Geoelectrical Resistivity Method Research Articles

Application of geoelectrical resistivity method for the assessment of shallow aquifer quality in landfill areas.

In this article, a valuable approach utilizing the relationship between select physical water and soil characteristics and geoelectrical resistivity data was used to recognize and trace groundwater contamination by using the geoelectrical resistivity data of a landfill area. It can reduce uncertainty in geoelectrical resistivity interpretation. By interpreting and calibrating the resistivity model with the lithology and physical characters of water samples, it was possible to identify the unique paths of landfill leachate that occurred throughout a shallow aquifer. The water physical property analysis showed that the landfill area was contaminated by a relatively high amount of total of dissolved solids (TDSs). A scatter plot of TDS values and directly measured resistivity showed that resistivity decreased with increasing TDSs. The movement direction of the landfill leachate in the aquifer system was clearly observed in a depth slice of the resistivity distribution. The aquifer is considered to be contaminated starting from the landfill zone and extending to the northeastern part of the study area.

Identifying Andesite Rocks Sources Using Geoelectrical Resistivity in Loli, Donggala Regency, Central Sulawesi

Research has been carried out in Loli Village, Donggala Regency, Central Sulawesi using the Wenner-Schlumberger resistivity geoelectric method to determine the resource of andesite rocks. This measurement was done by determining the path points in the field using the Global Positioning System (GPS). The data collection was carried out using the geoelectrical resistivity method based on the area’s measurement plan. The data obtained was in the form of position data for each electrode, potential data ( V ), and current strength data ( I ) used to calculate the resistivity value ( r ). The results obtained from this research are andesite rock resource content, which was characterized by a high resistivity value ranging from 300–600 Wm. The resistivity value of the cover layer is low, ranging from 14–45 Wm. The latent content of andesite rocks was dominated in the southeast region on the trajectory of DRSA_01, DRSA_02, DRSA_03, DRSA_04, and DRSA_06 which had a lower topography than the northwest region. DOI: http://dx.doi.org/10.17977/um024v4i22019p045

Identification of Aquifer in the MIPA Faculty - University of Jember Using 1D Geoelectrical Resistivity Method with Schlumberger Array

Faculty of Mathematics and Natural Sciences University of Jember located in Sumbersari District with lithological conditions in the form of volcanic rocks, lithosol soils, and regosol soils that are capable of absorbing water and potentially as aquifers. In point of fact, in the campus zona of the University of Jember including in the Faculty of Mathematics and Natural Sciences, there is always a shortage of freshwater for various academic and non-academic activities. Therefore, research needs to be conducted to assess the lithology of subsurface structures in the FMIPA zone so that the depth of groundwater layers and aquifer layers can be determined. The study was conducted using the Schlumberger array geoelectric resistivity method at 5 VES points. The results obtained in the form of resistivity log curves can be seen that at the five points VES has lithology in the form of clay, gravel, sandstone, and groundwater layer. Each VES point was identified the groundwater layer and some of them were identified as aquifers. The aquifer with the greatest thickness is found at point VES 2, which is to the west of the Baitul Ilmi Mosque, so it is recommended as the location of a new well.Keywords: lithology, aquifers, geoelectric resistivity method, groundwater.

Geoelectrical Investigation the Depth of Groundwater Potential for Irrigation of Paddy Fields

Groundwater is an opportunity for the irrigation of Paddy fields. A paddy field that is planted only one crop during the rainy season is an obstacle to the lack of rice production in the city of Padang. Meeting the need for rice consumption was sent from various western Sumatra areas. If this happens, again and again, it would threaten food security. This research to determine the depth of groundwater table potential has been carried out in Koto Tangah, Padang city. This study using the geoelectric resistivity method with Schlumberger Configuration and data processing using software IP2WIN. The resistivities value of these zones varies from 1.8 Ωm to 1761 Ωm. Layers found to the depth 20 m are a sub-surface layer, clay, sandy clay, and gravel. Layers of clay identified as Groundwater because it’s small so it can withstand water. Based on the results of comparative research data measurement of the estimation of the depth of the ground water level with a geoelectric tool and the depth of the ground water with a piezometer device obtained close relationship. So, from these results a linear regression equation can be made with the form of the equation Ý = 0.793X + 0.838X + 0.3636 and has an R2 of 0.8765.

