Charged body potential monitoring of an electrolyte plume emanating from a dripping source.
Hole-surface charged body potential (CBP) measurements were taken over a 173-day period during a drip-injection, tracer experiment in partially saturated, fractured basalt. A continuous, enhanced conductivity, potassium chloride (KCl) solution was dripped into the fractured basalt and energized directly through a current electrode placed in the conductive solution. The constant concentration, KCl solution was introduced above a perched water table at an average rate of 10.07 L/day under a constant hydraulic head for 76 days. The KCl drip period was followed by a 34-day tap water drip period and a 62-day drainage period. Hole-surface CBP measurements were taken over time to delineate the evolution of the asymmetrical, vadose zone, plume. A 15 by 15 grid of land surface based, porous pot electrodes (copper sulfate), located symmetrically about the centrally located injection borehole, was used for the hole-surface CBP experiment. Ratios of electrical potentials measured at the land surface over time were contoured and profiled to delineate the evolution of the electrolyte plume.
Department of Geological Sciences, University of Idaho, Moscow, Idaho 83844-3022, USA. nimm9536@uidaho.edu
Robin E
RE
Nimmer
James L
JL
Osiensky
D004566:Electrodes; D004573:Electrolytes / Q000032:analysis*; D004784:Environmental Monitoring; D012987:Soil; D014872:Water Movements; D014881:Water Supply
D004573:Electrolytes; D012987:Soil