Phone: 319-335-1806
E-mail: you-kuan-zhang@uiowa.edu
University of Arizona, Tucson Ph.D. Hydrology 1990
Nanjing University, China M.S. Hydrogeology 1982
Jilin University, China B.S. Hydrogeology 1978
2006-present Professor Department of Geoscience, University of Iowa
Secondary Professor Department of Civil & Env. Engineering,
University of Iowa
2006-present Siyuan Adjunct Professor Nanjing University, China
1997-2005 Associate Professor Department of Geoscience, University of Iowa
1997-present Secondary Associate Professor Department of Civil & Env. Engineering
University of Iowa
1994-present Research Engineer Iowa Institute of Hydraulic Research
University of Iowa
2005-present Adjunct Professor Nanjing University, China
2000-present Adjunct Professor Hohai University, Nanjing, China
1997 Visiting Professor Department of CEE, UC Berkeley
1993-1996 Assistant Professor Department of Geology, University of Iowa
1993-1996 Secondary Assistant Professor Department of Civil & Env. Engineering
University of Iowa
1990-1993 Research Assistant Professor Conservation and Survey Division
University of Nebraska, Lincoln
II. TEACHING AT THE UNIVERSITY OF IOWA
Sem. & year |
Advisees |
Course Taught |
Selected ACE Summary Score |
|||||
Unders |
Grads |
Course Number & Title |
Students Enrolled |
Course organization |
Instructor preparation |
Instructor availability |
Grading was faired |
|
Spring, 2006 |
|
5 |
12:184 *53:104 Applied Groundwater Modeling |
11 |
6.00 |
6.00 |
5.93 |
5.83 |
Spring, 2006 |
|
5 |
12:008 Introduction to Environmental Sciences |
398 |
5.02 |
5.43 |
5.10 |
5.07 |
Fall, 2005 |
6 |
5 |
12:166 Hydrogeology |
13 |
5.86 |
5.94 |
5.94 |
5.86 |
Spring, |
6 |
5 |
12:153 |
14 |
5.64 |
5.75 |
5.58 |
5.50 |
Spring, 2005 |
6 |
5 |
12:188 Environmental Seminar |
20 |
5.67 |
5.83 |
5.79 |
5.87 |
Fall, 2004 |
6 |
5 |
12:184 & 53:104 Groundwater Modeling |
9 |
6.00 |
6.00 |
5.93 |
5.83 |
Spring, 2004 |
6 |
5 |
12:166 Hydrogeology |
11 |
5.80 |
5.92 |
5.92 |
5.63 |
Spring, 2004 |
5 |
7 |
12:153 & 159:153 Geocomputing |
16 |
5.88 |
5.88 |
6.00 |
5.92 |
Fall 2003 |
4 |
7 |
12:178 & 44:188 Applied Geostatistics |
11 |
5.94 |
5.94 |
5.94 |
5.94 |
Summer 2003 |
5 |
4 |
12:199 Hydrogeologic Methods |
6 |
6.00 |
6.00 |
6.00 |
6.00 |
Spring 2003 |
5 |
4 |
12:153 & 159:153 Geocomputing |
20 |
5.38 |
5.85 |
5.57 |
5.78 |
Spring 2003 |
5 |
4 |
12:166 Hydrogeology |
10 |
5.92 |
5.63 |
5.80 |
4.67 |
Fall 2002 |
15 |
4 |
12:188 Environmental Seminar |
18 |
5.71 |
5.60 |
5.80 |
5.60 |
Fall 2002 |
15 |
4 |
12:184 & 53:104 Groundwater Modeling |
6 |
5.56 |
6.00 |
5.83 |
5.17 |
Spring 2002 |
15 |
5 |
12:166 Hydrogeology |
18 |
5.92 |
5.92 |
5.92 |
5.91 |
Spring 2002 |
15 |
5 |
12:153 & 159:153 Geocomputing |
23 |
4.75 |
5.25 |
5.25 |
5.79 |
Fall |
15 |
4 |
On leave |
|
|
|
|
|
Spring 2001 |
15 |
3 |
12:166 Hydrogeology |
20 |
5.00 |
5.69 |
5.78 |
5.13 |
Fall 2000 |
15 |
3 |
12:188 Environmental Seminar |
10 |
**** |
**** |
**** |
**** |
Fall 2000 |
15 |
3 |
12:178 & 44:188 Applied Geostatistics |
9 |
5.40 |
5.80 |
5.00 |
5.60 |
Fall 2000 |
15 |
3 |
12:119 Directed study |
1 |
**** |
**** |
**** |
**** |
Summer |
15 |
3 |
Study abroad program: International water |
17 |
**** |
**** |
**** |
**** |
Summer 2000 |
15 |
3 |
12:199 Hydrogeological methods |
8 |
**** |
**** |
**** |
**** |
Spring 2000 |
15 |
3 |
12:184 & 53:104 Groundwater Modeling |
6 |
5.88 |
5.88 |
6.00 |
5.67 |
Spring |
15 |
3 |
12:153 & 159:153 Geocomputing |
25 |
**** |
**** |
**** |
**** |
Fall 1999 |
15 |
3 |
12:166 Hydrogeology |
12 |
5.14 |
5.75 |
5.75 |
5.40 |
Fall 1999 |
15 |
4 |
12:188 Environmental Seminar |
12 |
**** |
**** |
**** |
**** |
Summer 1999 |
15 |
3 |
12:184 & 53:104 Groundwater Modeling |
6 |
5.50 |
