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Steven Knobbe

Research Assistant, Geohydrology, Kansas Geological Survey

Address Information:

Kansas Geological Survey
1930 Constant Avenue
Lawrence, KS 66047-3724
Phone: (785) 864-2111
Fax: (785) 812-0208


Professional Experience:

Interest and Expertise:

High-resolution site characterization methods, including fiber optic distributed temperature sensing (FO-DTS) for stream-aquifer interactions and aquifer characterization, and direct push (DP) tools, such as DP permeameter (DPP), DP injection logger (DPIL), high-resolution K (HRK) probe, and DP nuclear magnetic resonance (NMR) probe.

Recent Papers:

Knight, R., D.O. Walsh, J.J. Butler, Jr., E. Grunewald, G. Liu, A.D. Parsekian, E.C. Reboulet, S. Knobbe, and M. Barrows (2015), NMR logging to estimate hydraulic conductivity in unconsolidated aquifers, Groundwater, in press.

Walsh, D., Turner, P., Grunewald, E., Zhang, H., Butler, J. J., Reboulet, E., Knobbe, S., Christy, T., Lane, J. W., Johnson, C. D., Munday, T. and Fitzpatrick, A. (2013), A Small-Diameter NMR Logging Tool for Groundwater Investigations. Groundwater, 51: 914-926. doi: 10.1111/gwat.12024

Liu, G., S. Knobbe, and J. J. Butler, Jr. (2013), Resolving centimeter-scale flows in aquifers and their hydrostratigraphic controls, Geophys. Res. Lett., 40, 1098-1103, doi:10.1002/grl.50282.

Liu, G., J. J. Butler, Jr., E. C. Reboulet, and S. Knobbe (2012), Hydraulic conductivity profiling with direct push methods (invited), Grundwasser, 17(1), doi: 10.1007/s00767-011-0182-9.

Bohling, G. C., G. Liu, S. Knobbe, E. C. Reboulet, D. W. Hyndman, P. Dietrich, and J. J. Butler, Jr. (2012), Geostatistical analysis of centimeter-scale hydraulic conductivity variations at the MADE site, Water Resour. Res., 48, W02525, doi: 10.1029/2011WR010791.

Wang, X, C. Zheng, G. Liu, W. Li, S. Knobbe, E. C. Reboulet, and J. J. Butler, Jr. (2012), A review of recent developments in using direct-push technologies for rapid, high-resolution hydraulic conductivity measurements (in Chinese), Hydrogeology and Engineering Geology, 39(1).

Liu, G., J.J. Butler, Jr., G.C. Bohling, E. Reboulet, S. Knobbe, and D.W. Hyndman (2009), A new method for high-resolution characterization of hydraulic conductivity, Water Resour. Res., 45, W08202, DOI:10.1029/2009WR008319.

Recent Abstracts:

Steve Knobbe, Gaisheng Liu, B. Konetchy, Ed Reboulet, Don Whittemore, and J.J. Butler, Jr., Groundwater Flow Characterization using Distributed Temperature Sensing (abstract), 23rd Annual Kansas Hydrology Seminar, Nov. 21, 2014, Topeka, KS.

Gaisheng Liu, Steven Knobbe, Edward C Reboulet, Donald O Whittemore, Falk Händel and James J. Butler Jr, A new artificial recharge approach using direct push wells for aquifer storage and recovery in near-surface aquifers: A case study in the Lower Republican River basin , Kansas (abstract), 2014 AGU Fall Meeting, Dec. 15-19, 2014, San Francisco, CA.

Steve Knobbe, Gaisheng Liu, James J. Butler Jr. and Edward C. Reboulet, A New Thermal Method for Characterizing Groundwater Flux Variations (abstract), NGWA Ground Water Summit 2012, May 6-10, 2012, Garden Grove, CA.

G. Liu, S. Knobbe, J.J. Butler, Jr., and E.C. Reboulet, A New Thermal Method for High-resolution Aquifer Characterization (abstract), AGU Fall Meeting 2011, Dec. 5-9, 2011, San Francisco, CA.

G.C. Bohling, G. Liu, S. Knobbe, E. Reboulet and J.J. Butler, Jr., A modified approach for direct-push hydraulic profiling in formations of moderate to high hydraulic conductivity (abstract), AGU Fall Meeting 2011, Dec. 5-9, 2011, San Francisco, CA.

Geofferey C. Bohling, Gaisheng Liu, Steven J. Knobbe, Edward C. Reboulet, David W. Hyndman, Peter Dietrich, and James J. Butler, Jr., Comparative Geostatistical Analysis of Flowmeter and Direct-Push Hydraulic Conductivity Profiles at the MADE Site (abstract), AGU Fall Meeting, December 13-17, 2010, San Francisco, CA.

Bohling, G.C., G. Liu, J.J. Butler, Jr., E.C. Reboulet, and S.J. Knobbe., Centimeter-scale characterization of hydraulic conductivity at the MADE Site using direct-push techniques (abstract), Association of Environmental and Engineering Geologists Annual Meeting, Program with Abstracts, 2010.

Butler, J.J., Jr., G. Liu, S. Knobbe, G.C. Bohling, and E.C. Reboulet, A new direct-push method for high-resolution characterization of spatial variations in hydraulic conductivity (abstract), 2010 Ground Water Summit and 2010 Ground Water Protection Council Spring Meeting, Abstract #7174, 2010.

Kansas Geological Survey, Geohydrology Section
Updated Feb. 19, 2015
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