Version 1
: Received: 21 May 2024 / Approved: 23 May 2024 / Online: 23 May 2024 (12:08:33 CEST)
How to cite:
Wolf, L.; Flores Orozco, A. Design, Development and Application of a Modular Electromagnetic Induction (EMI) Sensor for Near-Surface Geophysical Surveys. Preprints2024, 2024051548. https://doi.org/10.20944/preprints202405.1548.v1
Wolf, L.; Flores Orozco, A. Design, Development and Application of a Modular Electromagnetic Induction (EMI) Sensor for Near-Surface Geophysical Surveys. Preprints 2024, 2024051548. https://doi.org/10.20944/preprints202405.1548.v1
Wolf, L.; Flores Orozco, A. Design, Development and Application of a Modular Electromagnetic Induction (EMI) Sensor for Near-Surface Geophysical Surveys. Preprints2024, 2024051548. https://doi.org/10.20944/preprints202405.1548.v1
APA Style
Wolf, L., & Flores Orozco, A. (2024). Design, Development and Application of a Modular Electromagnetic Induction (EMI) Sensor for Near-Surface Geophysical Surveys. Preprints. https://doi.org/10.20944/preprints202405.1548.v1
Chicago/Turabian Style
Wolf, L. and Adrian Flores Orozco. 2024 "Design, Development and Application of a Modular Electromagnetic Induction (EMI) Sensor for Near-Surface Geophysical Surveys" Preprints. https://doi.org/10.20944/preprints202405.1548.v1
Abstract
Low-frequency electromagnetic induction (EMI) is a non-invasive geophysical method that is based on the induction of electromagnetic (EM) waves into the subsurface to quantify changes in electrical conductivity. In this study we present an open (design details and software are accessible) and modular system for the collection of EMI data. The instrument proposed allows to adjust the separations between the transmitter and up to four receiving antennas as well as the acquisition frequency (in the range between 3 and 50 kHz) to permit measurements with variable depth of investigation. The sensor provides access to raw data and the software described in this study allows control of the signal processing chain. The design specifications permit apparent conductivity measurements in the range of between 1 mS/m and 1000 mS/m, with a resolution of 1.0 mS/m and with a sampling rate of up to 10 samples per second. The sensor allows for a synchronous acquisition of a time stamp and a location stamp for each data sample. The sensor has a mass of less than 5 kg, is portable and suitable for 1-person operation, provides 4 hours of operation time on one battery charge, and provides sufficient rigidity for practical field operations.
Environmental and Earth Sciences, Geophysics and Geology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