6.00 |
6.00 |
5.90 |
Summer 1999 |
15 |
3 |
12:199 Hydrogeological methods |
8 |
**** |
**** |
**** |
**** |
Spring 1999 |
15 |
3 |
12:166 Hydrogeology |
15 |
5.86 |
5.86 |
5.94 |
5.86 |
Spring 1999 |
15 |
3 |
12:153 & 159:153 Geocomputing |
25 |
**** |
**** |
**** |
**** |
**** no data available
2. Student Supervised
Degree objective Student Name Years Outcome
Chi, John 1993 – 1994
Schilling, Keith 2006 – present
Lachhab, Ahmed 2003 – 2006 Graduated
Li, Zhongwei 2003 – 2006 Graduated
Seo, Byong-min 1998 – 2004 Graduated
Lin, Jie 1992 - 1997
(works at the Research Institute of Basic Sciences,
Chungnam National University, Korea)
Kent, Andrew 2003 – present Current
Stewart, Matt 2005 – present Current
Weisbrod, Timothy 2003 – 2005 Graduated
(works for Iowa state government)
Zhou, Lei 2001 – 2004 Graduated
(a Ph.D. student at University of Minnesota, Twin Cities)
Brown, Eric 2002 – 2004 Graduated
(works in Des Moines)
Schulmeyer, Pete 1999 – 2002 Graduated
(works for an Environmental Consulting Company)
Wallace, Andi 1999 – 2001 Graduated
(works for Environment Resources Management, Indiana)
Shinall, Liz 1998 – 2000 Graduated
(Worked at Iowa Geological Survey Bureau)
Ribas, Scott 1998 – 2000 Graduated
(works in a State agency in Long Island)
Keeler, Ryan 1995 – 1997 Graduated
(works for Environment Resources Management, Chicago)
Lin, Jie 1993 – 1994 Graduated
(works for an Environmental Consulting Company in Washington)
Bayliss, Michael 2003 – present Current
Clayton, Krysti 2004 – present Current
Derynck, Lindsey 2004 – present Current
Renley, Jessica 2003 – present Current
Segreto, Mary 2004 – present Current
Smith, Sean 2005 – present Current
(Additional more than 20 former ES students supervised but not listed )
i. Ph.D. candidates
De, Malini Geography
Goshit, Sunday Geography
Liu, Xiaoyi Geoscience
Tiwari, Chetan Geography
Zeng, Yu Geography
ii. M.S. candidates
Knight, Charles
Anagnostou, Emmanouil CEE
Ansar, Matahel CEE
Banerjee, Rudy Geography
Chen, Grace Geography
Chen, Li-Chuan CEE
Dawson, John Geology
Emerson, Charles Geography
Lovanh, Nanh CEE
Nelson, Brian CEE.
Sayeeduzzaman, Mohammad Geology
Young, Bryan CEE
Craig, Andy CEE
Hagen, Brad CEE
Lachhab, Ahmed CEE
Langel, Rick Geology
Yang, Xiaoying Geography
I served as an instructor for the “International Perspectives on Water Resources Planning”, a study-abroad program in 2000 and led a group of 20 graduate students from UI and other universities in U.S. and Europe to China for a period of two weeks.
* = major contribution;
** = secondary contribution;
*** = equal contribution;
**** = minor contribution;
+ = co-author with an advisee.
*Zhang, Y.-K. and Z. Li, Effect of temporally correlated recharge on fractal fluctuations of groundwater levels, Water Resour. Res., 42, W10412, doi:10.1029/2005WR004828, 2006.
*Zhang, Y.-K, Z. Li., X. Yang, and K. Schilling, Fractal fluctuation of groundwater levels: Observation, Analyses and Simulations. Publication of the International Professionals for Advancement of Chinese Earth Sciences, Vol. 3: Environmental Geosciences, in press.
***Schilling, K., Z. Li , and Y.-K. Zhang, Groundwater-surface water interaction in the riparian zone of an incised channel, Walnut Creek, Iowa, J. Hydrol., 327, 140-150, doi:10.1016/j.jhydrol.2005.11.014, 2006.
*Zhang, Y.-K. and K. Schilling, Increasing Streamflow and Baseflow In Mississippi River since 1940’s: Effect of Land Use Change, J. Hydrol., 324, 412-422, doi:10.1016/j.jhydrol.2005.09.033, 2006.
*Zhang, Y.-K. and K. Schilling, Effects of land cover on water table, soil moisture, evapotranspiration, and groundwater recharge: a field observation and analysis, J. Hydrol., 319, 328-338, doi:10.1016/j.jhydrol.2005.06.044, 2006.
