Miller, B.V., Payne, J.D., Killion III, W.F., and Adams, R.F., 2019, Geophysical surveys and geospatial data for Bob Kidd Lake, Washington County, Arkansas: U.S. Geological Survey data release, https://doi.org/10.5066/P9I4W2P0.
Summary
DC Resitivity Methodology Direct current (DC) resistivity transects were surveyed using an IRIS Syscal Pro Switch 96 instrument (IRIS Instruments, Inc., Orléans, France). Steel electrodes were hammered into the ground at a fixed distance along the profile. These were connected to the instrument using copper wires and junction boxes. The number of electrodes on each profile and their spacing is shown below: Line 1: 180 electrodes, 5 meter spacing Line 2: 48 electrodes, 2 meter spacing Line 3: 48 electrodes, 2 meter spacing Line 4: 24 electrodes, 2 meter spacing Line 5: 36 electrodes, 2 meter spacing On Line 1, the roll-along method was used to extend the line to its full extent. In this method, 48 electrodes are picked up and [...]
Line 1: 180 electrodes, 5 meter spacing
Line 2: 48 electrodes, 2 meter spacing
Line 3: 48 electrodes, 2 meter spacing
Line 4: 24 electrodes, 2 meter spacing
Line 5: 36 electrodes, 2 meter spacing
On Line 1, the roll-along method was used to extend the line to its full extent. In this method, 48 electrodes are picked up and moved to the end of the line. Then, new data is collected in this configuration. Data were collected on each line using three array types: Reciprocal Schlumberger, Dipole-Dipole, and Reverse Dipole-Dipole (additionally, a Wenner-Schlumberger array was collected along Line 2 to facilitate the interpretation of the GEM-2 data). The dataset contain data from the Reciprocal Schlumberger arrays for each line as well as the Wenner-Schlumberger for line 2. Following data collection, the data were downloaded from the IRIS Pro instrument and stored digitally for processing