3D Resistivity Data Modelling to Identify Aquifer Geometry by Qualitative Analysis (Field Study: PDAM Surabaya Groundwater Conservation Area, Pasuruan)
The resistivity method is one of the geophysical methods used to identify the aquifer layer by utilizing the rock response to the flow of electric current. This method considered more effective and can give a good subsurface cross-section, especially the fluid response. In this research, 3D modelling for identify geometry of subsurface geological structures of this study focus in three area (Plintahan, Duren Sewu, and Karangjati) using 2D resistivity data. Data Measurement of 2D resistivity using Wenner-Schlumberger configuration with length of each line is 155 meters and the target depth is 30 meters. The purpose of this configuration is to get an inverse with a resolution that is good to the lateral and vertical. The results show that the types of rocks in the research area was clay, sand and sandy shale with resistivity value 50-150 ohm-meter where sand rocks interpreted as aquifer rocks at depths of 2-7 meters and a thickness of 2-5 meters. The result of the resulting 3D modelling showed that the aquifer layer in Plintahan area showed the geological continuity with anticline geometry, in another area the aquifer layer in Durensewu - Karang Jati area showed the aquifer geometry prediction but there is no continuity of the structure of each other.
Emch, P.G. dan W.W.G. Yeh. 1998. Management Model for Conjunctive Use of Coastal Surface water and Groundwater. Journal of Water Resources Planning and Management, American Society of Civil Engineers, 124 (3), 129
Fetter, C.W. 1994. Applied Hydrogeology. 3rd Ed. Merrill Publishing Company, Ohio, USA.Grigg, N.S., 1996. Water Resources Management. Mc Graw-Hill, New York, 29 – 59.
Mays, L.W. 1992. Water Resources Handbook, McGraw-Hill, Singapore 6.32 – 6.33.
Mays, L.W. dan Y.K. Tung (1992), Hydrosystem Engineering & Management, McGraw-Hill, Singapore, 1-20, 323-348
Nemec, J. 1972. Engineering Hydrology. Mc Graw Hill. London
Sosrodarsono, S. Dan K.Takeda,1993. Hidrologi Untuk Pengairan. Pradnya Paramita, Jakarta, 1-5
Suripin. 2001. Pelestarian Sumberdaya Air dan Tanah. Penerbit Andi, Yogyakarta
Ward, A. D. dan W. J. Elliot. 1995. Environmental Hydrology. CRC Press Inc., Florida.
W. M. Telford, L. P. Geldart, R. E. Sheriff. Applied Geophysics 2nd Edition. Cambridge University Press (1990) 283 – 292.
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