Geoffrey C. Bohling

Address Information

Kansas Geological Survey

1930 Constant Avenue

Lawrence, KS 66047-3726

Phone: (785) 864-2093

Fax: (785) 864-5317

E-mail: geoff@kgs.ku.edu

Education

• Ph.D. (Hydrogeology), University of Kansas, 1999
• M.S. (Hydrogeology), University of Wisconsin-Madison, 1988
• B.S. (Geophysics) / B.A. (English), University of Kansas, 1986 (with highest distinction)

Interests and Expertise:

• Statistical applications in the earth sciences
• Statistical and scientific programming in Java, VBA/Excel, Fortran 90, and C
• Exploratory data analysis and statistical modeling with S/S-Plus/R and SAS
• Statistical classification (data mining) techniques
• Development of petrophysical data analysis techniques
• Numerical modeling of subsurface flow and transport
• Inverse analysis and uncertainty assessment for flow and transport models
• Analysis of compositional data

Additional Computer Skills:

• Familiar with Python, Matlab, ArcGIS, MS Access, SQL, Oracle
• Web development in HTML, Java, Perl/CGI, and SVG
• Experience with Windows, UNIX, and Macintosh

Professional Experience:

• Assistant Scientist, Kansas Geological Survey, 1999-present
  • Assisting with development of a geologic model for a large gas field
    • Automating data processing procedures
    • Exploring combined application of neural network and Markov chain simulation to subsurface modeling
  • Continuing research on aquifer characterization and contaminant transport
    • Developing data inversion techniques for hydraulic tomography
    • Developing Java application and web pages for the Interactive Ground-water Tutor
  • Developing ADP and other data analysis and visualization tools for CHRONOS
  • Providing guest lectures for Data Analysis in Engineering and Natural Science
  • Developing methodologies and software for petrophysical data analysis, including:
    • The Oz Machine, a Java applet for generation of synthetic stratigraphic sequences and corresponding log suites
    • Kipling.xla: An Excel add-in for nonparametric regression and classification
    • Petrophysical analysis and data mining components of GEMINI, web-based software for well log analysis and reservoir characterization
  • Performing statistical and geostatistical analyses of High Plains aquifer water levels
• Research Staff, Mathematical Geology Section, Kansas Geological Survey, 1988-1998
  • Pursued research on aquifer characterization and contaminant transport
  • Pursued research on classification problems in the earth sciences, including regionalized classification and non-parametric classification techniques
  • Participated in numerous projects involving statistical and geostatistical analysis of earth science data sets
  • Developed, documented, and presented software, including:
    • PfEFFER (well log analysis)
    • GSLIB-style programs for regionalized classification
    • Simulation of oil field discovery sequences
    • SUPRPUMP (aquifer test analysis)
• Graduate Research Assistant, Department of Geology and Geophysics, University of Wisconsin-Madison, 1987-1988
  • Investigated use of ground penetrating radar to map water table
• Student Research Assistant, Geophysics and Geochemistry Section, Kansas Geological Survey, 1985-1986
  • Developed a program for simulating hydrocarbon maturation in a developing sedimentary basin
• Laboratory Teaching Assistant, Department of Physics and Astronomy, The University of Kansas, 1984-1985

Selected Professional Activities:

• Provided extensive technical and editorial assistance for Statistics and Data Analysis in Geology, Third Edition by John C. Davis
• Editorial Board Member, Computers & Geosciences, 2004-Present
• Treasurer, International Association for Mathematical Geology, 2000-2004
• Book Review Editor, Computers & Geosciences, 1996-2000

Selected Publications:

