrology, v.93, p.153-161. Bardsley, W.E., and Manly, B.F.J., (1987) Transformations for improved convergence of distributions of flood maxima to a Gumbel limit. Journal of Hydrology, v.91, p.137-152. Khatep, M.M., and Bardsley, W.E., (1987) A simple recursive formula to replace Wilson's graphical lake routing. Journal of Hydrology, v.91, p.371-372. Bardsley, W.E., Sneyd, A.D., and Hill, P.D.H., (1985) An improved method of least-squares parameter estimation with pumping-test data. Journal of Hydrology, v.80, p.271-281. Bardsley, W.E., and Manly, B.F.J., (1985) Note on selecting an optimum raingauge subset. Journal of Hydrology, v.76, p.197-201. Bardsley, W.E., (1984) Note on the form of distributions of precipitation totals. Journal of Hydrology, v.73, p.187-191. Bardsley, W.E., and Petch, R.A., (1984) Note on estimating the unit hydrograph (effective rainfall unknown). Journal of Hydrology, v.73, p.383-388. Bardsley, W.E., and Khatep, M.M., (1984) A general model for nucleation temperatures of supercooled water droplets. Journal of the Atmospheric Sciences, v.41, p.856-862. Khatep, M.M., Fitzharris, B.B., and Bardsley, W.E., (1984) Water vapor transfer over the Southwest Pacific: mean patterns and variations during wet and dry periods. Monthly Weather Review, v.112, p.1960-1975. Bardsley, W.E., (1984) Conservative estimation of groundwater volumes: application of linear programming to tritium data. Journal of Hydrology, v.67, p.183-193. Bardsley, W.E., (1983) An alternative distribution for describing the instantaneous unit hydrograph. Journal of Hydrology, v.62, p.375-378. Bardsley, W.E., (1983) Bounds for survival probability with low-magnitude design floods. Journal of Hydrology, v.62, p.371-373. Bardsley, W.E., (1981) Note on two limit distributions of bedload movement. Journal of Hydrology, v.52, p.165-169. Bardsley, W.E., (1981) Note on the time to flood exceedance. Journal of Hydrology, v.49, p.395-399.

Bardsley, W.E., (1980) Note on the use of the inverse Gaussian distribution for wind energy applications. Journal of Applied Meteorology, v.19, p.1126-1130. Bardsley, W.E., (1980) Note on random raindrops and sampling error. Nordic Hydrology, v.11, p.1-6. Bardsley, W.E., (1979) Note on the application of classical extreme value theory to flood data. Journal of Hydrology, v.42, p.187-193. Bardsley, W.E., and Manly, B.F.J., (1979) Note on the distribution of flood maxima for random sample size. Journal of Hydrology, v.42, p.l95-l98. Bardsley, W.E., (1977) A test for distinguishing between extreme value distributions. Journal of Hydrology, v.34, p.377-381.

Conference presentations (hydrology) Bardsley, W.E., (2012). Probability models and uncertainty in hydrology: some personal refelections. Presented to the New Zealand Hydrological Society Conference, Nelson, November, 2012. Conference abstracts p.30-31. Majeed, K.M., Bardsley, W.E., (2012). Prospects for pumped storage in central Otago. Presented to the New Zealand Hydrological Society Conference, Nelson, November, 2012. Conference abstracts p.138-139. Jenkins, B.R., Bardsley, W.E., (2012). Fitting a doubly censored three parameter Weibull distribution to recession curves. Presented to the New Zealand Hydrological Society Conference, Nelson, November, 2012. Conference abstracts p.109. Vetrova, V.V., Bardsley, W.E., (2012). Toward seasonal forecasting in the Upper Waitaki catchment. Presented to the New Zealand Hydrological Society Conference, Nelson, November, 2012. Conference abstracts p.214-215. Bardsley, W.E., Liu, S., Vetrova, V., (2012). An alternative approach to formulating and calibrating hydrological models. Presented to the AOGS-AGU (WPGM) Joint Assembly, Singapore, August, 2012. Vetrova, V.V., Bardsley, W.E., (2012). An approach to seasonal inflow forecasting based on empirical mode decomposition. Poster presented to the AOGS-AGU (WPGM) Joint Assembly, Singapore, August, 2012 Vetrova, V.V.,, Bardsley, W.E., (2012). Wavelet analysis of hydro lake inflows. Poster presented to the AOGS-AGU (WPGM) Joint Assembly, Singapore, August, 2012. Vetrova, V.V., Bardsley, W.E., (2011). A nonlinear analysis of hydro lake inflows in the Waitaki catchment. Presented to the New Zealand Hydrological Society Conference, Wellington, December, 2011. Conference abstracts p.183-184. Bardsley, W.E. (2011). The high price of hydro power. Presented to the New Zealand Hydrological Society Conference, Wellington, December, 2011. Conference abstracts p.30-31.

