Application of electromagnetic induction to develop a precision irrigation framework to facilitate smallholder dry season farming in the Nasia-Kparigu area of northern Ghana

Fontaine, J. M.; Percy, Alexander; Oware, E. K.; Bosompemaa, Patience; Gbedzi, V. D.; Lane, John W.

doi:10.1190/segam2018-2997867.1

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…These near-surface geophysical techniques provide non-invasive and cost-effective approaches for imaging subsurface structures and estimating earth properties, compared to direct methods such as drilling or excavation (Ward and Hohmann, 1988). Additional near-surface EM application examples include using resistivity data combined with soil sampling and satellite imagery to develop frameworks for farm irrigation management (Fontaine et al, 2018), applying EM methods for environmental remediation to assess the location and areal extent of pollutants including landfills and radioactive waste disposal sites (White et al, 2016), and developing lightweight drone-based EM systems for detecting and classifying unexploded ordinance (Shubitidze et al, 2021), which opens up opportunities for drone-based EM surveying in environmental and agricultural applications.…”

Section: Introductionmentioning

confidence: 99%

Developing a low-cost frequency-domain electromagnetic induction instrument

Wilson

Conrad

Anderson

et al. 2022

Geosci. Instrum. Method. Data Syst.

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Abstract. Recent advancements and the widespread availability of low-cost microcontrollers and electronic components have created new opportunities for developing and using low-cost, open-source instrumentation for near-surface geophysical investigations. Geophysical methods that do not require ground contact, such as frequency-domain electromagnetics, allow one or two users to quickly acquire significant amounts of ground resistivity data in a cost-effective manner. The Colorado School of Mines electromagnetic system (CSM-EM) is a proof-of-concept instrument capable of sensing conductive objects in near-surface environments, and is similar in concept to commercial-grade equipment while costing under USD 400 to build. We tested the functionality of the CSM-EM system in a controlled laboratory setting during the design phase and validated it over a conductive target in an outdoor environment. The transmitter antenna can generate a current of over 2.5 A, and emit signals that are detectable by a receiver antenna at offsets of up to 25 m. The system requires minor refitting to change the functioning frequency, and has been operationally validated at 0.4 and 1.6 kHz. The receiver signal can be measured by off-the-shelf digital multimeters. Future directions will focus on improving the electronic and mechanical stability of the CSM-EM with the goal of using acquired data to make quantitative measurements of subsurface resistivity.

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