Laurence R. (Larry) Bentley

Professor Department of Geocience University of Calgary Calgary Alberta T2N 1N4 Office: ES 262 Phone: (403) 220-4512 Fax: (403) 284-0074 Email: lbentley@ucalgary.ca

Ph.D. Princeton University Civil Engineering & Operations Research M.Sc. University of Hawaii Geology & Geophysics

Links

Teaching

• Geology 441. Field Techniques in Hydrogeology
• Geology 571. glgy571 Engineering Geology
• Geology 597. glgy597 Mathematical Models and Geostatistics
• Geology 605. Topics in Subsurface Flow and Transport
• Geology 639. Field Laboratory in Groundwater Hydrogeology




1996 Geology 441 Field Techniques in Hydrogeology Richmond, BC	MSc Marc Bowles, PhD Kevin Parks and Pr. Larry Bentley Graduation Day June, 1997

Current Research Projects

• Applications of near surface geophysics to to Hydrogeology
• Alpine geophysics
• Spontaneous potential as a method in contaminant studies
• Time-lapse electrical resistivity monitoring of salt at a remediation site
• Paskapoo aquifer system
• Integrated hydrogeologic-geophsical studies of remdiation of salt affected soil

Student Opportunities

• Hydrogeology and Geophysics
Near surface application of near surface geophysics (e.g. electrical resistivity imaging (ERI), induced polarization (IP) and spontaneous potential (SP), ground-penetrating radar (GPR)) to hydrogeologic problems. Students interested in these projects should have either a background in geophysics and be willing to study hydrogeology or a background in hydrogeology with an interest in studying near surface geophysics.
• Stochastic Modeling
We are developing a new conceptual model of the Paskapoo aquifer system. The new paradigm requires stochastic modeling. I am looking for students who want to use statistical methods, geologic modeling and hydrogeologic modeling to unravel the key elements controling the response of the hydrogeologic system.

• Geophysical Inversion
We are looking for ways to simultaneously invert several types of geophysical data at once and hydrogeophysical inversion. That is joint inversion of hydrogeologic models and geophysical data.

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Selected Publications

Rayner, S.F., L.R. Bentley and D.M. Allen, "Constraining aquifer architecture with electrical resistivity imaging in a fractured geological setting", JEEG, 12(4), 323-335 [2007].

Moncrieff, J.E., L.R. Bentley and H. Calderon Palma, "Investigating pesticide transport in the Leon-Chinandegea aquifer, Nicaragua", HYDROGEOLOGY J., DOI 10.107/s10040-007-0229-2 [2007].

Hayley, K., L.R. Bentley, M. Gharibi and M. Nightingale, "Low temperature dependence of electrical resistivity: Implications for near surface geophysical monitoring", GEOPHYS. RES. LET., 34, LI18402, doi10.1029/2007GL031124 [2007].

Calderon Palma, H. an L.R. Bentley, "A regional-scale groundwater flow model for the Leon-Chninandega aquifer, Nicaragua", HYDROGEOLOGY J., DOI 10.1007/s10040-007-0197-6 [2007]

Zou, Y., L.R. Bentley, L.R. Lines and D. Coombe, "Integration of seismic methods with reservoir simulation, Pikes Peak heavy-oil field, Saskatchewan", THE LEADING EDGE, 25, 764-781 [2006].

Mrklas, O., L.R. Bentley, S.R.D. Lunn and A. Chu, "Principal component analysis of groundwater chemistry data during enhanced bioremediation", WATER, AIR AND SOIL POLLUTION, 169, 395-411 [2006].

Zou, Y., L.R. Bentley and L.R. LInes, "Reservoir characterization by combining time-lapse seismic analysis with reservoir simulation" , CSEG RECORDER, 32-37, January [2005].

Gharibi, M. and L.R. Bentley, "Resolution of 3-D electrical resistivity images from inversions of 2-D orthogonal lines," JEEG, 10, 339-349 [2005].

Mrklas, O., A. Chu, S. Lunn and L.R. Bentley, "Degradation of monoethanolamine, ethylene glycol, triethylene glycol in laboratory bioreactors" , WATER, AIR AND SOIL POLLUTION, 159, 249-263, [2004].

Ndegwa, A.W., R.C.K. Wong, A. Chu, L.R. Bentley and S.R.D. Lunn, "Degradation of monoethanolamine in soil" ,J. ENVIRON. ENG. SCI., 3, 137-145 [2004].

Berthold, S., L.R. Bentley and M. Hayashi, "Integrated hydrogeological and geophysical study of depression-focused groundwater recharge in the Canadian prairies," WAT. RESOUR. RES., 40, doi:10.1029/2003WR002982 [2004].