Analysis of landslide area of Tulung subdistrict, Ponorogo, Indonesia in 2017 using resistivity method

PurposeResearch has been conducted to analyze the landslide in Banaran area, Ponorogo Regency. The landslides occurred on April 1, 2017. This study was conducted to know the subsurface conditions in the Banaran area to analyze the disaster mitigation efforts. The mitigation efforts are made to reduce the risk from landslides and possible landslides.Design/methodology/approachThe method used is the geo-electric resistivity method of Wenner–Schlumberger configuration. The research was conducted in three villages namely Banaran Village, Bekirang Village and Mendak Village.FindingsThere are 12 resistivity measuring points with a track length of 410 m and a space of 10 m. The measured resistivity range is between 1.42 Ω.m and 67.500 Ω.m. The resistivity data and the local geological maps interpreted that the rocks in the Banaran area consist of clay, tuff lapilli, volcanic breccia and andesite lava. The landslide area begins at a depth of 8–35 m below the surface which is interpreted as tuff. Also, the thickness of the landslide material and the slope is = 400 which supports the occurrence of a more prominent landslide. The results of the parameter scoring of the landslide-prone areas indicated that the research area is very vulnerable to a landslide. The results of the interpretation indicate that the geo-electric resistivity method can provide a good overview for conducting landslide analysis, that is field slippage and potential material thickness occurrence landslide.Originality/valueThis article is very specific as it attempts to discover how prone Banaran are is to landslide.

Model 3D Sebaran Lindi pada Lapisan Tanah di Area TPA Batulayang Pontianak Berdasarkan Nilai Resistivitas

The Final Disposal Site (TPA) of Batulayang Pontianak, West Kalimantan, uses an open dumping system so that it produces waste water (leachate). Its area on peatlands creates problems, especially in the distribution of leachate. The purpose of this study was to create a 3D model of leachate distribution in the soil layer in the TPA area of Pontianak Batulayang, West Kalimantan, based on the distribution of resistivity values. This study using the geoelectric resistivity method by the Wenner-Schlumberger configuration. The tracks that have been used are six, having a length of 117 m each. The results showed that the soil layer contaminated by leachate spreads from a depth of 5 m to 23.6 m. This layer is interpreted as sandy clay and sand, having a resistivity value of 0.152 Ωm to 13 Ωm. The results also showed that leachate comes from the West, North, and South directions, which spread to all study areas.

EKSPLORASI AKUIFER AIR BAWAH TANAH MENGGUNAKAN METODE TAHANAN JENIS 2D DI DESA SELARU KABUPATEN KOTABARU, KALIMANTAN SELATAN

Geoelectric resistivity method is one method that can be used to characterize water-bearing rock layers (aquifers). This method is based on the existence of differences in type resistivity in the layers of rock that are flowed electrically. The use of this method is based on easy application, faster data acquisition with broad data coverage (lateral and vertical), and lower costs. Data acquisition uses two configurations or electrode arrangement, namely sclumberger and wenner-schlumberger configurations. The number of trajectories for data acquisition uses one path with a total of 28 electrodes and the spacing between the electrodes is 20 meters. The data obtained in the form of data resistivity type of each underground layer and its depth will be further analyzed using AGISSAdmin software. The results are obtained in the form of a 2-dimensional (2D) cross-sectional value of underground layers laterally and vertically. The low resistivity value will be interpreted as a layer containing ground water, which was previously corrected against the geological and hydrological data of the area. From the cross section of the type resistors, values of 20 - 317 Ωm were obtained for the wenner and wenner-schlumberger arrangements. Selaru Village consists of two rocks unit, the first rock (≤ 120 Ohm.m) in the form of Tanjung Formation rocks, with large porosity and small permeability and groundwater potential in this unit is small (0 - 40 m depth). The second rock (≥ 120 Ohm.m) is Pre Tertiary, with very little porosity and permeability, except secondary porosity in rock fractures.

Implementation of robust constraint inversion method on resistivity geoelectric data to study landslide precursors (case study : Sungai Lasi District and Gunung Talang Solok District, West Sumatra).

