Analysis the Effect of Physical Parameters on Groundwater Salinity in the KEK Mandalika Lombok
Abstract
KEK Mandalika is located in a coastal area which is very vulnerable to changes in the quantity and quality of groundwater due to seawater intrusion. This study aims to detect the presence of aquifers (groundwater), seawater intrusion and analyze the effect of physical parameters to determine groundwater quality in the KEK Mandalika area. The physical parameters used are: resistivity, conductivity, Total Dissolved Solid (TDS) and salinity. The resistivity value was obtained using the geoelectric resistivity method with 10 lines using a dipole-dipole configuration, while the other parameters were obtained through 10 samples of well water which were located adjacent to the geoelectric line. Resistivity geoelectrical data processing using Res2Dinv software, Surfer13 software to observe the spread of each parameter and perform regression analysis to see the effect of resistivity, conductivity, TDS on salinity. The results obtained are geoelectric resistivity in the form of an aquifer layer around the KEK Mandalika at a depth of (2 – 12) meters with resistivity values ranging from (0 – 2257) Ωm. The results of groundwater samples are: conductivity with values ranging from (1.02 – 20) mS/cm, TDS with values ranging from (67.3 – 3070) mg/L and salinity with values ranging from (0.05 – 2.07) ppt. The effect of conductivity, TDS on salinity is directly proportional, while the effect of resistivity on salinity is inversely proportional. Most of the KEK Mandalika area is likely to experience seawater intrusion, especially in the Eastern region.
Keywords
Full Text:
PDFReferences
Amri, H. (2018). Sistem Pengukuran Kualitas Air Bersih Berbasis Mikrokontroler Arduino. Prosiding Seminar Nasional Fisika Universitas Riau ke-3 Pekanbaru
As’ari, Seni H.J. Tongkukut. (2016). Metode Geolistrik KOnfigurasi Dipole-Dipole Untuk Identifikasi Daereah Patahan Manado di Kecamatan Singkil Kota Manado. JURNAL MIPA UNSRAT ONLINE. Vol. 5 Nomor 2, 1 Agustus 2016
Hasan I. 2001. Pokok-pokok Materi Statistik 2. PT. Bumi Aksara: Jakarta
Hastono, S. P., (2006), Basic Data Analysis for Health Research. Universitas Indonesia (UI): Fakultas Kesehatan Masyarakat
Hilmi, A., A. M Ulfa, A. Wijaya. 2021. Study of seawater intrusion in coastal aquifer using total dissolved solid, conductivity and salinity measurement in Labuhan Kertasari Village, West Sumbawa. Journal of Physics: Conference Series The 10th International Conference on Theoretical and Applied Physics (ICTAP2020)
Indriastoni, Novi R. 2014. Intrusi Air Laut Terhadap Kualitas Air Tanah Dangkal di Kota Surabaya. Jurnal Rekayasa Teknik Sipil. Vol.3. No.3.
Kamal Z. A., Sulaiman M. S., Hakim K., Thilageswaran, Syahira A., Hamzah Z., and Khan M. M. A. 2020. Investigation of Seawater Intrusion in Coastal Aquifers of Kelantan, Malaysia Using Geophysical and Hydrochemical Techniques. 2nd International Conference on Tropical Resources and Sustainable Sciences IOP Conf. Series: Earth and Environmental Science 549, 012018 IOP Publishing doi:10.1088/1755-1315/549/1/012018
Kazakis N., Pavlou A., Vargemezis G., Voudouris K. S., Soulios G., pliakas F., and Tsokas G. 2016. Seawater Intrusion Mapping Using Electrical Resistivity Tomography and Hydrochemical Data. An Application In The Coastal Area of Eastern Thermaikos Gulf, Greece, Sci. Total Environ., vol. 543, pp. 373 – 387.
Khairunnas and M. Gusman. 2018. Analisis Pengaruh Parameter Konduktivitas, Resistivitas dan TDS Terhadap Salinitas Air Tanah Dangkal pada Kondisi Air Laut Pasang dan Air Laut Surut di Daerah Pesisir Pantai Kota Padang. Jurnal Bina Tambang, Vol.3, No.4 1751
Khalil, M. A., & Santos, F. A. M. 2013. 2D and 3D resistivity inversion of Schlumberger vertical electrical soundings in Wadi El Natrun, Egypt: A case study. Journal of Applied Geophysics, Vol. 89, pp. 116-124.
Laode M. S., Bambang S., Yadi A. 2020. Groundwater Change Detection by Gravity Measurement on Northern Coast of Java: A Case Study in Semarang City of Central Java of Indonesia. IOP Conf. Series: Materials Science and Engineering 797, 01 2032 doi:10.1088/1757-899x/797/1/012032
Mangga A. S., Atmawinata S., Hermanto B., Setyonugroho B., and Amin T. C., (1995), Geological Map Sheet Lombok, West Nusa Tenggara, Geological Research and Development Center
Nurrohim, Ahmad, Tjaturahono, BS. and Wahyu Setyaningsih. 2012. Kajian Intrusi Air laut di Kawasan Pesisir Kecamatan dan Kabupaten Rembang. Jurusan Geografi, Fakultas Ilmu Sosial, Universitas Negeri Semarang.
Obikoya, I. B., & Bennell, J. D. 2012. Geophysical investigation of the fresh-saline water interface in the coastal street of Abergwyngregyn. Journal of Environmental Protection, Vol. 3, pp. 1039-1046
Rohmah S. A., Sukir Maryanto, dan Susilo A. 2018. Identifikasi Air Tanah Daerah Agrotechno Park Cangar Batu Jawa Timur Berdasarkan Metode Geolistrik, Jurnal Fisika dan Aplikasinya Vol 14 Nomer 1, pp 5-11
Santoso, Budi. 2018. Identifikasi Akuifer Menggunakan Metode Geolistrik Resistivitas Di Daerah Bebandem, Karang Asem, Bali. Eksakta Vol. 19, Nomor 1.
Sunaryo, Marsudi S., and Anggoro S. 2018. Identification of Sea Water Intrusion at the Coast of Amal, Binalatung, Tarakan by Means of Geoelectrical Resistivity Data, Disaster Adv., vol. 11, no. 6, pp. 23 – 29.
Susilo A., and Fitriah F. 2018. Groundwater Investigation Using Resistivity Method and Drilling for Drought Mitigation In Tulungagung, Indonesia, International Journal of GEOMATE, vol. 15, no. 47, pp. 124 – 131.
Telford, W.M., Geldart, L.P., Sheriff, R. E., (1990), Applied Geophysics Second Edition. Cambridge: Cambridge University Press.
Tomozawa Y., Onodera S., Saito M. 2019. Estimation of Groundwater Recharge and Salinization in a Coastal Alluvial Plain and Osaka, International Journal of GEOMATE. vol. 16, no. 56, pp. 153 – 158.
DOI: https://doi.org/10.33394/j-ps.v9i2.4437
Refbacks
- There are currently no refbacks.
Copyright (c) 2021 Alfina Taurida Alaydrus, Adi Susilo, Suhayat Minardi, Agus Naba, Agus Wahid
This work is licensed under a Creative Commons Attribution 4.0 International License.
J-PS (Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram) p-ISSN (print) 2338-4530, e-ISSN (online) 2540-7899 is licensed under a Creative Commons Attribution 4.0 International License.