Majeed, K.M., Bardsley, W.E., (2011). Toward evaluation of hydraulic cycle efficiency of a possible seasonal pumped storage scheme at Onslow, New Zealand. Poster presented to the New Zealand Hydrological Society Conference, Wellington, December, 2011. Bardsley, W.E., Yueh, M., (2011). The Hydrology Education Resource: a Snapshot in Time. Presented to the IAHS workshop Education in the Hydrological Sciences, Hydrology Section, International Union of Geodesy and Geophysics (IUGG) General Assembly, Melbourne, June-July, 2011. Bardsley, W.E., (2010). A general methodology for creating simplified calibration-amenable hydrological models. Presented to the New Zealand Hydrological Society Conference, Dunedin, 7-10 December, 2010. Conference abstracts p.177-178. Hopkirk, C.L., Bardsley, W.E. (2010). A simple lake inflow daily forecasting methodology for Lake Waikaremoana. Presented to the New Zealand Hydrological Society Conference, Dunedin, 7-10 December, 2010. Conference abstracts p.203-204. Fukuda, K., Bardsley, W.E. (2010). Data exploration techniques to extract simple predictive models from large hydrological data sets. Eos Trans. AGU, 91(26), West. Pac. Geophys. Meet. Suppl., Abstract H32A-04. Western Pacific meeting of the American Geophysical Union, June 22-25, Taipei. Bardsley,W.E. (2010). Two examples of constructing simplified hydrological models: 1-d tracer dispersion with drift, and lasso-derived predictive models for runoff and seasonal forecasting. Eos Trans.AGU, 91(26), West. Pac. Geophys. Meet. Suppl., Abstract H32A-03. Western Pacific meeting of the American Geophysical Union, June 22-25, Taipei. Hopkirk, C.L., Bardsley, W.E. (2010). Simple hydrological models to improve operation of the Waikaremoana hydro power scheme, New Zealand. Eos Trans. AGU, 91(26), West. Pac. Geophys. Meet. Suppl., Abstract H33A-170. Western Pacific meeting of the American Geophysical Union, June 22-25, Taipei. (Poster) Bardsley, W.E. (2010). Reflections on teaching undergraduate hydrological science. Eos Trans.AGU, 91(26), West. Pac. Geophys. Meet. Suppl., Abstract H42A-01. Western Pacific meeting of the American Geophysical Union, June 22-25, Taipei. Yueh, M.M., Cowie, B., Bardsley, W.E. (2010). Opportunity for hydrological education in Taiwanese junior high schools: experience from the introduction of environmental education. Eos Trans. AGU, 91(26), West. Pac. Geophys. Meet. Suppl., Abstract H42A-08. Western Pacific meeting of the American Geophysical Union, June 22-25, Taipei. Bardsley, W.E., Brown, E.J., Liu, S. (2009). A method of simulating correlated multiple annual flow duration or annual cumulative discharge graphs for scenario evaluation of complex water resource systems. New Zealand Hydrological & Freshwater Sciences Societies Joint Conference, Whangarei, Northland, 23-27 November, 2009. Conference abstracts p.39. Guan, H., Bardsley., W.E., Simmons, S., Cook, P. (2009). Monitoring soil moisture and water fluxes using a geological weighing lysimeter under a complex surface condition. Poster presented by H. Guan at the GEWEX Science Conference, Melbourne, 24-28 August, 2009.