*+Li, Z. Y.-K. Zhang, K. Schilling, and M. Skopec, Cokriging Estimation of Daily Suspended Sediment Loads, J. Hydrol., 327, 389-398, doi:10.1016/j.jhydrol.2005.11.028, 2006.
*Zhang, Y.-K. and K. Schilling, Temporal Variations and Scaling of Streamflow and Baseflow and their Nitrate-Nitrogen Concentrations and Loads, Adv. in Water Resour., 28, p. 701-719, doi:10:1016/j.advwatres.2004.12.014, 2005.
*Zhang, Y.-K. and Z. Li, Temporal scaling of hydraulic head fluctuations: Nonstationary spectral analyses and numerical simulations, Water Resour. Res., 41, W07031, doi:10.1029/2004WR003797, 2005.
*Zhang, Y.-K. and K. Schilling, Temporal scaling of hydraulic head and river baseflow and its implication for groundwater recharge, Water Resour. Res., 40, W03504, doi:10.1029/2003WR002094, 2004.
*Zhang, Y.-K. and B. Seo, Stochastic analysis and Monte Carlo simulations of non-ergodic solute transport in three-dimensional heterogeneous and statistically anisotropic aquifers, Water Resour. Res., 40, W05103, doi:10.1029/2003WR002871, 2004.
*Zhang, Y.-K. and B. Seo, Numerical simulations of non-ergodic solute transport in three-dimensional heterogeneous porous media, Stochastic Environmental Research and Risk Assessment, 18(3), 205-215, doi:10.1007/s00477-004—178-4, 2004.
*Zhang, Y.-K. and D. Zhang, Applications of Stochastic Methods in Subsurface Hydrology, An Introduction to a Forum in Stochastic Environmental Research and Risk Assessment, Stoch Envir Res and Risk Ass, 18: 265, DOI 10.1007/s00477-004-0190-8, 2004.
**Schilling, K.E., and Y.-K. Zhang, Baseflow contribution to Nitrate-Nitrogen Export from a large, Agricultural Watershed, USA, J. Hydrol., 295, 305-316, doi:10:1016/j.jhydrol.2004.03.010, 2004.
*Zhang, Y.-K. and K. Schilling, Impact of Vegetation on Main Hydrological Processes: A Field Study and Its Implication for Water Quality, Advance in Earth Sciences, 19(3), 422-428, Article ID: 1001-8166(2004)03-0422-07, 2004.
**Schilling, K., Y.-K. Zhang, and P. Drobney, Water table fluctuations near an incised stream, Walnut Creek, Iowa, J. Hydrol., 286, p. 236-248, 2004.
*Zhang, Y.-K., Non-ergodic solute transport in physically and chemically heterogeneous porous media, Water Resour. Res., 39(7), 1197, doi:10.1029/2003WR002116, 2003.
*Zhang, Y.-K and R.C. Heathcote., An improved method for estimation of biodegradation rate with field data, Groundwater Monitoring and Remediation, 23(3), p.112-117, 2003.
*Zhang, Y.-K. and V. D. Federico, Letter to the editor: Comments on the paper ‘Comparison of observations from a laboratory model with stochastic theory: initial analysis of hydraulic and tracer experiments’, by S.E. Silliman and L. Zheng, Transport in Porous Media, 52: 111-115, 2003.
***Wang, L. and Y.-K. Zhang, An unconditionally-stable explicit scheme for groundwater flow equations, Computational Methods in Water Resources, XIV, p. 145-152, 2002.
*+Wallace, A. and Y.-K. Zhang, Calibration of a Groundwater Flow Model for Spatially- and Temporally-varied Recharge to a Fractured-Karst Aquifer, Acta Universitatis Carolinae-Geologica, 46: 286-289, 2002.
*Zhang, Y.-K., and V. D. Federico, Nonergodic solute transport in heterogeneous porous media: Influence of multiscale structure, in Zhang, D., and Winter, C.L., eds., Theory, Modeling, and Field Investigation in Hydrogeology: A Special Volume in Honor of Shlomo P. Neuman’s 60th Birthday: Boulder, Colorado, Geological Society of America Special Paper 348, p. 61–72, 2000.
*Zhang, Y.-K., B. Seo, and V. D. Federico, Stochastic analysis and simulation of transport of a Contaminant plume in nonuniform groundwater flow, Computational Methods in Water Resources, XIII, 389-395, 2000.
***Federico, V.D. and Y.-K. Zhang, Solute transport in heterogeneous porous media with long-range correlations, Water Resour. Res., 35(10), 3185-3192, 1999.
*Zhang, Y.-K. and V.D. Federico, Solute transport in three-dimensional heterogeneous media with a Gaussian covariance of log hydraulic conductivity, Water Resour. Res., 34(8), 1929-1934, 1998.
*Zhang, Y.-K. and J. Lin, Numerical simulations of transport of nonergodic plumes in heterogeneous aquifers, Stochastic Hydrology and Hydraulics, Vol. 12, No. 2, 117-139, 1998.