Landslides are natural disasters that have a major impact on the environment and surrounding communities every year. Even so, the impact of landslides can be reduced if the precursors of landslides are known through research. However, There are not much research has addressed to study this issue thoroughly. Indeed, many methods are used to study landslide precursors, one of which is to study landslide precursors based on resistivity data of rocks that form slopes or hills where landslides tend to occur. The rock resistivity data can be obtained by the Geoelectric Resistivity method, but the resistivity data that obtained through this method is apparent resistivity. The actual rock resistivity and thickness of the rock structure can be interpreted based on apparent resistivity using the Robust Inversion method. Thus, the purpose of this study is to describe the rock structure (resistivity and thickness) which has the potential as a precursor for landslides in Solok Regency, West Sumatra. The results showed that there were 10 landslide precursor points in Sungai Lasi District and 6 landslide precursor points in Gunung Talang sub-district that had the potential for landslides.

Modeling of aquifer using vertical electrical sounding data with kriging interpolation in Padang City

Aquifer is an underground layer of water. Currently, many residents of Padang do not know the exact position of the aquifer. Many drilling activities have been carried out to find ground water. But the results are not in accordance with the predetermined depth targets. This situation will be affected to the costs incurred for drilling. This study aims to model aquifers in Padang and find out their depth and thickness. One way to identify aquifers is to use geoelectrical resistivity method. In this study, researchers used a one-dimensional vertical electrical sounding (VES). The collection of geoelectrical sounding data is spread in 36 points in Padang. To modeling the aquifer layer, kriging interpolation method is used. Based on the results of processing rock resistivity models, it was found that the average aquifer depth in Padang is about 6.23 meters, with the shallow depth in 1.01 meters and the deepest in 20.02 meters. While the average thickness of aquifers is about 7.47 meters, with the thinnest thickness in 1.68 meters and the thickest in 11.74 meters. The aquifer layer was identified as unconfined aquifer.

Inversion of multiple data sets acquired by different array configuration of geoelectrical resistivity method

The geoelectrical resistivity method is one of the most commonly used geophysical methods. This method uses different electrodes configuration, electrode array, depending on the purpose and conditions of the field, each type of array has its advantages and disadvantages. Due to the development of data acquisition technology, it is common for geoelectrical instruments enable to record data arising from different electrode arrays with negligible real-time construction. However, current software’s only allows to process for each individual electrode array. Inverted models of different electrode array can be integrated to build a common earth model. However, due to the nature of the geophysical inversion is non-unique solutions, it means that there will be an infinite of models that can be suitable for a measurement in a certain noise level. This leads to the same measurement data in an area with different electrode array may produce different geoelectrical models making the dificulty for integration process. To solve this problem, we utilise the simultaneous joint inversion algorithm of data sets arising from multiple electrode arrays. The test results on synthetic data show that this combination is better than the solution of each individual electrode array. The best result is a combination of pole - dipole (PD), dipole - pole (DP) and dipole - dipole (DD).

Eksplorasi Artefak Zaman Megalitikum Berdasarkan Citra Bawah Permukaan Menggunakan Metode Geolistrik Resistivitas di Dusun Kendal Desa Kamal Kec.Arjasa Kab. Jember

Megalithic age artifacts are spreaded in the Jember region, one of them in the Kendal hamlet adjacent to the Duplang site. There are still many artifacts buried in this location that need to be explored using the geoelectric resistivity method of the Wenner configuration. Data acquisition was carried out on 3 lines with length of 40 m. Base on 2D resistivity distribution image for all three lines, it was known that the subsurface structures were dominated by clay with resistivity value of (1.54 – 89.4) Ωm. Resistivity anomaly with value (197-581) Ωm, which are suspected of being andesite stones forming the artifacts are at a depth (0.25 -3.19) m on the three lines. The presumption existence of the artifacts is reinforced by the presence of kenong rock and menhirs outcrops on line 2.