Bentley, L.R. and M. Gharibi, "Two and three-dimensional electrical resistivity imaging at a heterogeneous remediation site," GEOPHYS, 69(03), 674-680 [2004].

Wong, RCK, L.R. Bentley, A.W. Ndegwa, A. Chu, M.Gharibi and S.R.D. Lunn, "Biodegradation of monoethanolamine in soil monitored by electrical conductivity measurement: an observational approach," CAN. GEOTECH. J., 41, 1026-1037 [2004].

Zou, Y. and L.R. Bentley, "Time-lapse well log analysis, fluid substitution and AVO," THE LEADING EDGE, 22, 550-556 [2003].

Meads, L., L.R. Bentley and C.A. Mendoza, "Application of electrical resistivity imaging to the development of a geological model for a proposed Edmonton landfill site," CAN. GEOTECH. J., 40, 551-558 [2003].

Bentley, L.R. and N.M. Trenholm, "The accuracy of water table elevation estimates from ground penetrating radar", JEEG, 7, 37-53 [2002]

Anfort, S.J., S. Bachu and L.R. Bentley, "Regional-scale hydrogeology of the upper Devonian-lower Cretaceous sedimentary succession, central Alberta Basin, Canada", AAPG BULLETIN, 85, 637-660 [2001]

Parks, K.P., L.R. Bentley and A.S. Crowe, "Capturing more geological realism in stochastic simulations of rock systems with Markov statistics and simulated annealing", J. OF SEDIMENTARY RES., 74(4), 803-813 [2000]

Bowles, M., L.R. Bentley, B. Hoyne and D.A. Thomas, "In-situ groundwater remediation using the trench and gate system," GROUND WATER, 38(2), 172-181 [2000]

Fennell, J. and L.R. Bentley, ``Distribution of sulphate and organic carbon in a prairie till setting: natural versus industrial sources'' , WAT. RESOUR. RES., 34(7), 1781-1794 [1998]

Bentley, L.R., ``Influence of the regularization weighting matrix on parameter estimates'' , ADVANCES IN WAT. RESOUR., 20(4), 231-247 [1997].

Parks, K.P. and L. R. Bentley, ``Derivative-assisted evaluation of well yields in a heterogeneous aquifer'' , CANADIAN GEOTECHNICAL JOURNAL, 33(3), 458-469 [1996].

Parks, K. P. and L. R. Bentley, `` Enhancing data worth of EM survey in site assessment by cokriging'' , GROUND WATER, 34(4), 597-604 [1996].

Bentley, L.R., ``A note on the least squares solution of the groundwater flow equation'' , NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS, 10, 525-532 [1994].

Bentley, L.R., ``Solving and calibrating groundwater flow systems with the penalty method,'' STOCHASTIC DIFFERENTIAL EQUATIONS WITH APPLICATIONS IN HYDROLOGY, Hipel, K. W. (ed.), Kluwer Academic Publishers, Dordrecht, The Netherlands, 55-67 [1994].

Bentley, L.R., ``Least squares solution and calibration of steady state groundwater flow systems,'' ADVANCES IN WATER RESOURCES, 16, 137-148 [1993].

Bentley, L.R. and G.M. Kieper, ``Verification of the Princeton Transport Code (PTC)'', in ENGINEERING HYDROLOGY, proceedings of the symposium sponsored by the Hydraulics Division of the American Society of Civil Engineers, San Francisco, California, July 25-30, 1037-1042 [1993].

Bentley, L.R. and G.F. Pinder, ``Eulerian-Lagrangian solution of the vertically averaged groundwater transport equation,'' WATER RESOURCES RESEARCH, 28(11), 3011-3020 [1992].

Bentley, L.R. and G.F. Pinder, ``Eulerian-Lagrangian least squares collocation in multi-spatial dimensions,'' in COMPUTATIONAL METHODS IN GEOSCIENCE, Fitzgibbon and Wheeler (ed.s), 111-141 Society for Industrial and Applied Mathematics, Philadelphia, PA [1992]

Bentley, L.R. and G.F. Pinder, ``A least squares method for solving the mixed form of the groundwater flow equations,'' INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 14, 729-751 [1992].

Bentley, L.R., A. Aldama and G.F. Pinder, ``Fourier analysis of the Eulerian-Lagrangian least squares collocation method,'' INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 11, 427-444 [1990].

Bentley, L.R., G.F. Pinder and I. Herrera, ``Solution of the advective-dispersive transport equation using a least squares collocation, Eulerian-Lagrangian method'', NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS, 5, 227-240 [1989].

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Last Update: April 4, 2006



Dr. Laurence R. Bentley
Department of Geology and Geophysics
University of Calgary
Calgary, Alberta T2N 1N4

lbentley@ucalgary.ca