Peer-reviewed Journals

• Bohling, G. C., 2005, Chronos Age-Depth Plot: A Java application for stratigraphic data analysis, Geosphere, vol. 1, no. 2., p. 78-84, doi:10.1130/GES00009.1.
• Bohling, G. C., X. Zhan, J. J. Butler, Jr., and L. Zheng, 2002, Steady-shape analysis of tomographic pumping tests for characterization of aquifer heterogeneities, Water Resources Research, vol. 38, no. 12, 1324, doi:10.1029/2001WRR001176.
• Bohling, G. C., and J. J. Butler, Jr., 2001, lr2dinv: A finite-difference model for inverse analysis of two-dimensional linear or radial groundwater flow, Computers & Geosciences, vol. 27, no. 10, p. 1147-1156.
• Butler, J.J., Jr., McElwee, C., and Bohling, G., 1999, Pumping tests in networks of multilevel sampling wells: motivation and methodology: Water Resources Research, vol. 35, no. 11, p. 3553-3560. [Abstract]
• Harff, J., G. C. Bohling, R. Endler, J. C. Davis, and R. A. Olea, 1999, Gliederung holozäner Ostseesedimente nach physikalischen Eigenschaften [Structure of Holocene sediments from the Baltic Sea according to petrophysical properties], Petermanns Geographische Mitteilungen, vol. 143, p. 50-55.
• Bohling, G. C., J. C. Davis, R. A. Olea, and J. Harff, 1998, Singularity and nonnormality in the classification of compositional data, Mathematical Geology, v. 30, no. 1, pp. 5-20.
• Bohling, G. C., 1997, GSLIB-style programs for discriminant analysis and regionalized classification, Computers & Geosciences, v. 23, no. 7, pp. 739-761. (Code available here.)
• McElwee, C. D., G. C. Bohling, and J. J. Butler, Jr., 1994, Sensitivity analysis of slug tests I: The slugged well, Journal of Hydrology, v. 164, pp. 53-67.
• McElwee, C. D., J. J. Butler, Jr., G. C. Bohling, and W. Liu, 1994, Sensitivity analysis of slug tests II: Observation wells, Journal of Hydrology, v. 164, pp. 69-87.
• Butler, J. J., Jr., G. C. Bohling, Z. Hyder, and C. D. McElwee, 1994, The use of slug tests to describe vertical variations in hydraulic conductivity, Journal of Hydrology, v. 156, pp. 137-162.
• Bohling, G. C., and J. C. Davis, 1993, A Fortran program for Monte Carlo simulation of oil field discovery sequences, Computers & Geosciences, v. 19, no. 10, pp. 1529-1543.
• Bohling, G. C. and C. D. McElwee, 1992, SUPRPUMP: An interactive program for well test analysis and design, Ground Water , v. 30, no. 2, p. 262-268.

Open File Reports

• Bohling, G. C., and B. B. Wilson, Statistical and Geostatistical Analyses of the Kansas High Plains Water Table Elevations, 2005 Measurement Campaign, Kansas Geological Survey Open File Report 2005-6, 43 pp. [Online]
• Dubois, M.K., G.C. Bohling, and S. Chakrabarti, 2004, Comparison of Rock Facies Classification Using Three Statistically Based Classifiers, Kansas Geological Survey Open File Report 2004-64. [Online]
• Bohling, G. C., X. Zhan, M. D. Knoll, and J. J. Butler, Jr., Hydraulic Tomography and the Impact of A Priori Information: An Alluvial Aquifer Example, KGS Open-File Report 2003-71, 16 pp. [Online]
• Bohling, G. C., and M. K. Dubois, 2003, An Integrated Application of Neural Network and Markov Chain Techniques to Prediction of Lithofacies from Well Logs, KGS Open-File Report 2003-50, 6 pp. (PDF)
• Doveton, J. H., and G. C. Bohling, Reading the Rocks from Logs and Oz Machine Java Applet, KGS Open-File Report 2003-78. (web site)

Software

• Bohling, G.C., 2004, User's Guide to CHRONOS Age-Depth Plot Version 1.00, Kansas Geological Survey Open File Report 2004-55, 10 pp.
• Bohling, G. C., and J. H. Doveton, 2000, Kipling.xla: An Excel Add-in for Nonparametric Regression and Classification, Kansas Geological Survey.
• Bohling, G., J. Doveton, B. Guy, L. Watney, and S. Bhattacharya, 1998, PfEFFER 2.0 Manual, Kansas Geological Survey.
• Bohling, G. C., C. D. McElwee, J. J. Butler, Jr., and W. Liu, 1990, User's guide to well test design and analysis with SUPRPUMP version 1.0, KGS Computer Program Series 90-3, 95 pp.

Software Workshops and Presentations

• PfEFFER workshop, Kansas Geological Survey, Lawrence, KS, October 2004
• Kipling workshop, Amoco Petrophysics School, Tulsa, OK, January 1999
• PfEFFER workshop, Phillips 66, Odessa, TX, March 1998
• PfEFFER presentation in workshop at DOE's National Petroleum Technology Office, Tulsa, OK, February 1998
• PfEFFER workshop, Phillips 66, Bartlesville, OK, April 1997
• PfEFFER presentation in Petroleum Technology Transfer Council workshop, Golden, CO, February 1997
• SUPRPUMP presentation at Assessment and Mitigation at Hazardous Waste Sites: A Sixth Research Update, UCSD Extension, La Jolla, CA, July 1992

