SSHCZO -- Ground Penetrating Radar (GPR) -- Shale Hills, Missed Grouse -- (2013-2013)

Three sets of 21 GPR lines were collected (single set at each location, unlike Shale Hills experiment which had duplicate lines). The set of lines are diagramed in GPR_grid_2013.xlsx. Each group is identified by a line number given in FieldNotesWithLineNumbers. The three sets are pre-infiltration, after water infiltration, and after dye infiltration. The water infiltration pre-wet the soil to extend the range of the dye migration. All of these were collected in a single day. Duplicate radar lines provide a measure of data reproducibility and sensitivity. Processed radargrams are available in the appendix of the Pitman master’s thesis. Processing parameters are provided there. A MALA GPR with 800 Mhz shielded antenna was used. The sample interval was 0.1164 ns. The time window was 46.434 nanoseconds (400 samples per trace). A trace was collected every 1 cm along the lines triggered by the Mala survey wheel attached to the antenna. The antenna was pulled by hand, but guided by a rigid board for reproducible location. A distance measuring wheel was used to encode the horizontal position..