*Zhang, Y.-K., A comment on “Linear equilibrium adsorbing solute transport in physically and
chemically heterogeneous porous formations, 1. Analytical solutions” by Alberto Bellin
et al., Water Resour. Res., 34(12), 3701-3704, 1998.
*Zhang, Y.-K., On the Variances of Second Spatial Moments of a NonErgodic Plume in Heterogeneous Aquifers, Water Resour. Res., 33(8), 1893-1900, 1997.
*Zhang, Y.-K. and D. Zhang, Time-Dependent Dispersion of Non-Ergodic Plumes in Two-Dimensional Heterogeneous Porous Media, Journal of Hydrologic Engineering, Vol.2, No.2, 91-94, 1997.
*Zhang, Y.-K., D. Zhang, and J. Lin, Non-Ergodic Solute Transport in Three-Dimensional Heterogeneous Isotropic Aquifers, Water Resources Res., 32(9), 2955-2963, 1996.
*Zhang, Y.-K., Modeling of a Flowing-Well Test in a Fractured-Karst Aquifer with a Double-Porosity odel, Computational Methods in Water Resources, XI, Vol. I, 295-302, 1996.
*Zhang, D. and Y.-K. Zhang, Higher-Order Velocity Covariance and Its Effect on Advective Transport in Three-Dimensional Heterogeneous Anisotropic Media, Computational Methods in Water Resources , XI, Vol. I, 689-697, 1996.
*Zhang, Y.-K., E.-W. Bai, R. Libra, R. Rowden, and H. Liu, Simulation of Spring Discharge from a Limestone Aquifer in Iowa, USA, Hydrogeology Journal , v.4, no.4, 41-54, 1995.
*Zhang, Y.-K. and J. Chi, An Evaluation of Nonlinearity in Spatial Second Moments of Ensemble Mean Concentration in Heterogeneous Media, Water Resour. Res., 31(12), 2991-3005, 1995.
**Gosselin, D.C, J.F. Ayers, and Y.-K. Zhang, Modeling Concentration Variations in High-Capacity Wells: Implications for Groundwater Sampling, Water Resources Bulletin , Vol.30, No.4, 613-622, 1994.
***Neuman, S.P., O. Levin, S. Orr, E. Paleologos, D. Zhang, and Y.-K. Zhang, Nonlocal Representations of Subsurface Flow and Transport by Conditional Moments, Computational Stochastic Mechanics, ed. by A. H.-D. Cheng and C.Y. Yang, Computational Mechanics Publisher, Sothhamton, the United Kingdom, 451-473, 1993.
*Neuman, S.P. and Y.-K. Zhang, A Quasi-linear Theory of Non-Fickian and Fickian Subsurface Dispersion: 1. Theoretical Analysis with Application to Isotropic Media, Water Resour. Res. , 26(5), 887-902, 1990.
*Zhang, Y.-K. and S.P. Neuman, A Quasi-linear Theory of Non-Fickian and Fickian Subsurface Dispersion: 2. Application to Anisotropic Media and the Borden Site, Water Resour. Res. , 26(5), 903-913, 1990.
***Neuman, S.P., Y.-K. Zhang, and O. Levin, Quasi-linear Analysis, Universal Scaling, and Lagrangian Simulation of Dispersion in Complex Geologic Media, Dynamics of Fluids in Hierarchical Porous Formations, ed. by John Cushman, Academic Press, 349-391, 1990.
*Xue, Y. and Y.-K. Zhang, Application of the Dural-Porosity Model and Ritz Finite Element Method in Mine Drainage Estimation, Hydrogeology and Engineering Geology , No.3, 33-39, 1984.
*Zhang, Y.-K, Double-Porosity Model and Finite Element Solution to Flow in Fractured-Karst Aquifers, Engineering Prospecting , No.4, 57-68, 1983.
***Zhu, X. X. Qian, and Y.-K. Zhang, Estimation of Infiltration Coefficients in Fractured Rocks, Engineering Prospecting, No.3, 1982.
*Zhang, Y.-K. and R.C. Heathcote, Modeling the Fate and Transport of a Contaminant Plume in Sioux City, 8th International Petroleum Engineering Conference, 2001.
*Zhang, Y.-K. and B. Seo, Monte Carlo Simulations of Contaminant Plumes in Three-Dimensional Heterogeneous Porous Media, MODFLOW 2001 AND OTHER MODELING ODYSSEYS, Proceeding of An International Ground Water Modeling Conference and Workshops, 2001.
*+Shinall, L.A., Y.-K. Zhang, and M.J. Gannon, Effect of Heterogeneity on Nitrate Concentration in a Shallow Aquifer in Sioux County, Iowa, MODFLOW 2001 AND OTHER MODELING ODYSSEYS, Proceeding of An International Ground Water Modeling Conference and Workshops, 2001.
**Lovanh, N., Y.-K. Zhang, and P.J.J. Alvarez, Statistics and effect of first-order biodegradation rate coefficient on intrinsic remediation of groundwater contamination, the proceeding of the 6th International Petroleum Environmental Conference, October, 1999.