Bardsley, W.E., Vavae, H. (2008). A Simple graphical methodology to identify high probabilities of future low rainfall periods in Tuvalu. Eos Trans. AGU, 89(23), West. Pac. Geophys. Meet. Suppl., Abstract A25B-08. Poster presentation to the Western Pacific Meeting of the AGU, Cairns, Australia, July 29-August 1, 2008. Bardsley, W.E. (2008). Geological weighing lysimeters: a tool for case studies of irrigated fields? Eos Trans. AGU, 89(23), West. Pac. Geophys. Meet. Suppl., Abstract H43A-02. Western Pacific Meeting of the American Geophysical Union, Cairns, Australia, July 29- August 1, 2008. Bardsley, W.E. (2008). Geological weighing lysimeters for accurate undisturbed monitoring of ground surface water budgets in real time. Geophysical Research Abstracts, Vol. 10, EGU2008-A-12243, 2008, SRef-ID: 1607-7962/gra/EGU2008-A-12243 EGU General Assembly 2008. Poster paper presented at the EGU General Assembly, Vienna, April 13-18, 2008. Bardsley, W.E. (2008). Setting the scene for a new global hydrological initiative: Prediction of Ungauged Land Surface Elements (PULSE). Geophysical Research Abstracts, Vol. 10, EGU2008-A-01763, 2008, SRef-ID: 1607-7962/gra/EGU2008-A-01763 EGU General Assembly 2008. Oral paper presented at the EGU General Assembly, Vienna, April 13-18, 2008. Bardsley, W.E. (2008). Geological weighing lysimeters and deep underground laboratories: future tools for long-term ecological and subsurface water budget monitoring at the hectare scale. Invited oral presentation to the International Asia-Pacific Regional Workshop the of International Academy Panel (IAP) on Water Security & Ground Water Sustainability, Beijing, March 7-9, 2008. Vavae, H., Bardsley, W.E. (2007). Toward drought forecasting in Tuvalu. New Zealand Hydrological Society Conference, Rotorua, Nov. 20-23. Conference abstracts p.103. Zhang, Y., Bardsley, W.E. (2007). Detecting shifts in hydroclimatic time series in the greater Waikato region. New Zealand Hydrological Society Conference, Rotorua, Nov. 20-23. Conference abstracts, p.126. Bardsley, C., Bardsley, W.E. (2007). Association of New Zealand lightning with discharge variations. New Zealand Hydrological Society Conference, Rotorua, Nov. 20-23. Poster. Conference abstracts (poster section) p.1. Bardsley, W.E., Liu, S. (2007). Toward a global initiative for estimating water budgets of land surface elements. New Zealand Hydrological Society Conference, Rotorua, Nov. 20-23. Conference abstracts, p.2. Bardsley, W.E. (2006). The Onslow seasonal pumped storage scheme revisited: an alternative approach to water level management of the southern hydro lakes? New Zealand Hydrological Society Conference, Christchurch, Nov. 20-23. Conference abstracts, p.148-149. Purdie, J., Bardsley, W.E. (2006). Seasonal inflow and rainfall prediction models for the Waitaki hydro catchment – calibration, validation, and operational application. New Zealand Hydrological Society Conference, Christchurch, Nov. 20-23. Conference abstracts, p.146.