THREE-DIMENSIONAL RESISTIVITY MODEL FOR GROUND WATER EXPLORATION IN VOLCANIC ZONE OF TIDAR PLETEAU, MALANG, EAST JAVA

Geoelectrical resistivity method is popular technique for subsurface mapping of groundwater, mining exploration, and structural geology. For case study in Tidar Plateau which characterized by hard rock of volcanic breccia, lava, tuff, and conglomerate, the groundwater system occurs only by the secondary porosity (faulting, facturing, and weathering). Therefore it becomes difficult task for determine position of good well site in Tidar Plateau. Geoelectrical technique by Schlumberger configuration was choosen to investigated the ground water system in this area. Total 5 Vertical Electrical Sounding (VES) acqusition point (400 m length measurement; spacing 10 m) for data measurement with coverage area about 400 x 400 m2. For data processing was used IP2Win, Progress3, and RockWork 16. The data processing results showed high accuration with avarage Root Mean Square (RMS) error about 0.3 – 8.3 %. According to resistivity results, the study area has resistivity between 0.3– 2.5x104 . The rocks which have resistivity between 0.3 – 12.52 interpreted as sandy-clay; 12.52 – 50 interpreted as wet sandstone (aquifer); 129 – 178 interpreted as conglomerat; 700 – 1300 interpreted as tuff, sand, and dry gravel; 2600 – 2.5x104 interpreted as volcanic breccia. This geoelectrical results has succesful finding the fresh water at VES 5 after drilled at depth 100 m at wet sandstone formation. To findout distrubution of aquifer layer, a three-dimensional (3D) resistivity model was developed. The 3D resistivity model shows the aquifer layer image look the dome-like structure and image the fracture regions which becomes the pathway of groundwater system.

Detection of water leakage paths using self-potential and geoelectrical resistivity methods: A case study of Kailana Lake-Takht Sagar in the Jodhpur City, Rajasthan, India

The present paper characterizes the origin of water leakage from the Kailana Lake-Takht Sagar in the Jodhpur city, Rajasthan, India. Self-potential (SP) method was used to delineate leakage paths; whereas, electrical resistivity method was used to delineate the hydrogeological conditions and identification of fracture zones favourable for water leakage in the study area. Special consideration was focused on the lake, which supports water leakage through cracks, joints, faults and fractures present in the unlined walls or leakage through subsurface structures. The analysis of the integrated results delineates water leakage paths that act as conduits in certain locations through unconsolidated or fractured zones connected from Kailana Lake-Takht Sagar. Additionally, hydrostatic pressure due to increase in the water level of Kailana Lake-Takht Sagar and the presence of many lineaments and its interconnection through Kailana Lake-Takht Sagar, enhance the water leakage problem.

Depth estimation of the aquifer layer using the geoelectric resistivity method

At present, the distribution of water received by the ITK campus only comes from the PDAM and often experiences interference. Based on this case, a solution is needed to overcome the limitations of water by finding a layer of aquifers around campus area of ITK. The purpose of this study was to estimate the depth of aquifer and subsurface stratigraphy around ITK using the geoelectric resistivity method with schlumberger configuration. The resistivity geoelectric method is used to determine the subsurface structure based on the distribution of rock resistivity values. The results of the interpretation indicate that the subsurface statigraphy of the study area consists of top soil with resistivity 36.9 Ωm - 558 Ωm, sandy clay with resistivity 16.1 Ωm - 64.9 Ωm coal insertion with resistivity 637 Ωm clayey sand with resistivity 133 Ωm - 174 Ωm, and clay with a resistivity of 2.32 Ωm - 8.27 Ωm. The coal and clay seams are aquiklud, the sandy clay layer is aquitar, and the layer that includes aquifers is clay sand layer. The depth of the aquifer at each measurement point on average has a range from a depth of 56.5 m - 72.8 m is medium to productive aquifer

Interpretation of surface structure on artisanal and small scale gold mining areas with geoelectric resistivity method of schlumberger configuration in Sekotong, West Lombok

West Nusa Tenggara (NTB) has a very diverse mineral content both metal and non-metal minerals. Sekotong Sub District in West Lombok Regency has mineral resources such as gold, copper, and silver. Artisanal and small scale gold mining activities are carried out without calculating how much potential mining materials are available and at what point and at what depth the minerals are located, the required cost, labor and time. Similarly, cases that occur in artisanal and small scale gold mining areas also occur in the Rambut Petung area, Sekotong Sub District. Therefore, special methods are required to determine the presence of excavated materials that settle beneath the surface of the earth. The method that is often used in identifying subsurface is the geophysical method. The utilization of geophysical methods must be under the nature of the materials to be examined. The data processing results indicate that there are layers consisting of breccias, lava, tuff with lens limestone. Based on the resistivity log, the resistivity value is 44.56 ohms, 3-11 m the resistivity value is 17.33 ohms, 11-89 the resistivity value is 42.39 ohms, and the value of 89-130 is 309.81 ohms.