*Zhang, Y.-K. and J. Lin, Monte Carlo simulation of non-ergodic reactive solute transport in random porous media, GQ’98: International Conference and Special Workshops on GROUNDWATER QUALITY: Remediation and Protection, 1998.
*Zhang, Y.-K. and R. Keeler, Modeling groundwater flow with MODFLOW in a fractured-karst aquifer in the Big Spring basin, Iowa, MODFLOW’98 International Conference, 1998.
*Zhang, Y.-K. and J. Lin, Monte Carlo Simulations of Non-Ergodic Solute Transport in Random Porous Media, Proceedings of the 27th IAHR Congress, 240-245, 1997.
*Zhang, Y.-K. and E.-W. Bai, Simulation of Spring Discharge from a Limestone Aquifer in Northeastern Iowa with an Identification Scheme, Calibration and Reliability in Groundwater Modeling, IAHS Publ. no. 237, 31-39, 1996.
*Zhang, Y.-K. and J. Lin, Groundwater Monitoring Network Design with Geostatistics and Monte Carlo Simulation, Calibration and Reliability in Groundwater Modeling, ModelCARE 96, 361-370, 1996.
**Sibray, S.S. and Y.-K. Zhang, Three-Dimensional Modeling of Hydraulic Behaviour of a Highly Conductive Secondary Permeability Zone in the Brule Formation, Proceedings of 1994 Groundwater Modeling Conference, Fort Collins, Colorado, 445-452, 1994.
Zhang, Y.-K. Review of the book: “Stochastic Methods for Flow in Porous Media” by Dongxiao Zhang, Vadose Zone Journal, in preparation, 2006.
Zhang, Y.-K. Review of the book: “Applied Stochastic Hydrogeology” by Yoram Rubin, EOS, Vol. 84, No. 43, 2003.
Zhang, Y.-K. Review on the book: "Inverse Problems in Groundwater Modeling" by Ne-Zheng Sun, Bulletin of the American Meteorological Society, July, 1995.
Zhang, Y.-K. and R. Heathcote, Guidelines for numerical modelling in tier 3 assessments and other corrective actions, Technical Report submitted to Iowa Comprehensive Petroleum Undergrround Storage Tank Fund Board, p.79, 2001.
Zhang, Y.-K., B. Seo, N. Lovanh2, and P. J.J. Alvarez, Evaluation of computer software packages for RBCA tier-3 analysis, A technical report submitted to Iowa Comprehensive Petroleum Underground Storage Tank Fund Board, 2001.
Lovanh, N., Y.-K. Zhang, R.C. Heathcote, and P.J.J. Alvarez, Guidelines to Determine Site-Specific Parameters for Modeling the Fate and Transport of Monoaromatic Hydrocarbons in Contaminated Aquifers, A technical report submitted to Iowa Comprehensive Petroleum Underground Storage Tank Fund Board, 1999.
Alvarez, P., Y.-K. Zhang, and N. Lovanh, The Evaluation of the Iowa Tier-2 Model Based on the Benzene Plume Dimensions and the Literature Search, Final Report, pp. 147, 1998.
Li, Z. and Y.-K. Zhang, Dynamic Sediment Modeling: A Case Study at Walnut Creek, Iowa, American Geophysical Union 2006 Fall Meeting, San Francisco, Dec. 11 – 15, 2006.
Schilling, K. and Y.-K. Zhang, Effects of LULCC on Streamflow and Nitrate-N Concentrations in Iowa and the Mississippi River Basin, American Geophysical Union 2006 Fall Meeting, San Francisco, Dec. 11 – 15, 2006.
Zhang, Y.-K., Increasing Mississippi River Flow since 1940s: Climate Change or Human Intervention? Thirty-four Congress of International Association of Hydrogeologists, Bejing, China, Oct. 9 – 13, 2006.
Zhang, Y.-K. and K. Schilling, A field observation and analysis of effects of land cover on water table and groundwater recharge, Western Pacific Geophysics Meeting, Beijing, China, 24-27 July 24 – 27, 2006.
Zhang, Y.-K., Temporal Variations and Scaling of Water Table in Aquifers, 2006 International Symposium on Groundwater Resources and Environment, organized by the Institute of Geology and Geophysics, China Academy of Sciences, Beijing, China, July 22 – 23, 2006.
Zhang, Y.-K. and Z. Li, Fractal fluctuations of groundwater levels: Observation, interpretation, and implication, American Geophysical Union 2005 Fall Meeting, San Francisco, Dec. 5 – 9, 2005.
Li, Z. and Y.-K. Zhang, Fractal fluctuations of groundwater levels: Detrended fuctuation analyses, American Geophysical Union 2005 Fall Meeting, San Francisco, Dec. 5 – 9, 2005.
Yang, X., Z. Li, and Y.-K. Zhang, Y.-K, Fractal fluctuations of groundwater levels: Numerical simulations, American Geophysical Union 2005 Fall Meeting, San Francisco, Dec. 5 – 9, 2005.
Zhang, Y.-K., Increasing Mississippi River Flow since 1940s: Climate Change or Human Intervention? The Fifth annual meeting of the International Professionals for Advancement of Chinese Earth Sciences, Guangzhou, China, June 20 - 22, 2005.
Zhang, Y.-K. and Z. Li, Temporal variations of groundwater levels and their scaling properties, A Workshop on Challenges and Opportunities in Chinese Groundwater Science, China University of Geosciences, Beijing, China, June 16 - 17, 2005.
Zhang, Y-K., Comparison of Groundwater Research in USA and China, A Workshop on Challenges and Opportunities in Chinese Groundwater Science, China University of Geosciences, Beijing, China, June 16 - 17, 2005.
Zhang, Y.-K., Recent Advances in Groundwater Science, the Fifth annual meeting of the International Professionals for Advancement of Chinese Earth Sciences, Guangzhou, China, June 20 - 22, 2005.
Li, Z. and Y.-K. Zhang, Stochastic Analysis and Numerical Simulations of Hydraulic Head and Baseflow in Heterogeneous Media under Spatial-Temporal Random Recharge, American Geophysical Union 2004 Fall Meeting, San Francisco, Dec. 13-17, 2004.
Li, Z. and Y.-K. Zhang, Dynamic Sediment Modeling in Iowa Streams and Rivers: A Case Study at Walnut Creek, American Geophysical Union 2004 Fall Meeting, San Francisco, Dec. 13-17, 2004.
Zhang, Y-K., Ecohydrology: A rejuvenated discipline with new perspectives, the International Conference and Workshop on Frontiers of Earth Sciences: Earth, Environment, and Human Impacts, Chengdu, June, 2004.
Zhang, Y-K., Stochastic Surface Hydrology: from Theory to Applications, the International Conference and Workshop on Frontiers of Earth Sciences: Earth, Environment, and Human Impacts, Chengdu, June, 2004.
Zhang, Y-K., Numerical Simulations of Flow and Transport in Heterogeneous Porous Media, the International Workshop on Applications of Computational Methods in Earth Sciences, Beijing, June, 2004.
Li, Z. and Y.-K. Zhang, Temporal Scaling and Numerical Simulations of The Hydraulic Head and River Baseflow, American Geophysical Union 2001 Fall Meeting, San Francisco, Dec. 8 - 12, 2003.
Brown, E. and Y.-K. Zhang, Modeling Groundwater Flow and Contaminant Transport Around Two Lagoons in Eastern Iowa with Analytical and Numerical Models, MODFLOW and More 2003, Denver, Sept. 17 -20, 2003
Zhang, Y.-K. Stochastic analysis and Monte Carlo simulations of contaminant plumes in threedimensional heterogeneous porous media; The Fourth World Chinese conferenceon Geological Sciences, Nanjing, China, May 22–23, 2002.
Zhang, Y.-K. and B. Seo, Three-Dimensional Monte Carlo Simulations of Movement of a Contaminant Plume in Heterogeneous Aquifers, American Geophysical Union 2001 Fall Meeting, San Francisco, Dec. 6- 10, 2002.
Wang, L. and Zhang, Y.-K., An unconditionally-stable explicit scheme for groundwater flow equations, Computational Methods in Water Resources, XIV, 2002.
Wallace, A. and Zhang, Y.-K., Calibration of a Groundwater Flow Model for Spatially- and Temporally-varied Recharge to a Fractured-Karst Aquifer, International conference on ModelCare, June 17-20, Czech Republic 2002.
Bradley, A. A., G. J. Ciach, W. N. Eichinger, K. C. Hornbuckle, W. A. Illman, W. F. Krajewski*, A. Kruger, V. C. Patel, F. H. Weirich, Y. K. Zhang, Iowa Hydrologic and Environmental Validation Site: A Proposal to the Community, Eos Trans. AGU, H22A-05.
Wallace, A. and Y.-K. Zhang, Modeling of Groundwater Flow in a Karst Aquifer in Northeast Iowa, American Geophysical Union 2001 Fall Meeting, San Francisco, Dec. 10-14, 2001.
Zhang, Y.-K. and B. Seo, Monte Carlo Simulations of Contaminant Plumes in Three-Dimensional Heterogeneous Porous Media, MODFLOW 2001 AND OTHER MODELING ODYSSEYS, Abstracts of An International Ground Water Modeling Conference and Workshops, 2001.
Wallace, A. and Y.-K. Zhang, Modeling of Groundwater Flow in a Karst Aquifer in Northeast Iowa, American Geophysical Union 2001 Fall Meeting, San Francisco, Dec. 10-14, 2001.
Shinall, L.A., Y.-K. Zhang, and M.J. Gannon, Effect of Heterogeneity on Nitrate Concentration in a Shallow Aquifer in Sioux County, Iowa, MODFLOW 2001 AND OTHER MODELING ODYSSEYS, Abstracts of An International Ground Water Modeling Conference and Workshops, 2001.
Zhang, Y.-K. and B. Seo, Is the Borden plume ergodic? American Geophysical Union 2000 Fall Meeting, San Francisco, Dec. 15-19, 2000.
