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All Journal Journal of Degraded and Mining Lands Management Jurnal Pengabdian Magister Pendidikan IPA
Batlolona, Yohanis Toni
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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Vertical electrical sounding method and Dar Zarrouk analysis to identify the distribution of seawater intrusion in Pelauw Village, Maluku Bahri, Samsul; Tualepe, Daramahu; Batlolona, Yohanis Toni; Ramadhan, Aditya; Parnadi, Wahyudi Widyatmoko
Journal of Degraded and Mining Lands Management Vol. 11 No. 4 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.114.6089

Abstract

Groundwater is one of the essential resources that support human life. Excessive exploitation activities can cause groundwater problems such as seawater intrusion, especially in coastal areas. Groundwater salination must be a concern and measured to determine the condition and level of distribution. One of the non-invasive, inexpensive, and efficient methods to see seawater intrusion phenomena is the vertical electrical sounding (VES) technique of electrical resistivity method. This research aimed to analyze the distribution of seawater intrusion in Pelauw Village, Maluku, Indonesia, using the VES and Dar-Zarrouk parameters S and T. The S and T are longitudinal conductance and transversal resistance, respectively. This study collected 16 VES stations spread across residential areas near the coast of Pelauw Village. Groundwater affected by seawater intrusion in the study area has S>1.00 mho and T<1,000 ohm m2. Three VES stations are suspected to have experienced seawater intrusion, namely V7, V8 and V12. These three stations are located near the shoreline and densely populated areas. Based on the 2D cross-section, the spread of seawater intrusion toward the land is about 200 meters. This seawater intrusion event is thought to have occurred due to groundwater exploitation by communities around the coast and active tectonic activity. The VES method and Dar Zarrouk Analysis proved compelling enough to delineate the spread of seawater intrusion, so based on these results, it can be a reference for mitigating groundwater pollution.
Pelatihan Metode Geolistrik Untuk Mendukung Pembelajaran Teknik Eksplorasi Bawah Permukaan Kepada Siswa Kejuruan Geologi Pertambangan Jaya, Gede Wiratma; Zulfiah; Ramadhan, Aditya; Bahri, Samsul; Rusmin, Yusril Jibran Rusady; Patty, Kayra Faith Love; Rivenia, Felisia Miselva; Melsano F. Nurue; Batlolona, Yohanis Toni; Sukri, Muh. Riswan Anas
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 4 (2025): Oktober-Desember 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i4.12947

Abstract

The province of Maluku has a rich potential of natural resources, particulary for metallic mineral such as gold and copper. To map this potential, human resources with competence in exploration engineering are needed. In 2017, SMK PGRI Ambon opened a new major in geological mining to prepare human resource who are ready to contribute to managing the mineral resources in Maluku Province. However, due to the lack of competence in subsurface exploration techniques, the Community Service team has partnered with SMK PGRI Ambon to support the competence of geological mining students in the field of subsurface exploration technique. This community service program uses the Service Learning method, which consists of several stages: 1) coordination, 2) activity preparation, 3) theoretical training on geoelectric method, 4) practical sessions on the geoelectrical method, and 5) evaluation of training results. The community service program was attended by 31 geological mining students from grades X to XII. The theoretical training and practical sessions on the geoelectric method were conducted on August 19-20, 2025. For the training session, the community service team provided theoretical material on the geoelectric method. For the practical session, students were taught how to use geoelectric equipment. Subsequently, they were also given material on processing geoelectric data and interpreting subsurface layers. The evaluation results indicate that the theoretical training on the geoelectric method successfully improved knowledge competence, with the average knowledge score increasing from 43.23 to 62.58. This community service activity has directly contributed to assisting SMK PGRI Ambon in providing knowledge and skills to its geological mining students.
Co-Authors Aditya Ramadhan Gede Wiratma Jaya, Gede Wiratma Melsano F. Nurue Parnadi, Wahyudi Widyatmoko Patty, Kayra Faith Love Rivenia, Felisia Miselva Rusmin, Yusril Jibran Rusady Samsul Bahri Sukri, Muh. Riswan Anas Tualepe, Daramahu Veithzal Rivai Zainal Zulfiah