Aplikasi Metode Vertical Electrical Sounding untuk Pendugaan Kedalaman dan Ketebalan Lapisan Akuifer di Kota Langsa

Sabrian Tri Anda; Nanda Firmanda; Zul Fadhli; Muhammad Syukri

doi:10.29103/tj.v13i1.819

Aplikasi Metode Vertical Electrical Sounding untuk Pendugaan Kedalaman dan Ketebalan Lapisan Akuifer di Kota Langsa

Sabrian Tri Anda, Nanda Firmanda, Zul Fadhli, Muhammad Syukri

Abstract

Abstrak

Penyediaan sumber baku air bersih masih menjadi sebuah masalah utama yang dihadapi oleh pihak Perusahaan Air Minum Daerah (PDAM) Tirta Keumuneng Kota Langsa. Oleh sebab itu dilakukan sebuah studi sebagai acuan alternatif dalam penyediaan sumber baku air bersih di Kota Langsa berupa air tanah (groundwater). Studi dilakukan dengan menggunakan metode Vertical Electrical Sounding (VES) untuk menentukan potensi air tanah yang ditandai dengan keberadaan lapisan akuifer. Metode ini dilakukan dengan menginjeksi arus ke bawah permukaan bumi sehingga parameter fisis berupa nilai resistivitas dapat diketahui, untuk pendugaan awal lapisan akuifer guna pengidentifikasian potensi sumber baku air bersih berupa air tanah. Pengukuran data lapangan dilakukan di beberapa titik yang tersebar di wilayah Kota Langsa. Dari hasil pengukuran lapangan, diketahui bahwa Kota Langsa memiliki potensi keberadaan air tanah yang ditandai dengan adanya lapisan akuifer diduga berada pada kedalaman 43 – 105 m di bawah permukaan dengan rentang nilai resistivitas sebesar 31 – 45 Ωm.

Kata kunci: groundwater, akuifer, vertical electrical sounding, resistivitas

Abstract

The provision of a raw source of clean water is still a significant problem faced by the Local Water Company in Langsa City therefore, a study was carried out as an alternative in order to provide raw source of clean water in Langsa City by exploring the existence of groundwater. The study was conducted using the Vertical Electrical Sounding (VES) method to determine the groundwater potential which is indicated by the presence of aquifer layers. The method is applied by injecting the electrical currents beneath the surface to calculate the physical parameters (resistivity) as the initial stage to estimate the aquifer layers in order to identify potential sources of groundwater. Field data measurements were carried out at several points across the Langsa City area. Based on the result, it was found that presence of groundwater exists in the study area, indicated by the presence of aquifer layer at depth of 43 – 105 m beneath the surface with resistivity value of 31 – 45 Ωm.

Keywords: groundwater, aquifer, vertical electrical sounding, resistivity

Keywords

groundwater, aquifer, vertical electrical sounding, resistivity

Full Text:

PDF

References

Abdullahi, M.G., 2015. The Application of Vertical Electrical Sounding (VES) for Groundwater Exploration in Tudun Wada Kano State, Nigeria. Journal of Geology & Geosciences 04.

Anuar, U.M., Nordiana, M.M., 2018. Aquifer Detection Using 2-D Resistivity Method and Porosity Calculation. Jurnal Teknologi 80.

Bennett, J., Bridge, D., Cameron, N., Djunuddin, A., Ghazali, S., Jeffery, D., Kartawa, W., Keats, W., Rock, N., Thomson, S., 1981. Geologic map of the Banda Aceh quadrangle, Sumatra. Geol. Res. Dev. Cent., Bandung, Indonesia.

Chandra, S., Dewandel, B., Dutta, S., Ahmed, S., 2010. Geophysical model of geological discontinuities in a granitic aquifer: Analyzing small scale variability of electrical resistivity for groundwater occurrences. Journal of Applied Geophysics 71, 137–148.

Darsono, D., 2016. Identifikasi Akuifer Dangkal dan Akuifer Dalam dengan Metode Geolistrik (Kasus: Di Kecamatan Masaran). Indonesian Journal of Applied Physics 6, 40.

