A Modified Wenner Array for Efficient Use of Eight-Channel Resistivity Meters

Cubbage, Brian; Noonan, Gillian; Rucker, Dale F.

doi:10.1007/s00024-017-1535-9

Cited by 20 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They depict high resistivity zone (> 900 Ω-m) at a depth of 0 to 4 m and low resistivity (< 900 Ω-m) at a depth greater than 4 m. The tomograms produced using the conventional approach for the models with one offline electrode nearly match the true model except for a few instances (Figure 7e-g) that shows a very slight variation of anomalies. This close match of the tomograms is a consequence of the high signal-to-noise ratio of the array (Cubbage et al, 2017;Thabit & Khalid, 2016), whereas, the slight variation is likely due to the increase in offline electrode distance. However, the geometries of the true model are well resolved in all the tomograms obtained by using the new approach as shown in Figure 7b´-g´.…”

Section: Wenner Array With One Electrode Offline (Wa-1eo)mentioning

confidence: 94%

Solution of Collinearity Problem in Two-Dimensional Electrical Resistivity Tomography using Wenner Array

Mohammed¹,

Muztaza²,

Saad³

2021

JST

View full text Add to dashboard Cite

Two-dimensional electrical resistivity tomography (2-D ERT) is one of the most common geophysical tools employed to satisfy the ever-growing need for obtaining subsurface information. Most of the conventional electrode arrays used for 2-D ERT survey are built with the theoretical assumption that the survey lines are straight to guarantee four collinear electrodes at every point of measurement. However, due to surface constraint associated with most survey areas, it is rarely possible to conduct a two-dimensional resistivity survey on a straight line. Therefore, 2-D ERT survey conducted on a surface constraint field requires shifting one or more electrodes off the survey line, which contrasts with the underlying assumption. Consequently, the result might be prone to false anomalies. Thus, this study aimed to device a new approach that could mitigate the false anomalies posed by non-collinearity of electrodes in 2-D ERT result. In view of this, ABEM Terrameter SAS4000 using Wenner array configuration was adopted for the survey. The data was acquired with all electrodes inline and one or more electrodes offline at stepwise distances, respectively. Based on the result obtained, the new approach mitigates the offline electrodes effect, as the inverse resistivity tomograms resolves the geometries of the true model reasonably well. More so, it has high R-value >90% which is an indication of proximity to the true model. Hence, it is concluded that the new approach is effective in mitigating offline electrode effect on a 2-D ERT result.

show abstract

Section: Wenner Array With One Electrode Offline (Wa-1eo)mentioning

confidence: 94%

Solution of Collinearity Problem in Two-Dimensional Electrical Resistivity Tomography using Wenner Array

Mohammed¹,

Muztaza²,

Saad³

2021

JST

View full text Add to dashboard Cite

show abstract

“…ERT0 on the east flood plain was 228‐m long and used 77 stainless steel electrodes separated by 3‐m intervals, whereas ERT1–3 on the west flood plain were each 249‐m long and used 84 stainless steel electrodes separated by 3‐m intervals. The ERT data were measured with an Advanced Geosciences, Incorporated SuperSting R8 resistivity meter with accompanying 56‐electrode and 28‐electrode switch boxes using the standard Wenner electrode array configuration (Zhody et al., 1974) augmented by gradient array measurements (Cubbage et al., 2017; Rucker et al., 2021). The resistance measurements acquired during each individual ERT acquisition were filtered to remove anomalous noisy measurements (e.g., negative resistance values or values with large associated errors greater than 3% for repeated measurements), and subsequently inverse modeled in the RES2DINVx64 v4.06.23 software (Loke et al., 2013).…”

Section: Methodsmentioning

confidence: 99%

Geoelectric Characterization of Hyporheic Exchange Flow in the Bedrock‐Lined Streambed of East Fork Poplar Creek, Oak Ridge, Tennessee

Ikard

Carroll

Rucker

et al. 2023

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…Aside from the controller, there is also research into development of multi-channel systems as discussed by Loke et al [12]. An example of this is a more efficient method of using an 8-channel Wenner array by Cubbage et al [13]. In terms of data storage and processing, Automated Data Processing (ADP) has been used for soil data, according to the United States Department of Agriculture Soil Survey Manual [14].…”

Section: Other Research Into Development Of Resistivity Metersmentioning

confidence: 99%

Development of a Low-Cost Resistivity Meter for Local Groundwater Survey

Monje,

Guico,

Oppus

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The researchers developed a low-cost resistivity meter with a built-in data file storage system using locally available parts. This effort was done in partnership with the National Water Resources Board and the Department of Science and Technology under the Water for Tourism project for water quality monitoring in tourist areas in the Philippines such as Boracay and Caticlan. The resistivity meter system consists of a power supply module, a sensor module, and an equipment module, built using locally available materials and equipment, emulating the commercially available PASI model 16 GL-N. Due to pandemic restrictions, the developed prototype could only be tested on one soil type area. Using a Schlumberger array configuration, the results are comparably similar to the benchmark test results using the PASI. Further work will be performed on future versions of this prototype such as the possibility of multi-electrode set-ups and some user design improvements, as recommended by partner organizations.

show abstract

A Modified Wenner Array for Efficient Use of Eight-Channel Resistivity Meters

Cited by 20 publications

References 27 publications

Solution of Collinearity Problem in Two-Dimensional Electrical Resistivity Tomography using Wenner Array

Solution of Collinearity Problem in Two-Dimensional Electrical Resistivity Tomography using Wenner Array

Geoelectric Characterization of Hyporheic Exchange Flow in the Bedrock‐Lined Streambed of East Fork Poplar Creek, Oak Ridge, Tennessee

Development of a Low-Cost Resistivity Meter for Local Groundwater Survey

Contact Info

Product

Resources

About