Bardsley, C., Bardsley, W.E. (2006). Association of New Zealand lightning with discharge variations. New Zealand Hydrological Society Conference, Christchurch, Nov. 20-23. Conference abstracts, p.220-221. (poster) Jelley, N., Bardsley, W.E. (2006) A regression approach to forecasting well water levels in Whangamata, Coromandel. New Zealand Hydrological Society Conference, Christchurch, Nov. 20-23. Conference abstracts, p.210-211. Bardsley, W.E. (2006). Simulating a possible seasonal pumped storage scheme in New Zealand for enhanced storage capacity and environmental lake management. Western Pacific Meeting of the American Geophysical Union, Beijing, July 24-27. Eos Trans. AGU, 87(36), West. Pac. Geophys. Meet. Suppl., Abstract H41E-0098. (poster) Bardsley, W.E., Liu, S. (2006). Toward constructing simplified rainfall-runoff models using constrained linear functions. Paper presented by W.E. Bardsley at the Western Pacific Meeting of the American Geophysical Union, Beijing, July 24-27. Eos Trans. AGU, 87(36), West. Pac. Geophys. Meet. Suppl., Abstract H22A-04. Bardsley, W.E. (2006). Simulating correlated annual flow duration curves or cumulative inflows for modeling water management scenarios in multi-tributary river basins. Western Pacific Meeting of the American Geophysical Union, Beijing, July 24-27. Eos Trans. AGU, 87(36), West. Pac. Geophys. Meet. Suppl., Abstract H43B-05. Bardsley, W.E. (2006). A pumped storage scheme for maintaining hydro electricity against climatic variations? 8th Annual New Zealand Energy Summit, Wellington, July 17-18. Conference summary, p.1-10 (invited paper). Bardsley,W.E., Leyland, B., and Bear, S. (2006). A large pumped storage scheme for seasonal reliability of national power supply? Paper presented by W.E. Bardsley to the 2006 Electricity Engineers Association Conference, Auckland, June 16-17. Bardsley,W.E. (2006). China and New Zealand: large seasonal pumped storage schemes for an electricity future using wind power and small hydro systems? Invited presentation to the first regional workshop of the InterAcademy Panel (IAP) on water security: International East Asia Regional Workshop of IAP on Water Security Related to Climate Change and Human Activity, Beijing, June 12-15, Conference summary p.1-12. Sophocleous, M, Bardsley, W.E. and Healy, J. (2005). A rainfall loading response recorded at 300 meters depth: Implications for geological weighing lysimeters. Poster presented by M. Sophocleous, at the 2005 Geological Society of America Annual Meeting, Salt Lake City, Utah, October 16-19. Geological Society of America Abstracts with Programs, Vol. 37, No. 7, p. 359. URL http://www.geosociety.org/meetings/2005/. Purdie, J, and Bardsley, W.E. (2004). Predicting seasonal inflows to the Waitaki hydro electricity catchment. New Zealand Hydrological Society Conference, Queenstown, Nov. 15-20. Conference abstracts, p.140. Bear, S, and Bardsley, W.E. (2004). A large New Zealand pumped storage scheme for reliable power through dry years? New Zealand Hydrological Society Conference, Queenstown, Nov. 15-20. Conference abstracts, p.32-33.

Liu, S., Bardsley, W.E., Mo, X. (2004). Identifying the signal of LUCC from the change of hydrological processes for Lushi Catchment, China, by using a model-constructing approach. 4th International Colloquium on Land Use and Land Cover Change and Environmental Issues in Asia, 15-16 October, 2004, Beijing, China. (poster) Bardsley, W.E. (2004). A Smoothed Bootstrap Approach to Monte Carlo Generation of N Spatially Correlated Graphs of Annual Flow Duration or Cumulative Discharge. Second Conference of the Asia Pacific Association of Hydrology and Water Resources, 5-8 July 2004, Singapore. Bardsley, W.E. (2004). Call for an APHW funding proposal for emplacement and monitoring of a set of geological weighing lysimeters. Second Conference of the Asia Pacific Association of Hydrology and Water Resources, 5-8 July 2004, Singapore. Purdie, J.M., Bardsley, W.E. (2003). Toward Predicting Seasonal Inflows to the Waitaki Hydro Electricity Catchment. New Zealand Meteorological Society Conference, November, 26-28, Christchurch. Conference abstracts, p.15. Bear, S.F., Bardsley, W.E. (2003). A pumped storage / thermal station hybrid for maintaining New Zealand electricity supply through dry years?. New Zealand Hydrological Society Conference, Taupo, November 18-21. Conference abstracts, p.5-6. Bardsley, W.E. (2003). Inverse Gaussian and mixed distribution forecasting models of tracer arrival in heterogeneous hydrological systems. New Zealand Hydrological Society Conference, Taupo, November 18-21. Conference abstracts, p.5-6. Bardsley, W.E. (2003). Application of stochastic methods to creating models of contaminant transport and dispersion in rivers and groundwater. International Congress on Modelling and Simulation (MODSIM), Townsville, Australia, July 14-17. Bardsley, W. E., Liu, S. (2002). Use of finite-mixture distributions for generating rainfall-runoff models for application to a range of catchment scales and locations. Western Pacific Geophysics Meeting of the American Geophysical Union, Wellington, New Zealand, July 9-12 2002. Eos Transactions of the American Geophysical Union 83 (22), Western Pacific Geophysics Meeting Supplement, Abstract H32A-01, p.29. (Poster) Purdie, J.M., Bardsley, W. E. (2002). Toward predicting seasonal inflows in the Waitaki hydro power catchment, New Zealand. Western Pacific Geophysics Meeting of the American Geophysical Union, Wellington, New Zealand, July 9-12 2002. Eos Transactions of the American Geophysical Union 83 (22), Western Pacific Geophysics Meeting Supplement, Abstract H31B-03, p.29. Brown, E., Bardsley, W.E. (2001). A model-based evaluation of horizontal wells for improving the functionality of an urban reservoir system. New Zealand Hydrological & New Zealand Limnological Society Joint Conference, Palmerston North, November 20-23. Conference abstracts p. 60. Bardsley, W.E., Campbell, D.I. (2000). Natural geological weighing lysimeters: potential for using natural deep groundwater pressure fluctuations for spot checks of near-surface water mass change for GRACE calibration. American Geophysical Union Fall Meeting, December 15-19, San Francisco, Eos Transactions of the American Geophysical Union, 81(48), Fall meeting suppl. H72B-31, 2000. (Poster).