Dzakiya, N., Zakaria, M.F., Setiawan, D.G.E., Laksmana, R.B., 2021. Study of Groundwater Types Using the Vertical Electrical Sounding (VES) Method in the ‘Martani Field’ Ngemplak District of Yogyakarta. Journal of Applied Geospatial Information 5, 457–461.

Google Earth, 2023.

Hutabarat, L.O., Putra, R.A., 2020. Identifikasi Pola Sebaran Air Tanah di Gampong Lengkong Melalui Anomali Self-Potential. Jurnal Hadron 2.

Iswahyudi, 2020. Biofisik Karakteristik Biofisik Kota Langsa, Aceh. Agrosamudra 7, 31–41.

Loke, M.H., 2004. Tutorial: 2-D and 3-D electrical imaging surveys.

Mohamaden, M., S., A.-S., AbdAllah, G., 2009. Geoelectrical Survey for Groundwater Exploration at the Asyuit Governorate, Nile Valley, Egypt. Journal of King Abdulaziz University-Marine Sciences 20, 91–108.

Mohamaden, M.I.I., 2009. Groundwater exploration at Rafah, Sinai Peninsula, Egypt. Egyptian Journal of Aquatic Research 35, 49–68.

Mohamaden, M.I.I., Ehab, D., 2017. Application of electrical resistivity for groundwater exploration in Wadi Rahaba, Shalateen, Egypt. NRIAG Journal of Astronomy and Geophysics 6, 201–209.

Mohamaden, M.I.I., Shagar, S.A., 2009. Structural effect on the groundwater at the Arish City, north eastern part of Sinai Peninsula, Egypt. Egyptian Journal of Aquatic Research 35, 31–47.

Nurwidyanto, M.I., Yustiana, M., Widada, S., 2006. Pengaruh Ukuran Butir Terhadap Porositas dan Permeabilitas pada Batupasir (Studi Kasus: Formasi Ngrayong, Kerek, Ledok dan Selorejo). Berkala Fisika 9, 191–195.

Pemerintah Kota Langsa, 2019. Grand Design Pembangunan Kependudukan Kota Langsa 2012-2035.

Reynolds, J.M., 2011. An introduction to applied and environmental geophysics, 2nd ed. ed. Wiley-Blackwell, Chichester, West Sussex ; Malden, Mass.

Rosid, M.S., Tullailah, N.N., Wibowo, R.A., 2020. Identifikasi potensi jebakan hidrokarbon di daerah “X” sedimen pra-tersier cekungan Sumatra Utara menggunakan data gravitasi dan seismik. Jurnal Fisika 10, 8–21.

Supriyadi, ., Nur Fitrianto, T., Susanto, H., 2018. Vertical Electrical Sounding Survey to Determine Groundwater Potential in Sekaran, Gunungpati, Semarang, Indonesia:, in: Proceedings of the 7th Engineering International Conference on Education, Concept and Application on Green Technology. Presented at the The 7th Engineering International Conference (EIC), Engineering International Conference on Education, Concept and Application on Green Technology, SCITEPRESS - Science and Technology Publications, Semarang, Indonesia, pp. 125–129.

Suryadi, A., Putra, D.B.E., Kausarian, H., Prayitno, B., Fahlepi, R., 2018. Groundwater exploration using Vertical Electrical Sounding (VES) Method at Toro Jaya, Langgam, Riau. Journal of Geoscience, Engineering, Environment, and Technology. Technol. 3, 226.

Susana, T., 2003. Air Sebagai Sumber Kehidupan. Oseana 28, 17–25.

Syukri, M., 2020. Prediction of Soil Liquefaction Phenomenon in Banda Aceh and Aceh Besar, Indonesia Using Electrical Resistivity Tomography (ERT). GEOMATE 18.

Telford, W.M., Geldart, L.P., Sheriff, R.E., 1990. Applied geophysics, 2nd ed. ed. Cambridge university press, Cambridge New York Port Chester [etc.].

DOI: https://doi.org/10.29103/tj.v13i1.819