Proceedings Volumes

• Bohling, G. C., 1999, A radial-coordinate groundwater flow model for analysis of well tests in heterogeneous formations, in Proceedings of the Fifth Annual Conference of the IAMG, August 6-11, 1999, Trondheim, Norway, p. 693-697.
• Harff, J., G. C. Bohling, R. Endler, J. C. Davis, R. A. Olea, and W. Schwarzacher, 1999, Holocene sediments from the Baltic Sea basins as indicators for the paleoenvironment, in Proceedings of the Fifth Annual Conference of the IAMG, August 6-11, 1999, Trondheim, Norway, p. 195-200.
• Bohing, G. C., 1997, Canonical variate and principal component analyses of the Darss Sill granulometic data, in Proceedings of the Third Annual Conference of the IAMG, CIMNE, Barcelona, p. 163-168.
• Bohling, G. C., J. H. Doveton, and P. Hoth, 1997, Probabilistic classification and prediction of facies types in a mid-continent cretaceous deltaic-marine sequence from petrophysical log descriptors using a CMAC procedure, in Proceedings of the Third Annual Conference of the IAMG, CIMNE, Barcelona, p. 242-247.
• Bohling, G. C., J. Harff, and J. C. Davis, 1991, Regionalized classification: Ideas and applications, in Proceedings of the Fifth Canadian/American Conference on Hydrogeology: Parameter Identification and Estimation for Aquifer and Reservoir Characterization, National Water Well Association, pp. 229-242.

Book and Software Reviews

• Bohling, G. C., 2001, Review of "VARIOWIN: Software for Spatial Data Analysis in 2D" by Yvan Pannetier, Computers & Geosciences, v. 27, no. 1, pp. 125-127.
• Bohling, G. C., 2000, Review of "GS+ for Windows, Version 3.1" by Gamma Design Software, Computers & Geosciences, v. 26., no. 7, pp. 855-863.
• Bohling, G. C., 1998, Review of "EnvironmentalStats for S-Plus", Version 1.0, by Stephen P. Millard, Computers & Geosciences, v. 24, no. 6, pp. 597-602.
• Bohling, G. C., 1998, Review of "Introduction to Geostatistics: Applications in Hydrogeology", by P. K. Kitanidis, Computers & Geosciences, v. 24, no. 3, pp. 293-294.
• Bohling, G. C., 1998, Review of "Applied Contaminant Transport Modeling: Theory and Practice", by Chunmiao Zheng and Gordon D. Bennett, Computers & Geosciences, v. 24, no. 2, pp. 207-208.
• Bohling, G. C., 1994, Review of "GSLIB: Geostatistical Software Library and User's Guide" by Clayton V. Deutsch and A. G. Journel, Computers & Geosciences, v. 20, no. 6, pp. 1063-1064.

Grants and Contracts Awarded

• M. Dubois, T. Carr, A. Byrnes, G. Bohling, S. Battacharya, J. Doveton, Hugoton Asset Management Project: An Industry-University Study of Reservoir Systems in Southwest Kansas Hugoton Embayment and the Oklahoma Panhandle, January 2004 - December 2005, $360,000.
• Davis, J. C., G. C. Bohling, and R. A. Olea, Numerical Correlation of Late-Quaternary Sediments from the Baltic Sea, Kattegat, Skagerrak and North Atlantic with Regard to their Role as Paleoclimate Indicators, National Science Foundation, $13,920, 2001-2002.
• Watney, W. L., G. C. Bohling, S. Battacharya, K. Look, J. Doveton, T. Carr, and P. Gerlach, Geo-Engineering Modeling Through Internet Informatics (GEMINI), Department of Energy, $877,271, September 2000.
• Butler, J. J., Jr., G. C. Bohling, C. D. McElwee, and L. Zheng, A new method for identification of preferential flow paths at sites of groundwater contamination, Hydrologic Sciences Program, National Science Foundation, $226,538, August 1999.
• Butler, J. J., Jr., C. D. McElwee, and G. C. Bohling, Identification of Preferential Flow Paths at Sites of Groundwater Contamination, National Science Foundation, $49,998, 28 pp., May 1995.
• Butler, J. J., Jr., and G. C. Bohling, Assessment of hydraulic and tracer tests at the Waste Isolation Pilot Plant, Sandia National Laboratory, $9,767, Oct. 1995.

Kansas Geological Survey, Mathematical Geology Section
Updated Nov. 2005
Comments to webadmin@kgs.ku.edu
URL=http://www.kgs.ku.edu/General/Personnel/abc/bohling.html