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Sub-Surface Sensing 
Ground-penetrating radar and electromagnetic induction for mapping and exploration.


Recent Publications

Ground-Penetrating Radar Water Content Mapping of Golf Course Green Sand Layers Allred, B., R. S. Freeland, K. Grote, E. McCoy, L. Martinez, and D. Gamble.  2016.  Journal of Environmental and Engineering Geophysics, JEEG, December 2016, Volume 21, Issue 4, pp. 215229.

Geophysical Methods Allred, B., V. Adamchuk, R. Rossel, J. Doolittle, R. S. Freeland, K. Grote, and D. Corwin.  2016.  Encyclopedia of Soil Science, Third Edition, Chesworth, W. (Ed.). (2008). Encyclopedia of soil science (Vol. 207). Berlin: Springer.

Surveying the Near-Surface Fibrous Roots of The Orange Tree With 3-D GPR Freeland, R. S.  2016.  Applied Engineering in Agriculture, 32(2): 145-153.

Performance of Hybrid and Single-Frequency Impulse GPR Antennas on USGA Sporting Green Freeland, R. S., B. Allred, D. Gamble, L. Martinez, B. Jones, and E. McCoy.  2016.  Journal of Environmental and Engineering Geophysics, 21(2), 57-65.

Ground-penetrating radar mapping of near-surface preferential flow.  Freeland, R. S.  2008.  In: Handbook of Agricultural Geophysics. CRC Press, pp. 337-344.

Using ground-penetrating radar to evaluate soil compaction of athletic turfgrass fields.  Freeland, R. S., J. C. Sorochan, M.J. Goddard, and J. S. McElroy.  2008.  Appl. Eng. Agric. 24(4): 509-514.

Ground-penetrating radar mapping of agricultural landforms within the new Madrid Seismic Zone of the Mississippi Embayment.  Freeland, R. S., J. T. Ammons, and C.L. Wirwa.  2008.  Appl. Eng. Agric. 24(1): 115-122.

Using Ground-Penetrating Radar To Evaluate Soil Compaction And Organic Matter Within Athletic Turfgrass Fields.  Freeland, R. S., J. C. Sorochan, J. S. McElroy, and M. J. Goddard.  2007.  Applied Engineering in Agriculture, 26-Dec-2007 revise and resubmit.

Ground-Penetrating Radar Mapping Of Agricultural Landforms Within The New Madrid Seismic Zone Of The Mississippi Embaymen.  Freeland, R. S., J. T. Ammons, and C. L. Wirwa.  2007.  Am Society of Agricultural and Biosystems Engineering Paper number 073099.

GROUND-PENETRATING RADAR MAPPING OF AGRICULTURAL LANDFORMS WITHIN THE NEW MADRID SEISMIC ZONE OF THE MISSISSIPPI EMBAYMENT.  Freeland, R. S., J. T. Ammons, and C. L. Wirwa.  2007.  Manuscript IET-07069-2007.R1 accepted Applied Engineering in Agriculture, 25-Nov-2007. Proof accepted from editor on Jan. 10, 2008. (in press).

Investigation of a Fuzzy-Neural Network Application in Classification of Soils using Ground-Penetrating Radar Imagery.  Odhiambo, L. O., R. S. Freeland, R. E. Yoder, and J. W. Hines.  2004.  Applied Engineering in Agriculture, 20(1):1-9.

Identification of Subsurface Features that Affect Offsite Movement of Waterborne Contaminants through the Use of Soil Classification and Mapping Techniques, Electromagnetic Inductance (EM) and Ground-Penetrating Radar (GPR).  Raley, K. D.  2003.  M.S. Thesis, M.S. Thesis, PSS.