Analysis of Shallow Subsurface Structure at Geothermal Area of Ie Jue Using Resistivity Method

Idris, Syafrizal; Syukri, Muhammad; Surbakti, Muhammad Syukri; Marwan, Marwan; Muchlis,; Rusydy, Ibnu; Aflah, Nurul

doi:10.24815/jn.v18i1.9676

Cited by 2 publications

(2 citation statements)

References 2 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By direct observation, the measurement line from northwest to southeast is in the Lam Teuba Volcanic Rock formation consisting of tuffaceous sand and volcanic breccias. The influence of topography or the presence of local faults [17] makes the conditions subsurface the volcanic landscape area very complex and complicated. The results of the interpretation of the resistivity model can be seen in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

Identification of the Aquifer Layer using the Geoelectric Method in Teupin Batee Village, Aceh Besar

Idris¹,

Darisma

Pramana

et al. 2022

Bulletin of Comp. Sci. Electr. Eng.

Self Cite

View full text Add to dashboard Cite

The need for clean water around the world is related to the increasing population, especially in Teupin Batee Village, Aceh Besar District. In addition to surface water, groundwater is one of the potentials that can be utilized by the community, particularly for household needs. The purpose of this study is to identify the aquifer layer using the geoelectric method. One of the geophysical methods that can be used to map groundwater potential is the geoelectrical method based on the resistivity value of subsurface rocks. This study uses the Wenner-Schlumberger array because it can map subsurface structures both vertically and horizontally. From the results of the study, it was found that there are four different layers in this research area including, the top soil layer, hard rock, tuffaceous sand and sand layer as aquifer layer. The top soil layer is mixed with tuff, sand and volcanic breccia to a depth of 8 m with a resistivity value of 5-25 ?m. The Hard rock layer is at a depth of 8 m – 30 m with a resistivity value of 45-220 ?m. The tuffaceous sand layer has a resistivity value ranging from 25-55 ?m. While the sand layer or aquifer is at a depth of 10 m – 60 m with a resistivity value of <10 ?m which is separated by a layer of tuffaceous sand between the two aquifer layers.

show abstract

Section: Resultsmentioning

confidence: 99%

Identification of the Aquifer Layer using the Geoelectric Method in Teupin Batee Village, Aceh Besar

Idris¹,

Darisma

Pramana

et al. 2022

Bulletin of Comp. Sci. Electr. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Meanwhile, the distance between profiles was also made 100 m with a trajectory length of 700 m to cover the entire area of manifestation Ie Jue. The electrical resistivity was measured in the same location where the VLF-EM method was carried out with the target depth ranging from 60 -80 m under the surface using the Wenner-Schlumberger configuration sensitive to the subsurface lateral change [29]. Survey design of VLF-EM and electrical resistivity measurement on manifestation Ie Jue is shown in Figure 2a, including several documentations of hot spring outcrop -by Figure 2b and measurement of on-ground VLF-EM observation using GEM equipment -Figure 2c.…”

Section: Survey Designmentioning

confidence: 99%

Geoelectrical model of geothermal spring in Ie Jue Seulawah deriving from 2D VLF-EM and DC resistivity methods

et al. 2023

View full text Add to dashboard Cite

Seulawah Agam is one of the volcanic areas in Aceh province, Indonesia, which planned for a powerplant constriction with an energy capacity expected to be approximately 230 MWe. This volcano has seven manifestations in the form of craters, hot water, and heated soil. The hydrothermal system in this volcano is controlled by a fault system which acts as a medium for the entry and exit of fluids. Therefore, understanding the local geology is required for geothermal power plant development, especially for the determination area for injection and production wells. In this research, we use the Very Low-Frequency Electromagnetic (VLF-EM) methods combined with electrical resistivity tomography data on the Ie Jue manifestation area to determine the shallow structure related to the manifestation. The VLF was made for 4 profiles with 700 m length for each VLF-EM profile and 300 m for electrical resistivity lines. We utilized the Karous Hjelt filter for qualitative interpretation, while Occam's algorithm was applied for 2D inversion of data for quantitative analysis of VLF-EM data. Based on the current density model, several vertical conductive anomalies can be well demonstrated at a distance of 300-400 m from the four VLF profiles. The conductive anomaly can also be seen in the resistivity data from the electrical resistivity. The results of the Occam model show that the depth of faults and fractures is seen at 30 m depth with low resistivity (below 100 Ωm). This anomaly is generally associated with outcrops in the field, such as fumarole and warm ground on the east side of the manifestation area. In addition, the 2D inversion model of VLF also shows the contrast of several fracture zones as a place for fluid to enter and exit the Seulawah volcano. Therefore, based on our result, it can be summed up that this method is effectively applied to geothermal in high terrain areas such as in Indonesia and can be used to suggest safe locations for injection wells and production of geothermal drilling.

show abstract

Analysis of Shallow Subsurface Structure at Geothermal Area of Ie Jue Using Resistivity Method

Cited by 2 publications

References 2 publications

Identification of the Aquifer Layer using the Geoelectric Method in Teupin Batee Village, Aceh Besar

Identification of the Aquifer Layer using the Geoelectric Method in Teupin Batee Village, Aceh Besar

Geoelectrical model of geothermal spring in Ie Jue Seulawah deriving from 2D VLF-EM and DC resistivity methods

Contact Info

Product

Resources

About