MS 01-13.Pdf
Unltod St¡toc DopaÉmcnt o,f Agrlcullurc ONRCS Natural Resources Conservation Service National Soil Survey Center Federal Building, Room 152 100 Centennial Mall North Phone: (402) 437-549e Lincoln. NE 68508-3866 FAX: (402) 437-5336 SUBJECT: MGT - Trip Report - Geophysical Training and April12,2013 Field Assistance TO: Homer L. Wilkes File Code: 330-20-7 State Conservationist, NRCS Jackson, Mississippi Purpose: To provide training and technical assistance in the use of electromagnetic induction (EMI) and ground-penetrating radar (GPR) in Yazoo County, Mississippi, while assessing soil properties and cultural resources at a registered historical archaeological site (Lake GeorgeÆIolly Bluff Site - 22Y2557). Participants: David Clay, Engineer (Retired), NRCS, Wilkesboro, NC James Curtis, Assistant State Soil Scientist, NRCS, Jackson, MS Rachel Stout-Evans, MLRA Project Leader, NRCS, Metcalfe, MS Cliff Jenkins, Cultural Resources Specialist, NRCS, Jackson, MS Delaney Johnson, State Soil Scientist, NRCS, Jackson, MS Wes Tuttle, Soil Scientist (Geophysical), NRCS, NSSC, Wilkesboro, NC Richard Vaught, MLRA Project Leader, NRCS, Glenwood, AR Activities: All field and office activities were completed on January 25-28,2013. Summary: 1. All participants were given the opportunity to operate, complete field surveys, and evaluate the use of the EM38 meter for soil survey investigations. 2. Electromagnetic induction (EMI) techniques can be used beneficially in the Mississippi Delta Region to show changes in soil physical properties across the landscapes, as demonstrated at the archaeological site (Lake George/flolly Bluff Site -22Y2557). The tools worked very well in predicting textural changes across the survey area. Higher apparent conductivity was associated with increased clay and moisture in the soil profile.
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