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This paper presents a study of the properties of sounding curves equivalent to the different electrode arrays by means of simulations for numerical modeling. Following this, the authors proposed a calculation for the synthetical apparent resistivity values in effort to gain higher-resolution sounding curves in electric sounding measurement. | VNU Journal of Science: Mathematics – Physics, Vol. 34, No. 2 (2018) 27-31 Studying the Properties of Sounding Curve in Electric Sounding Measurement Ta Quynh Hoa*, Le Viet Du Khuong Faculty of Physics, VNU University of Science, 334 Nguyen Trai, Hanoi, Vietnam Received 17 April 2018 Revised 12 June 2018; Accepted 12 June 2018 Abstract: This paper presents a study of the properties of sounding curves equivalent to the different electrode arrays by means of simulations for numerical modeling. Following this, the authors proposed a calculation for the synthetical apparent resistivity values in effort to gain higher-resolution sounding curves in electric sounding measurement. Keywords: Electric sounding, resistivity surveys, apparent resistivity, focusing array. 1. Introduction For a long time the Petrovski apparent resistivity P has been usually calculated and applied to the Schlumberger arrays with the distance between the electrodes is not equal. In this paper, this Petrovski apparent resistivity P is applied to calculate with the distance between the electrodes is equal by synthesizing the possible apparent resistivity values. In this study, present a method to calculate extension Petrovski apparent resistivity P . Following this, the average values of the apparent resistivity values with Wenner arrays and the apparent resistivity values with dipole-pole arrays (also known as apparent resistivity values of halfSchlumberger arrays) would be instead of the apparent resistivity values with four symmetric electrodes S , in which the distance from the one pole to the other poles is equal, so the signal strength is higher accuracy. _ Corresponding author. Tel.: 84-982727289. Email: hoatq@vnu.edu.vn https//doi.org/ 10.25073/2588-1124/vnumap.4267 27 28 T.Q. Hoa, L.V.D. Khuong / VNU Journal of Science: Mathematics – Physics, Vol. 34, No. 2 (2018) 27-31 2. Theory In1932, Petrovski gave a variant of sounding curve (namedPetrovski curve) which can .
