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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Journal of Science and Science Education (JoSSEd)
Bakti Sukrisna
University of Mataram
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Neuroscience Physics

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Fresh Water Exploration in Housing Estate with Schlumberger Electrodes Geoelectric Methods Muhammad Zuhdi; Syamsuddin Syamsuddin; Bakti Sukrisna; Agus Wachid Habiburrohman
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3307.033 KB) | DOI: 10.29303/jossed.v3i1.1453

Abstract

Geoelectricity is one of geophysical methods performed by injecting electric current into the earths. This research objected to map aquifers using geoelectric with Schlumberger electrode configuration consisting of 4 sounding points. The results are then processed with IP2WIN software which yields a real resistivity map as a function of depth. The correlation of sounding points produces three-dimensional real resistivity maps. The results of this study located at a housing estate, Mataram, West Nusa Tenggara, consists of 4 sounding points show that the aquifer is have huge amount of fresh water The aquifer layer in this area is a free aquifer. At point PA1 the depth of the aquifer starts from a depth of 81.4 – 125 meters; PA2 point at a depth of 80 – 124 meters; PA3 point at a depth of 91.8 – 118 meters; and Point PA4 at a depth of 47.4 – 113 meters
Determination and Mapping of the Causes of High Risk of Earthquake Hazards Using Geoelectrical Data in Bengkaung, Batu Layar, West Lombok Indonesia Hiden Hiden; Suhayat Minardi; Syamsuddin Yasin; Bakti Sukrisna; Teguh Ardianto
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 4 (2022): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i4.2206

Abstract

The Bengkaung area, Batulayar District, West Lombok is suspected to be very vulnerable to the risk of earthquake hazards. However, in this area no scientific research, either geological or geophysical, has ever been carried out regarding this hazard. How are the physical characteristics of the lithology and structure in the area to the risk of earthquake disaster? The purpose of this study was to determine the physical characteristics of the lithology and subsurface structures that were validated by the level of damage. The method used is the geoelectric method and local building damage data. The results of the 2D geoelectric anomaly modeling show the characteristics of the subsurface lithological layers in the form of sand, sandstone, clay, andesite lava faults, fresh andesite lava, and granite. The fault was detected in the center of the study area in a north-south direction. Earthquake hazard analysis shows that the cause of the high risk of earthquake hazard in Bengkaung Village is the presence of faults and cohesive lithology. The highest potential risk is in the southern part of Bengkaung Village. The southern area of ​​Bengkaung Village is dominated by clay that has cohesive properties, especially on the surface. The western and northern parts of Bengkaung Village have medium and low vulnerability to earthquake hazards. The last two areas are dominated by non-cohesive soils in the form of sandy soils and lapilli pumice
Fresh Water Exploration in Gunung Tunak, Lombok Island, Using Wenner Electrodes Configuration Muhammad Zuhdi; Syamsuddin Syamsuddin; Bakti Sukrisna; Teguh Ardianto; Agus Wahid Habiburrohman
Journal of Science and Science Education Vol. 4 No. 1 (2023): April
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jossed.v4i1.2075

Abstract

Geoelectric is the most popular geophysical method for groundwater exploration. This method is based on measuring the electric current injected into the earth and measuring the potential generated at the surface. This research was carried out at Mount Tunak, on the island of Lombok, using the Wenner electrode configuration. The data is then processed using the Res2div software. The survey was conducted on two lines and obtained two parameters, namely the injection electric current measured at the current electrode and the potential generated at the surface measured through the potential electrode. The measurement results show the rock resistivity values between 0.053 to 194 Ohm-meters. The resistivity of the aquifer rock has a value of 1.67 to 4.25 Ohm-meter, which is a sandy claystone with an aquifer containing fresh water at the depth of about 20 meters below the surface. There is a presence of salty water below the fresh water with resistivity between 0.102-0.657 Ohm-m.
Co-Authors Agus Wachid Habiburrohman Agus Wahid Habiburrohman Hiden Hiden Muhammad Zuhdi Muhammad Zuhdi Suhayat Minardi Syamsuddin Syamsuddin Teguh Ardianto Teguh Ardianto, Teguh