The Weak Soil Investigation at the Slope Zone in the Hot Spring Area, Rokan Hulu, Indonesia

The slope failure can occur due to the soil on the slope area is relatively porous and the surface water is easily to move in the soil. The zone of the weak zone of the soil should be detected early to avoid the ground mass movement on the slope area. This study is to investigate the weak zone of the soil on the slope area of the hot spring tourism location using geoelectrical resistivity and soil property analysis methods. The Wenner configuration with a total of 40 electrodes has been employed at each four resistivity survey lines. The electrode spacing was adjusted to be 2 – 5 meter in order to get relatively higher resolution of the resistivity data. Soil samples were collected at several site to measure the soil characteristics of the study area. The soil analysis results show that the study area consist of gravel, sand, clay, silt and weathered methasediment. The geoelectrical resistivity model shows the relatively low resistivity value of about 30 ohm.m at the slope zone which is indicating that the soil has higher porosity. Generally only a few locations with the weak soil zone detected in the slope of the hot spring area, however, it is not potential for the ground mass movement due to the soil is relatively thin.

Detection of the Soft Soil at the Slope Area using Geoelectrical Resistivity Method

The landslide occur commonly in the slope zone area. The landslide may cause the damage and lose the wealth. This research aimed to detect the soft soil zone of the landslide area using geolectrical resistivity method. The geoelectrical resistivity survey was conducted using Wenner configuration with a total of 40 electrodes. Interpretation of the geolectrical model was improved trhough the direct surface resistivity measurement. The geoelectrical resistivity model shows the relatively low resistivity value at the near surface. The low resistivity value indicates that the soil is not solid and it is possible the water seep to the pore of the soil. The relatively higher resistivity value indicates that the soil is relatively compact and thus, the water is relatively hard to enter the pore. The soft zone of the soil at the slope is clearly observed and possible to slide down whenever water intervene the soil condition.

Application of Geoelectrical Resistivity Methods for Mapping of Seawater Intrusion

Excessive land exploitation in Dumai has been replaced by intrusion seawater in aquifers in the coastal area. This is indicated by the increasing number of society’s wells that turn into brackish. The intrusion has a wide impact on various aspects of life, such as decreasing soil fertility, damage the buildings, and disrupting public health. The aim of this study is to find out the saturated zone of water and the interface of water with fresh water, so it is known that water zones are suitable for daily use. The study used Geoelectrical Resistivity Survey with 1D Schlumberger configuration to determine the zone of aquifer and its thickness. Based on the research that has been done, the results of the boundary of the intrusion zone in Dumai were obtained that there is an intrusion zone boundary of seawater content. This is indicated by the low resistivity value. It is less than 10 ohms, which is found at the zone of less than 1 km from the beach line.

Identification of Landslide Potential using Electrical Resistivity Tomography Method Wenner-Schlumberger Configuration in Sampiro, Bolaang Mongondow Utara, North Sulawesi

Trans-Sulawesi road was being cut off in the Sampiro village, Bolaang Mongondow Utara district, North Sulawesi caused by the soil movement. This problem gives a loss to the villagers and hampers the economy. This research was using geoelectrical resistivity method and supporting data in the form of well data and standard penetration test value. Geoelectrical resistivity measurements in Sampiro were carried out in 3 measurement trajectories, with various resistivity values. The resistivity value at 4-10 Ωm is a layer of high porosity alluvium with 10 meters of thickness and there is a potential for landslides. Resistivity value at 10.3-40 Ωm is a layer of sandstone clay and sandstone which having rainwater intrusion. Massive sandstone and claystone layers with resistivity values at 40-70 Ωm.

Application of Geoelectrical Resistivity Method for Groundwater Exploration Using Wenner-Schlumberger Configuration in Sampakang, Maros Regency, Indonesia

Indonesia is one of the tropical countries that only has two seasons, namely the dry season and the rainy season. The prolonged dry season caused the villagers in Sampakang having difficulties in obtaining clean water sources. This research conducted in Sampakang, Maros, Indonesia aims to obtain groundwater that can be used as a spring for villagers. The research was conducted using the Geoelectrical Resistivity Method Wenner Schlumberger configuration with a total trajectory of 56 m. The results of the analysis showed that the soil structure consists of shallow groundwater and the RMS error is 2.2%. Where the thickness of the aquifer layer is 9 m and was found at a depth of 2.5 m-11.5 m. Aquifer layer in the form of alluvium deposits with a resistivity value of about <10.9 Ωm-100 Ωm. There is a permeable layer in the form of limestone in a depth of 9.6 m with resistivity value at >100 Ωm.