Designing Aquifer Model for the Banks of the Serayu River, Sokawera, Somagede, Banyumas, Indonesia by Means of 1D-Electrical Resistivity Data
DOI:
https://doi.org/10.5614/j.math.fund.sci.2021.53.3.1Keywords:
1D-Electrical Resistivity, aquifer, hydrostratigraphic model, Serayu riverbanks, SokaweraAbstract
A geoelectric survey using the 1D-electrical resistivity method was applied to design a groundwater aquifer model for the banks of the Serayu River in Sokawera Village, Somagede District, Banyumas Regency, Indonesia. The aim of this research was to identify the characteristics of aquifers in the research area based on resistivity log data. Acquisition, modeling, and interpretation of resistivity data were carried out and the results were lithological logs at seven sounding points. Correlation between the lithological logs resulted in a hydrostratigraphic model. This model is composed of several hydrological units, i.e. shallow aquifer, aquitard, and deep aquifer. The shallow aquifers are composed of sandy clay (10.81-18.21 Wm) and clayey sand (3.04-7.43 Wm) with a depth of groundwater from the water table to 27.51 m. The deep aquifers are composed of sandstone with variation of porosity (2.24-12.04 Wm) at a depth of more than 54.98 m. Based on this model, potential shallow aquifers were estimated to be at sounding points Sch-5, Sch-6, and Sch-7. This hydrostratigraphic model shows that the two types of aquifers are separated by an aquitard layer, allowing groundwater infiltration from the shallow aquifer to the deep aquifer and vice versa. Moreover, the Serayu riverbanks in this research area are estimated to be a groundwater discharge area.
References
Wisatakita.com, Serayu River, Wisata Kita, https://wisatakita.com/wisata/ Jawa.Tengah/Wonosobo/Sungai, (14 November 2020).
Purnama, S., Potential Water Resources of Serayu Watershed, Journal of Environmental Engineering, 6(3), pp. 291-303, 2010.
Munir, A., Characteristics of the Serayu Watershed Area, Central Java Province, Based on Physical, Social, and Economic Conditions, Task of Watershed Management Subject, Department of Geography, University of Indonesia, Jakarta, 2009.
Kompas.com, Drought Widespread in Banyumas, 73,377 People Rely on Clean Water Aid, Kompas Cyber Media, https://regional.kompas.com/ read/2019/10/27/15374321, (27 October 2019).
Sehah & Hartono, Utilization of Resistivity Methods to Identify Groundwater Aquifers in Critical Areas of the Serayu Watershed Karangsari Village and Penggalang Village Adipala District Cilacap Regency, SIMETRI: Jurnal Ilmu Fisika Indonesia, 2(2), pp. 49-56, 2016.
Edwards, P.J., Williard, K.W.J. & Schoonover, J.E., Fundamentals of Watershed Hydrology, Journal of Contemporary Water Research and Education, 154, pp. 3-20, 2015.
Asikin, S., Handoyo, A., Prastistho, B. & Gapoer, S., Geological Map of Banyumas Quadrangle, Geological Research and Development Center, Bandung, Indonesia, 1992.
Akinlalu, A.A., Adegbuyiro, A. & Obore, A.A., Application of Electrical Resistivity Method in Designing a Structural Model for a Proposed Filling Station Site, Akure, Southwestern Nigeria. Global Journal of Science Frontier Research: A Physics and Space Science, 16(6), 2016.
Morries, B., Hydrogeological Environments, Groundwater and Its Susceptibility to Degradation: A Global Assessment of the Problem and Options for Management, Gill Tyson and Friends, British Geological Survey, pp. 9-18, 2003.
Sehabbudin, M., Dianto, A., Subehi, L. & Irianto, S., Characteristic Aquifer in Volcanic Terrains: Case Study at Caldera Lake Maninjau, West Sumatera-Indonesia. International Symposium on Geophysical Issues. IOP Conference Series: Earth and Environmental Science 311, pp. 71-73, 2019. (Conference proceedings)
Ismail, M. & Mohamaden, I., Delineating Groundwater Aquifer and Subsurface Structures by Using Geoelectrical Data: Case Study (Dakhla Oasis, Egypt), Journal of Astronomy and Geophysics, 5, pp. 247-253, 2016.
Ugwu, N.U., Ranganai, R.T., Simon, R.E. & Ogubazghi, G., Geoelectric Evaluation of Groundwater Potential and Vulnerability of Overburden Aquifers at Onibu-Eja Active Open Dumpsite, Osogbo, Southwestern Nigeria, Journal of Water Resource and Protection, 8, pp. 311- 329, 2016.
Sehah & Hartono, Investigation of Groundwater Aquifer Characteristics in Critical Land Areas in Serayu Watershed, Wlahar Village, Adipala District, Cilacap Regency, Development of Local Excellence Based Science and Technology Research for Community Empowerment. Department of Physics, Semarang State University, 2011. (Conference proceedings)
Sehah & Aziz, A.N., Estimation of Groundwater Depth Using the Geoelectric Method with Schlumberger Configuration in Bojongsari Village, Alian District, Kebumen Regency. Jurnal Neutrino: Jurnal Fisika dan Aplikasinya, 8(2), pp. 41-49, 2016.
Telford, W.M., Gedaart, L.P. & Sheriff, R.E., Applied Geophysics, 2nd ed., Cambridge University Press, 283-291, 1990.
Ugwu, N.U., Ranganai, R.T., Simon, R.E. & Ogubazghi, G., Application of Geoelectrical Resistivity Method to the Assessment of Groundwater Pollution: A Case Study of Onibu-Eja Active Open Dumpsite, Osogbo, Southwestern Nigeria, International Journal of Environmental Protection, 6(1), pp. 160-174, 2016.
Pang, X., Chen, D., Liu, K. & Jiang, Z., The Concept of Fluid Potential and Its Practical Application to Petroleum Exploration, Energy Exploration & Exploitation, 30(6), pp. 889-914, 2012.
Fricke, W., Review: Water Transport and Energy, Plant, Cell and Environment, 40, pp. 977-994, 2017, doi: 10.1111/pce.12848.
Ewaid, S.H. & Abed, S.A., Water Quality Index for Al-Gharraf River, Southern Iraq, Egyptian Journal of Aquatic Research, 43, pp. 117-122, 2017.
Pal, M., Samal, N.R., Roy, P.K. & Roy, M.B., Electrical Conductivity of Lake Water as Environmental Monitoring ? A Case Study of Rudrasagar Lake, IOSR Journal of Environmental Science, Toxicology and Food Technology, 9(3), pp. 66-71, 2015.
Al-Sudani, H.I., Hydraulic Parameters of Groundwater Aquifers in Khan-Al-Baghdadi Area, Engineering and Technology Journal, 36B(2), pp. 136-146, 2018.
ZhiFang, Z., QiaoNa, G. & Zhi. D., Delayed Drainage of Aquitard in Response to Sudden Change in Groundwater Level in Adjacent Confined Aquifer: Analytical And Experimental Studies, Chinese Science Bulletin, 58(25), pp. 3060-3069, 2013, doi: 10.1007/s11434-013-5730-5.
Ebong, E.D., Akpan, A.E. & Onwuegbuche, A.A., Estimation of Geohydraulic Parameters from Fractured Shales and Sandstone Aquifers of Abi (Nigeria) Using Electrical Resistivity and Hydrogeologic Measurements, Journal of African Earth Sciences, 96, pp. 99-109, 2014.