Brown, E., Bardsley, W.E. (2000). Evaluating the potential of constructed groundwater systems in support of Auckland’s water supply operations. Joint conference of the New Zealand Hydrological Society, Meteorological Society of New Zealand, and New Zealand Limnological Society, 21-24 November 21-24, Christchurch. Conference abstracts, p. 344-345. Breuer, B.A., Koch, M., Bardsley, W.E. (1999). Modeling artesian flow for additional hydraulic income generation in a small hydropower catchment in New Zealand. Fall meeting of the American Geophysical Union, San Francisco, Dec. 13-17, 1999. (Supplement to EOS. Transactions of the American Geophysical Union, v. 80 (46). Brown, E., Bardsley, W.E., (1999). Evaluating the potential of constructed groundwater systems in support of the Auckland water supply system. 25th. Hydrology and Water Resources Symposium (A congress of the Institute of Engineers, Australia), Brisbane 6-8 July, 1999, (Proceedings, p.1105-1108). (poster) Brown, E., Bardsley, W.E., (1999). Development of the stillstand rain gauge for recording rainfall stratigraphy. 25th. Hydrology and Water Resources Symposium (A congress of the Institute of Engineers, Australia), Brisbane 6-8 July, 1999, (Proceedings, p.269-275). Bardsley, W.E., Campbell, D.I., (1999). Confined aquifers can serve as giant weighing lysimeters. 2nd international conference on Water Resources & Environment Research, Brisbane July 6-8, 1999. (Proceedings, p.884-889). Peacock, A.J., Tomer, M.D., Bardsley, W.E., (1998). Water, nitrate-N, and chloride budgets of a wetland receiving land-treated wasterwater. New Zealand Water and Waste Water Conference, Wellington, September, 1998. Bardsley, W.E., Breuer, B.A, Choudhry, S., Brown, E.J., Brown, N.Z., (1998). Hydropower hydrology at the University of Waikato. Meteorological Society and New Zealand Hydrological Society Joint Conference, Dunedin, November, 1998. Breuer, B.A., Bardsley, W.E., (1997). Groundwater pumping to augment winter baseflows in a small hydropower catchment? Geological Society of New Zealand Conference, Wellington, November. (Poster) Bardsley, W.E., Campbell, D.I., (1996). Overview of results from a replicated aquifer lysimeter experiment in a pasture environment. American Geophysical Union Western Pacific Geophysics Meeting, Brisbane, July 23-27. Bardsley, W.E., Campbell, D.I., (1995). Some results from a replicated aquifer lysimeter experiment. New Zealand Meteorological Society and Hydrological Society Joint Symposium, Christchurch, Nov. 12-16. Bardsley, W.E., Campbell, D.I.C. (1995). Aquifer lysimeters for direct measurement of areal evapotranspiration in arid environments. Presented at the 1995 International Union of Geodesy and Geophysics XXI General Assembly, Boulder, Colorado, USA. (Symposium Abstracts, p.A219). Bardsley, W.E., (1994). Three in one: aquifer lysimeters; power from groundwater; high hydros. New Zealand Hydrological Society Conference, Hamilton, November. Conference abstracts, p.1-6.

