Pemodelan Intrusi Air Asin Pada Akuifer Pantai (Studi Kasus: DKI Jakarta)

Alan Wijaya, Arno Adi Kuntoro, Edy Anto Soentoro Gondodinoto

Abstract


Main issues frequently faced by communities living in the city of Jakarta is salt water intrusion. This paper analyzes the extent of the distribution of saltwater contamination to coastal aquifers in Jakarta, the method used is the open source program FREEWAT. modeling is carried out in five scenarios, namely (1) reduction of 50% of groundwater use, (2) reduction of 25% of groundwater use, (3) existing groundwater use in 2012, (4) increase of 25% of groundwater use, and (5) increase of 50% of groundwater use. From the modeling results, the distribution of saltwater contamination on each layer of the aquifer of Jakarta. In unconfined aquifer the existing condition is scenario 3 intrusion as far as 1.604 m, on scenario 1 there is an intrusion decrease of 38%, in scenario 2 there is an intrusion decrease of 13%, in scenario 4 there is an increase in intrusion by 17% and on scenario 5 increase intrusion by 25%. In upper confined aquifer, the existing condition, namely scenario 3, has occurred as much as 1.809 m intrusion, in scenario 1 there is an intrusion decrease of 23%, in scenario 2 there is an intrusion decrease of 8%, in scenario 4 there is an increase in intrusion by 19% and in scenario 5 increase intrusion by 26%. In middle confined aquifer, the existing condition is scenario 3, 1.927 m intrusion occurs, on the scenario 1 there is an intrusion decrease of 23%, in scenario 2 there is an intrusion decrease of 9%, in scenario 4 there is an increase in intrusion by 16% and in the scenario 5 increase intrusion by 22%.

Keywords


Groundwater; Intrusion; Salt Water; FREEWAT; Jakarta

Full Text:

PDF

References


BPS. (2018). Berapa Jumlah Penduduk Jakarta? Retrieved, 2018, from Katadata: https://databoks.katadata.co.id/datapublish/2018/01/24/berapa-jumlah-penduduk-jakarta

Delinom, R., Lubis, R. F., Shimada, J., & Taniguchi, M. (2010). Groundwater Characteristic in Jakarta Area, Indonesia. ResearchGate. http://DOI:10.14203/risetgeotam2010.v20.35

Filippis, G. D., Ghetta, M., Neumann, J., Cardoso, M., Cannata, M.,

Borsi, I., & Rossetto, R. (2017). FREEWAT User Manual (Vol. 1). Retrieved from http://www.freewat.eu/sites/default/files/FREEWAT_vol1.pdf

Geomagz. (2014). Air Tanah dan Pembangunan Bawah Tanah Jakarta. Retrieved 2018, from http://geomagz.geologi.esdm.go.id/air-tanah-dan-pembangunan-bawah-tanah-jakarta/

Guo, W., & Langevin, C. D. (2002). User’s Guide to SEAWAT: A Computer Program for Simulation of Three-Dimensional Variable-Density Ground-Water Flow. Florida: U.S. Geological Survey. Retrieved from https://fl.water.usgs.gov/PDF_files/twri_6_A7_guo_langevin.pdf

Harbaugh, A. W. (2005). MODFLOW-2005, The U.S. Geological Survey Modular Ground-Water Model-the Ground-Water Flow Process. Virginia: U.S. Geological Survey. Retrieved from http://inside.mines.edu/~epoeter/583CSM/DOC4_MODFLOW2005-TM6A16.pdf

Herlambang, A., & Indriatmoko, R. H. (2005). Pengelolaan Air Tanah dan Intrusi Air Laut. Jurnal Air Indonesia, 1. Retrieved from http://ejurnal.bppt.go.id/ejurnal2011/index.php/JAI/article/view/42/43

Indriatmoko, R. H. (2012). Kajian Intrusi Air Asin pada Sistem Akuifer Jakarta. Institut Pertanian Bogor, Magister Sains pada Program Studi Pengelolaan Daerah Aliran Sungai (DAS). Bogor: Institut Pertanian Bogor. Retrieved from http://repository.ipb.ac.id/jspui/bitstream/123456789/61513/1/2012rhi.pdf

Matahelumual, B. C. (2010). Kajian Kondisi Air Tanah Jakarta Tahun 2010. Jurnal Lingkungan dan Bencana Geologi, 1, 131- 149. Retrieved from http://www.bgl.esdm.go.id/publication/index.php/dir/article_download/288

Mukhtar, O., Pranantya, P. A., & Hadian, S. D. (2016). Manajemen Air Tanah Di Cekungan Air Tanah DKI Jakarta. In Seminar Nasional ke-III Fakultas Teknik Geologi Universitas Padjadjaran. Retrieved from http://seminar.ftgeologi.unpad.ac.id/wp-content/uploads/2016/07/2.15.pdf

Nimmo, J. R. (2004). Porosity and Pore Size Distribution. Encyclopedia of Soils in the, 3, 295 - 303. Retrieved from https://wwwrcamnl.wr.usgs.gov/uzf/abs_pubs/papers/nimmo.04.encyc.por.ese.pdf

Roover, S. d. (2015). Modeling the Jakarta Groundwater System : A Sensitivity Analysis. Universiteit Twente, Civi Engineering. Twente: Universiteit Twente. Retrieved from http://essay.utwente.nl/68510/1/Roover-Sam-de.pdf

Setiawan, T., Yermia, E., Purnomo, B. J., & Tirtomihardjo, H. (2017). Intrusi Air Lut pada Sistem Akuifer Tertekan Cekungan Air Tanah Jakarta Berdasarkan Analisis Hidrokimia dan Hidroisotop. Riset Geologi dan Pertambangan, 27, 1 - 14. http://doi:10.4203/risetgeotam 2017.v27.430

Wahyudi, F. R., & Moersidik, S. S. (2015). The Analysis of Groundwater Availability and Utility in DKI Jakarta. ScienceDirect, 799 - 807. https://doi.org/10.1016/j.sbspro.2016.06.148

Wandowo, dkk. (2001). Daerah Resapan Air Tanah Cekungan Jakarta. In Risalah Pertemuan Ilmiah Penelitian dan Pengembangan Aplikasi Isotop dan Radiasi. Retrieved from https://ansn.bapeten.go.id/files/41301/2312.pdf




DOI: https://doi.org/10.32679/jth.v10i1.583

Refbacks

  • There are currently no refbacks.


Copyright (c) 2019 JURNAL TEKNIK HIDRAULIK

Indexed by:
   Crossref logo 
 
       
 
 
 
Technical Support: