AHMED E. HASSAN

Associate Research Professor

EDUCATION:

Ph.D., Civil Engineering (Hydrology), Purdue University
M.S., Civil Engineering (Hydrology), Cairo University, Egypt
B.S., Civil Engineering, Cairo University, Egypt

PROFESSIONAL INTERESTS:

Dr. Hassan's recent interests include 1) stochastic analysis and modeling of groundwater flow and contaminant transport in the subsurface, 2) development of novel numerical approaches using evolutionary computational techniques, 3) development of approaches for groundwater model validation, and 4) design of cost-effective monitoring well networks for groundwater contaminated sites.

RESEARCH AREAS:

Hydrology of the Unsaturated Zone; Contaminant Transport; Hydrogeological Controls on Availability and Quality of Ground Water; Integrated Watershed System

JOURNAL ARTICLES

Botros, F.; Hassan, A.; Reeves, D.M.; Pohll, G.M.; 2008 (inpress).

On mapping fracture networks onto continuum. Water Resources Research.

Bekhit, Hesham; Hassan, Ahmed; 2007.

Subsurface Contaminant Transport in the Presence Of Colloids: Effect of Nonlinear and Nonequilibrium Interactions. Water Resources Research. v.43.

Bekhit , H.M.; Hassan, A.; Harris-burr, R.D.; Papelis, C.; 2006.

Experimental and Numerical Investigations of Effects of Silica Colloids on Transport of Strontium in Saturated Sand Columns. Environmental Science and Technology. v.17. s.40. pp.5402-5408.

Mohamed, M.M.; Hatfield, K.; Hassan, A.; 2006.

Monte Carlo Evaluation of Microbial-Mediated Contaminant Reactions in Heterogeneous Aquifers. Advances in Water Resources. v.8. s.29. pp.1123-1139.

Hassan, A.; 2006.

Developing a Long-term Monitoring Network under Uncertain Flow Paths. Ground Water. v.5. s.44. pp.710-722.

Bekhit, H.; Hassan, A.; 2005.

Two-Dimensional Modeling of Contaminant Transport in Porous Media in the Presence of Colloids. Advances in Water Resources. v.12. s.28. pp.1320-1335.

Bekhit, H.M.; Hassan, A.; 2005.

Stochastic Modeling of Colloid-Contaminant Transport in Physically and Geochemically Heterogeneous Porous Media. Water Resources Research. s.41.

Hassan, A.; 2004.

A methodology for validating numerical groundwater models. Ground Water. v.3. s.42. pp.347-362.

Hassan, A.; 2004.

Validation of numerical groundwater models used to guide decision making. Ground Water. v.2. s.42. pp.277-290.

Huang, H.; Hassan, A.; Hu, B.; 2003.

Monte Carlo Study of Conservative Transport in Heterogeneous Dual-porosity Media. Journal of Hydrology. v.274. s.274. pp.229-241.

Hassan, A.; Mohamed, M.; 2003.

On Using Particle Tracking Methods to Simulate Transport in Single-Continuum and Dual Continua Porous Media. Journal of Hydrology. v.275. s.275. pp.242-260.

CONFERENCE ABSTRACTS

Botros, Farag; Hassan, Ahmed; Pohll, Greg; 2007.

Block-effective Dispersivity in Heterogeneous Media: Effects of Porosity and Distribution Coefficient Variability. International Symposium on Technology and Society: Risk, Uncertainty, Vulnerability. IEEE. Las Vegas, Nevada.

Chapman, Jenny; Pohll, Greg; Hassan, Ahmed; Pohlmann, Karl; 2007.

Using Uncertainty to Guide Characterization, Closure, and Long-term Management of an Underground Nuclear Test Site. International Symposium on Technology and Society: Risk, Uncertainty, Vulnerability. IEEE. Las Vegas, Nevada.

Chapman, J.B.; Pohll, G.M.; Hassan, A.; Pohlmann, K.F.; 2007.

Using Uncertainty to Guide Characterization, Closure, and Long-term Management of an Underground Nuclear Test Site. Institute of Electrical and Electronics Engineers. June 1-2, 2007, Las Vegas, NV.

Hassan, A.; Botros, F.; Reeves, D.M.; Pohll, G.M.; 2006.

On the continuum representation of fracture networks. American Geophysical Union. San Francisco, CA.

Botros, F.; Hassan, A.; Pohll, G.M.; 2006.

Block-effective Macrodispersivity in Heterogeneous Media with Spatially Varying Porosity. AGU. San Francisco, CA.

Hassan, A.; Bekhit, H.; Chapman, J.B.; 2006.

Uncertainty Reduction for Parameters of a Seawater Intrusion Model using Markov Chain Monte Carlo. Denmark.

Botros, F.; Hassan, A.; Pohll, G.M.; 2006.

Assessment of Hydraulic Conductivity Upscaling Techniques and Associated Uncertainty. Denmark.

Hassan, A.; Chapman, J.B.; 2005.

Verification and Uncertainty Reduction for Amchitka Underground Nuclear Test Models using Bayesian Conditioning. American Association for the Advancement of Science. Kodiak, AK.

Hassan, A.; Bekhit, H.; 2003.

Stochastic modeling of colloid-facilitated contaminant transport in heterogeneous porous media. International groundwater modeling center, Colorado School of Mines. Golden, CO.

Hassan, A.; 2003.

Linking the Model Validation Process and Long-Term Monitoring Design for Central Nevada Test Area. American Geophysical Union. San Francisco, CA.

Shafer, D.S.; Chapman, J.B.; Hassan, A.; Pohll, G.M.; Pohlmann, K.F.; Young, M.H.; 2003.

Long-term stewardship and risk management for inactive nuclear test sites in the United States. Oxford, England.

Hassan, A.; Pohll, G.M.; Pohlmann, K.F.; Chapman, J.B.; 2002.

Groundwater flow and transport modeling: Three approaches for three different environments. The International Conference on Water Resources Management in Arid Regions (WaRMAR). Kuwait.