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.
Nimmer
Robin E
RE
Department of Geological Sciences, University of Idaho, Moscow, Idaho 83844-3022, USA. nimm9536@uidaho.edu
Osiensky
James L
JL
D004566:Electrodes; D004573:Electrolytes / Q000032:analysis*; D004784:Environmental Monitoring; D012987:Soil; D014872:Water Movements; D014881:Water Supply
D004573:Electrolytes; D012987:Soil