Campbell, D.I., Bardsley, W.E., (1993). Measuring near-surface moisture budgets with confined aquifers. Fourth Scientific Assembly of the International Association for Hydrological Sciences, Yokohama, Japan, July 1993. Bardsley, W.E., (1992). Some thoughts on criticism, innovation and publicity in hydrology. New Zealand Hydrological Society Conference, Auckland, November. Campbell, D.I., Bardsley, W.E., (1992). The aquifer lysimeter: using confined aquifers to make direct measurements of areal rainfall and evaporation? New Zealand Hydrological Society Symposium, Auckland, November. Bardsley, W.E., Campbell, D.I., Hadfield, J., (1992). Aquifer lysimeters? 7th Australasian Forum on Climatology, Cairns, Australia, July. Bardsley, W.E., Mitchell, W.M., Lennon, G.W., (1989). A brief overview of some techniques of design analysis for future river floods and sea level extremes. Joint meeting of the New Zealand Hydrological Society and The Institution of Engineers, Australia. The Institute of Engineers, Australia, National Conference Publication No. 89/19, p.223-226. Christchurch, November. Bell, A.R., Hodder, A.P.W., Bardsley, W.E., (1989). Effluent-ignimbrite interactions at Kinleith, New

Zealand. Proceedings of the 6th International Symposium on Water-Rock Interaction, Malvern,

Shropshire (UK),3-8 August 1989, p.65-68. D.L. Miles (Ed), Balkema, Rotterdam, (1989).

Bardsley, W.E., (1987). Toward a general procedure for the analysis of extreme random events in

hydrology. IUGG international conference, Vancouver, Canada, July.

Bardsley, W.E., (1987). Nonparametric design flood estimation. New Zealand Hydrological Society

Conference, Gisborne, November.

Bardsley, W.E., (1986). Transformations for flood analysis. New Zealand Hydrological Society

Conference, New Plymouth, November.

Bardsley, W.E., (1978) A test for extreme value distributions. New Zealand Hydrological Society

Symposium, Christchurch.

Conference sessions co-convened GRACE, other remote sensing platforms and ground based methods for estimating multi-scale surface water budgets, groundwater system characterization and hydrological processes. Session J-H01 (Joint Symposium) of the International Union of Geodesy and Geophysics (IUGG) Conference, Melbourne, June 28 - July 7, 2011. Conveners: M. Hafeez, W.E. Bardsley, R. Pail, F. Seyler, N. van de Giesen. Education in the hydrological sciences. Session HW14 (International Association of Hydrological Sciences Workshop) of the International Union of Geodesy and Geophysics (IUGG) Conference, Melbourne, June 28 - July 7, 2011. Conveners: A. Askew, W.E. Bardsley, R. Vennecker, H. Karambiri, T. Sawunyama. Challenges related to simplification, process representation, and scaling. Session H31B of the Western Pacific meeting of the American Geophysical Union, Taipei, Taiwan, June 22-25, 2010. Conveners: W.E. Bardsley, B. Sivakumar, K. Fukuda, J. A. Vrugt. Present and future of education in the hydrological sciences. Session H42A of the Western Pacific meeting of the American Geophysical Union, Taipei, Taiwan, June 22-25, 2010. Conveners: W.E. Bardsley, M. Yueh, C. J. Wang, J. Suen. Panels etc Currently on panel of assistant editors for Natural Resources Research. Previously served on assistant editorial panel of Mathematical Geology. Presently serving on an IAHS panel on tertiary education in hydrology. Awarded 2011 New Zealand Hydrological Society Award for Outstanding Achievement.