Development of Digital AC Resistivity Meter for Groundwater Survey

Talapessy, Ronaldo; Ikegami, Tomoaki; Yoshida, Hiroaki

doi:10.1190/segj2018-001.1

Cited by 1 publication

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it may not be possible for detecting deep ground flow or flow in saline soil, because the apparent resistivity and its fluctuation may become too small to detect. A homemade digital AC resistivity meter with a 32-electrode scanner and a variable frequency generator [18] is under modification to obtain a 2D pseudo cross-section of the fluctuation level, as well as conventional resistivity in the field.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Measurement of Apparent Electrical Impedance of Soil with Water Flow Inside

Talapessy

Ikegami

Yoshida³

2020

Water

Self Cite

View full text Add to dashboard Cite

Understanding the flow of groundwater is very important, not only for water management but also for the prevention and mitigation of natural disasters. The electrical resistivity method has been established as an effective groundwater exploration method in geological surveys. The purpose of this study is to develop an accurate investigation method for groundwater flow using soil impedance fluctuations. As a preliminary experiment, the apparent soil impedance was measured by applying a low-frequency current through a soil column with water flow inside. The apparent impedance showed fluctuations due to water flow at frequencies above 20 Hz, and the fluctuation range increased with the flow rate of water. It has been proposed that groundwater flow can be detected by measuring impedance fluctuations, and it is considered that this method can be applied to groundwater surveys and embankment and reservoir leak surveys.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Additionally, a new digital AC resistivity meter has been designed to measure resistivity at different frequencies. Resistivity is obtained from the difference between the peak and valley values of the square waveform [18].…”

Section: Introductionmentioning

confidence: 99%