DeChoudens, V., Y.-K. Zhang, and L. A. Gonzalez, Modeling of Three-Dimensional Groundwater Flow in the Kathmandu Valley, Nepal, American Geophysical Union 2000 Fall Meeting, San Francisco, Dec. 15-19, 2000.
Shinall, L., J.M. Gannon, and Y.K. Zhang, Hydrogeology and Wellhead Protection Area Delineations: Rock Valley, Sioux County, Iowa, Geological Society of American 2000 Annual Meeting, Reno, Nevada, Nov. 13-17, 2000.
Zhang, Y.-K. and V. di Federico, Non-Ergodic Solute Transport in Heterogeneous Porous Media with a Multi-Scale Structure, American Geophysical Union 1999 Fall Meeting, San Francisco, Dec. 13-17, 1999.
Shinall, L., J.M. Gannon, and Y.K. Zhang, Hydrogeology and Wellhead Protection Area Delineations: Rock Valley, Sioux County, Iowa, American Geophysical Union 1999 Fall Meeting, San Francisco, Dec.13-17, 1999.
Lovanh, N., R. Keller, Y.K. Zhang, and P. Alvarez, The Effect of Biodegradation Rate Coefficients on Intrinsic Remediation: Evaluation of Field Data, The 8th Biocatalysis and Bioprecessing Conference, October 25-27, 1999.
Lovanh, N., Y.-K. Zhang, and P. Alvarez, Statistics and effect of first-order biodegradation rate coefficient on intrinsic remediation of groundwater contamination, The 6th International Petroleum Environmental Conference, October, 1999
Zhang, Y.-K., V. di Federico, and B.-M. Seo, Non-Ergodic Solute Transport in Nonuniform Groundwater Flow, American Geophysical Union 1998 Fall Meeting, San Francisco, Dec. 6-10, 1998.
Zhang, Y.-K. and Federico, V.D., Non-Ergodic Solute Transport in Heterogeneous Porous: Media: Influence of Multiscale Structure, Shlomo Neuman’s 60th birthday mposium, Tucson, AZ, Oct., 1998.
Zhang, Y.-K. and R. Keeler, Hydrogeology and Groundwater Modeling of the Big Spring Basin, Iowa, USA, 1998 Western Pacific Geophysics Meeting, Taipei, Taiwan, July 21-24, 1998
Zhang, Y.-K. and J. Lin, Monte Carlo Simulations of Non-Ergodic Solute Transport in Physically and Chemically Heterogeneous Aquifers, American Geophysical Union 1997 Fall Meeting, San Francisco, Dec. 8-12, 1997.
Federico, V.D. and Y.-K. Zhang, Solute Transport in Heterogeneous Porous Media with Long-range Correlations, American Geophysical Union 1997 Fall Meeting, San Francisco, Dec. 8-12, 1997.
Zhang, Y.-K. and J. Lin, Stochastic Analysis and Simulation of Solute Transport in Physically and Chemically Heterogeneous Aquifers, 42nd Annual Midwest Groundwater Conference, Coralville, Iowa, Oct. 22-24, 1997.
Zhang, Y.-K. and J. Lin, Monte Carlo Simulations of Non-Ergodic Solute Transport in Random Porous Media, 27th IAHR Congress, Aug., 1997.
Keeler, R. and Y.-K. Zhang, Modeling of Groundwater Flow in the Big Spring Basin, Clayton County, Iowa, 42nd Annual Midwest Groundwater Conference, Coralville, Iowa, Oct. 22-24, 1997.
Zhang, Y.-K. and J. Lin, Stochastic Analysis and Simulation of Solute Transport in Physically and Chemically Heterogeneous Aquifers, 1997 North Central GSA Abstracts with Programs, 1997.
Keeler, R. and Y.-K. Zhang, Modeling of Groundwater Flow in a Fractured-Karst Aquifer in the Big Spring Basin, Iowa, 1997 North-Central GSA Abstracts with Programs.
Zhang, Y.-K. and J. Lin, Numerical Simulations of Nonergodic Solute Transport in Heterogeneous Aquifers, EOS, Vol.77, No. 46, pp. F263, 1996.
Zhang, Y.-K., Scale Effect and Stochastic Theories of Groundwater Pollution in Heterogeneous Aquifers, Abstracts of 30th International Geological Congress, Vol. 3, p.276, 1996
Zhang, Y.-K. and D. Zhang, A Negative Dispersivity: Can a Plume Shrink?, EOS, Nov. 7, pp. F180, 1995.
Zhang, Y.-K., An Evaluation of Nonlinearity in the Second Spatial Moments of the Ensemble Mean Concentration in Aquifers, AGU Fall Meeting, 1994.
Zhang, Y.-K., Application of the Double-Porosity Model and Finite Element Method to a Fractured-Karst Aquifer in Makeng, China, Western Pacific Geophysics Meeting, 1994.
Zhang, Y.-K. and M. Shao, A Simple Method for Determining Unsaturated Hydraulic Conductivity, AGU 1993 Fall Meeting.
