Geoffrey C. Bohling
Assistant Scientist, Geohydrology, Kansas Geological Survey
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
- Continuing research on aquifer characterization and contaminant transport
- 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