An Inverse Slope Method of Determining Absolute Resistivity

Narayan, P. V. Sanker; Ramanujachary, K. R.

doi:10.1190/1.1439906

Cited by 19 publications

(5 citation statements)

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“…This method is widely practiced for the estimation of various parameter layers in 1D resistivity surveys (Narayan and Ramanujachary, 1967). Using the ISM, the field Schlumberger data are plotted on a simple linear graph paper for generating of a straight line segment by joining various points.…”

Section: Inverse Slope Methods (Ism)mentioning

confidence: 99%

Evaluation of the leakage origin in Abu Baara earthen dam using electrical resistivity tomography, northwestern Syria

Al-Fares

Asfahani

2018

GeofInt

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Se propone un enfoque geofísico integrado para identificar las posibles zonas de fuga dentro de la roca madre de la subestructura cercana al cuerpo de la presa. Este enfoque incluye investigación geofísica basadas en la tomografía de resistividad eléctrica (ERT, por sus siglas en inglés) y datos tradicionales de sondeo VES. La obtención de datos se llevó a cabo en la presa de tierra Abu Baara, ubicada en los márgenes del sur de la llanura de Al-Ghab al noroeste de Siria; el embalse corriente abajo, y la cresta de la presa. Los resultados adquiridos se interpretaron mediante el uso de diferentes técnicas, en particular la de Pichgin y Habibullaev. En los alrededores de la presa se distinguieron tres bloques principales que distinguió las rocas subestructurales. Los depósitos aluviales se superponen a una roca de piedra caliza y un lecho rocoso con dolomita con valores de resistencia que oscilan entre 300 y 1200 m. Se identificaron varias características anómalas estructurales dentro del lecho rocoso de carbonato duro. Estas características están relacionadas de forma mínima con elementos tectónicos como fallas, fracturas o cavidades kársticas. El segundo bloque central parece estar relacionado con una estructura con fallas o hundimientos que coinciden con el valle principal. Este valle se encuentra completamente lleno de depósitos aluviales de más de 50 m de espesor. Por lo tanto, son consideradas las principales causas de los procesos de fuga de la presa. El enfoque geofísico integrado presentado y propuesto en este documento podría aplicarse fácilmente en otras represas similares que sufren problemas de fugas. Palabras clave: estudio ERT, técnica de Pichgin y Habibullaev, filtración, Abu Baara Earthdam, Siria.

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Section: Inverse Slope Methods (Ism)mentioning

confidence: 99%

Evaluation of the leakage origin in Abu Baara earthen dam using electrical resistivity tomography, northwestern Syria

Al-Fares

Asfahani

2018

GeofInt

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“…Wenner method (Wenner 1969) It is based on equal distance spacing 4 probe methods which is carried out by inverse slope method suggested by Narayan and Ramanujachary (1967). The objective of VES is to record the changes in resistivity with depth and to correlate it with the available geological information to infer the depths and resistivity of the layers present.…”

Section: Methodology Exploration Techniquesmentioning

confidence: 99%

“…In the meantime, Narayan and Ramanujachary (1967) showed that it is possible to solve the field equation directly to get resistivity and thicknesses of the subsurface layers from the field data by inverse slope method (Narayan and Ramanujachary 1967). The inverse slope vertical electrical resistivity (VES) method as suggested by these two authors works very well in engineering geology and also in groundwater exploration for 2-5 layered.…”

Section: Methodology Exploration Techniquesmentioning

confidence: 99%

Comparative study of Wenner and Schlumberger electrical resistivity method for groundwater investigation: a case study from Dhule district (M.S.), India

et al. 2017

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The area chosen for the present study is Dhule district, which belongs to the drought prone area of Maharashtra State, India. Dhule district suffers from water problem, and therefore, there is no extra water available to supply for the agricultural and industrial growth. To understand the lithological characters in terms of its hydrogeological conditions, it is necessary to understand the geology of the area. It is now established fact that the geophysical method gives a better information of subsurface geology. Geophysical electrical surveys with four electrodes configuration, i.e., Wenner and Schlumberger method, were carried out at the same selected sites to observe the similarity and compared both the applications in terms of its use and handling in the field. A total 54 VES soundings were carried out spread over the Dhule district and representing different lithological units. The VES curves are drawn using inverse slope method for Wenner configuration, IPI2 win Software, and curve matching techniques were used for Schlumberger configuration. Regionwise lithologs are prepared based on the obtained resistivity and thickness for Wenner method. Regionwise curves were prepared based on resistivity layers for Schlumberger method. Comparing the two methods, it is observed that Wenner and Schlumberger methods have merits or demerits. Considering merits and demerits from the field point of view, it is suggested that Wenner inverse slope method is more handy for calculation and interpretation, but requires lateral length which is a constrain. Similarly, Schlumberger method is easy in application but unwieldy for their interpretation. The work amply proves the applicability of geophysical techniques in the water resource evaluation procedure. This technique is found to be suitable for the areas with similar geological setup elsewhere.

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“…By this means, the resistivity and depth to the third layer may be determined. According to [4] the thickness and resistivities of the second, third and fourth layers determined from the ρ 2 ∕ ρ 1 , ρ 3 ∕ρ 1 , ρ 4 ∕ ρ 1 and h 2 ∕ h 1 , h 3 ∕ h 1 and h 4 /h 1 ratios were given on the type curves. In the present study, the analytical method was carried out using a computer program RESIST 87 developed by [5].…”

Section: Materials and Methodologymentioning

confidence: 99%

Electrical Resistivity Data Interpretation for Groundwater Detection in Tittagudi Taluk of Cuddalore District, Tamil Nadu, India

Placide¹

2015

IJRET

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The present study aims to detect the groundwater potential in Tittagudi Taluk of Cuddalore District, Tamil Nadu, India using electrical measurement. Electric resistivity data interpretation was carried out using Schlumberger configuration with electrode spacing (AB/2) of 100 m distance. The VES was calculated by multiplying the resistance by constant obtained from the Schlumberger formula. The resistivity curves were analysed with curve matching techniques along with the help of computer programme. The sub-surface lithology was evaluated and correlated with the available borehole data. The results of quantitative interpretation of geoelectrical data indicated that the layer system having minimum of two layers to a maximum of eight layers in the area. The low and high resistivities obtained are ranging from 0.5 to 27755 ohm/m respectively. Majority of resistivity curves are falling in 'A' type. The contact zone of sedimentary and crystalline rock formations are clearly delineated on Northeast to Southwest directions along Sirumangalam, Agaram and Sirumalai habitations. The prominent low resistivity anomaly observed in and around Adari area (VES. 03), this have been encountered in all the iso-resistivity contour maps, indicating that, a trend of structural elements like a weaker zone or lineament or fracture occurred in NE direction of the study area which may be a favorable zone for targeting groundwater.

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An Inverse Slope Method of Determining Absolute Resistivity

Cited by 19 publications

References 0 publications

Evaluation of the leakage origin in Abu Baara earthen dam using electrical resistivity tomography, northwestern Syria

Evaluation of the leakage origin in Abu Baara earthen dam using electrical resistivity tomography, northwestern Syria

Comparative study of Wenner and Schlumberger electrical resistivity method for groundwater investigation: a case study from Dhule district (M.S.), India

Electrical Resistivity Data Interpretation for Groundwater Detection in Tittagudi Taluk of Cuddalore District, Tamil Nadu, India

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