Neuman, S.P. and Y.-K. Zhang, Eulerian-Lagrangian Theory of Transport in Space-Time Nonstationary of Velocity Fields, AGU 1992 Fall Meeting.
Ayers, J.F, Y.-K. Zhang, and D.C. Gosselin, Water-Sampling Regime Around High-Capacity Wells: An Analysis, GSA 1991 Annual Meeting.
Zhang, Y.-K., Time-Dependent Nonlocal dispersion in Unsaturated Media with Statistically Anisotropic Hydraulic Conductivities, AGU 1991 Fall Meeting.
Zhang, Y.-K., Time-Dependent Nonlocal dispersion in the Vadose Zone, Workshop on Characterization of Transport Phenomena in the Vadose Zone, sponsored by the Soil Science Society of America and AGU, 1991.
Zhang, Y.-K., Macrodispersion in the Vadose Zone; Statistically Isotropic Media, AGU 1990 Fall Meeting.
a. External
2005-2008 PI, A study of temporal variations of groundwater levels, recharge, and baseflow: Does scaling exist in these processes? $180,000.00, NSF.
2005 Modeling Sediment Transport in Iowa Rivers, $9,500.00, awarded by the Iowa Department of Natural Resources. in transaction.
2003-2004 PI, Modeling Sediment Transport in Iowa Rivers, $16,000.00, awarded by the Iowa Department of Natural Resources.
1999-2001 Co-PI, Iowa RBCA Tier-3 Model Selection and Parameter Estimation, $103,755.00, awarded by the Iowa Comprehensive Petroleum Underground Storage Tank Fund Board, the state of Iowa.
1998 Co-PI, The Evaluation of the Iowa Tier-2 Model Based on the Benzene Plume Dimensions and the Literature Search, $17,080 awarded by Iowa State Government.
1992-1995 PI, Stochastic Analysis and Simulation of Time-Dependent Solute Transport in Soils, $168,000.00 awarded by U.S. Department of Agriculture.
1992-1995 Co-PI, Evaluation of Irrigation Wells as Sampling Mechanisms, $122,102.00 awarded by U.S. Department of Agriculture.
1992-1994 PI, Effect of Local Anisotropy of Hydraulic Conductivities on Non-local Dispersion in Aquifers, $25,500.00 awarded by U.S. Geological Survey.
1991-1993 Co-PI, Performance Assessment of the Low-Level Radioactive Nuclear Waste Disposal Facility at Butte, Nebraska, $30,000.00 provided by Nebraska Low-Level Waste Disposal Program.
b. Internal
2005 PI, Increasing Streamflow and Baseflow in the Mississippi River Basin since 1940s: Effect of Climate or Land Use Change, CGRER Seed Grant, $24,386.00, the University of Iowa.
2004 PI, Carver Scientific Research Initiative, $14,752.00, the University of Iowa.
2004 PI, The Obermann Center for Advanced Studies Interdisciplinary Research Grant, Summer, 2004, $12,000.00, the University of Iowa.
2002 PI, Proposal to Computerize Room 231, TH for Computer Fee Funds, $45,500.00 awarded by College of Liberal Arts & Sciences, the University of Iowa.
1995 PI, Modeling Groundwater contamination by Agricultural Chemicals at Big Spring, Iowa, $10,000.00 awarded by the Obermann Center for Advanced Studies Interdisciplinary Research Grant, University of Iowa.
1997 PI, The Obermann Center for Advanced Studies Interdisciplinary Research Grant, Summer, 1997, $10,000.00, the University of Iowa.
*+Li, Z. and Y.-K. Zhang, Quantifying fractal dynamics of groundwater systems with detrended fluctuation analysis, submitted to J. Hydrol. in revision.
Jin, X., L. Wan, Y.-K. Zhang, Z. Zue, and Y. Yin, A Study of Relationship between Vegetation Growth and Groundwater in Yinchuan Plain, China, submitted to Frontier in Earth Sciences, Nov., 2006
Schilling, K., M. Tomer, Y-K Zhang, T. Weisbrod, P. Jacobson, and C. Cambardella, Hydrogeologic Controls on Nitrate Transport in a Small Agricultural Catchment, Iowa, in review.
**Lachhab, A., Y.-K. Zhang, and M. V.I. Muste, Three dimansional particle tracking in matched-index-refraction homogeneous and heterogeneous porous media, submitted to Experiments in Fluids, in review
*+Li, Z. and Y.-K. Zhang, Multiscale Entropy Analyses of Mississippi River Flow, Geophysical Research Letters, in review.
Jin, X.M., L. Wan, M. Schaepman, and Y.-K. Zhang, Impact of Economic Growth on Vegetation Cover in China Based on GIMMS NDVI, Submitted to International Journal of Remote Sensing, May, 2006
2007 – 2010 Collaborative Research: An Integrated Study of Effects of Land Use and Land Cover Change on Watershed Hydrology for Sustainable Environment, Submitted to NSF BES-Engineering program, $358,780., September 15, 2006.
IV. SERVICE
c. Reviewer for Journals and State and Federal Agencies