Groundwater Vulnerability from Sea Water Intrusion in Coastal Area Cilacap, Indonesia

https://doi.org/10.22146/ijg.18229

Setyawan Purnama(1*)

(1) Faculty of Geography, Universitas Gadjah Mada, Yogyakarta
(*) Corresponding Author

Abstract


The important issue relating to water resources is sea water intrusion (SWI) phenomena. Nowadays, the phenomena has become serious problem in the urban coastal area. Groundwater as main sources for domestic usage cannot be used again because of its salinity.Cilacap as one of urban coastal area also face the problem. In 1977 SWIwas detectedand experienced significant developmentsin 1996,This research was conducted to: (1) analyze agroundwater vulnerability to the SWI; (2) determine adistance and adepth theinterface; and (3) analyze relationship of the groundwater vulnerability to the interface depth.It was performed an analysis of the groundwater vulnerability to the SWI using the method of GALDIT, whereas the distance and depth of the interface was determined using the method of DupuitGhyben-Herzberg. The linkage analysis of the groundwater vulnerability to the depth of the actual interface was conducted by quantitative descriptively.The results showed that the distance from the shoreline was the most determined factor of the groundwater vulnerability to the SWI, the closer to the shoreline the more swallow the depth of the interface.  It existed the relevance between the vulnerability level of groundwater to the SWI with the depth of actual interface. The regions with low level of vulnerability had deep interface depth, whereas the regions with moderate level of vulnerability had swallow interface depth.  Nevertheless, the SWI has not yet affected the groundwater in people wells because of its depth that was not yet exceeded of 25 m.so that this depth can be used as a reference in digging wells in the research area++


Keywords


groundwater vulnerability;saline water intrusion;interface;Cilacap

Full Text:

PDF


References

Achmad, R., Hadi, M., & Purnama, S. (2016). Vulnerability of sea water intrusion in Northern Coastal of Ternate Island. J. Manusia dan Lingkungan, 23(2), 163-168.

Basack, S., Bhattacharya, A., Sahana, C., & Maity, P. (2010). A study on saline water intrusion and fresh water recharge relevant to coastal environment. 3(5), 80-90.

Chachadi, A., & Lobo-Ferreira, J. (2005). Assessing aquifer vulnerability to sea water intrusion using GALDIT Method: Part 2–GALDIT Indicators Description. The Fourth Inter-Celtic Colloquium in Hydrology and Management of Water Resources. Guimaraes, Portugal.

Davie, T. (2008). Fundamentals of Hydrology. London: Routledge, Taylor & Francis Group.

Dayal, B., & Chauhan, R. (2010). Recharge of saline water aquifers with rain water and its impact on water quality and crop production. Biological Forum-An International Journal, 2(2), 36-37.

Fenta, A., & Kifle, A. (2014). Spatial Analysis of Groundwater Potential Using Remote Sensing and GIS-Based Multi-Criteria Evaluation in Raya Valley, Nothern Ethiopia. Hydrogeology Journal, 23, 195-206.

Fetter, C. (2001). Applied Hydrogeology. New Jersey: Prentice-Hall, Inc,.

Gwalema, S. (2011). Impacts of urban development pressure on coastal local communities in Tanzania. The Indonesian Journal of Geography, 43(2), 123-140.

Lobo-Ferreira, J. P., Chachadi, A., Diamantino, C., & Henriques, M. J. (2005). Assessing aquifer vulnerability to sea water intrusion using GALDIT Method: Part 1–Application to the Portuguese Aquifer of Monte Gordo . The Fourth Inter-Celtic Colloquium in Hydrology and Management of Water Resources. Guimaraes, Portugal.

Marandi, A., & Vallner, L. (2010). Upconingof saline water from the crystalline basement into the cambrian vendian aquifer system on The Kopli Peninsula, Northern Estonia. Estonian Journal of Earth Sciences, 59(4), 277-287.

Obikoya, I. B. (2010). Geohysical investigation ofthe fresh-saline water interface in the coastal area of Aberwyngregyn. MSc Thesis., School of Ocean Sciences, University of Wales, Bangor.

Pousa, J., Tosi, L., Kruse, E., Guaraglia, D., Bonardi, M., Mazzoldi, A., . . . Schnack, E. (2007). Coastal processes and environmental hazards: the Buenos Aires (Argentina) and Venetian (Italy) Littorals. Environ. Geol, 51, 1307–1316.

Purnama, S. (1996). Perkembangan intrusi air laut di Kota Administratif Cilacap. Laporan Penelitian, Fakultas Geografi UGM, Yogyakarta.

Purnama, S., Febriarta, E., Cahyadi, A., Khakim, N., Ismangil, L., & Prihatno, H. (2013). Identifikasi airtanah asin berdasar kanpendugaan geolistrik di pesisir Kota Cilacap Jawa Tengah. Geomedia :Jurnal Sains Geografi, 11(2), 183-190.

Rahmawati, N., Vullaume, J., & Purnama, S. (2013). Salt intrusion in coastal and lowland areas of Semarang City. Journal of Hydrology, 494, 146-159.

Rotzoll, Kolja, Oki, S., D., El-Kadi, & I., A. (2010). Changes of freshwater-lens thickness in basaltic Island aquifers overlain by thick coastal sediments. Hydrogeol. J, 18, 1425–1436.

Rushton, K. (2003). Groundwater Hydrology : Conceptual and Computational Models. The Atrium, Southern Gate, Chichester,West Sussex : John Wiley & Sons Ltd.

Simoen, S., Darmanto, D., & Darsomartoyo, S. (1977). A short note on a geoelectric survey in the Cilacap Area, Central Java. The Indonesian Journal of Geography, 7(34), 102-114.

Tillman, F., & Leake, S. (2010). Trends in groundwater levels in wells in the active management areas of Arizona, USA. Hydrogeol. J, 18, 1515–1524.

Todd, D., & Mays, L. (2005). Groundwater Hydrology. New York: John Wiley & Sons.

Waikar, M., & Nilawar, A. (2014). Identification of Groundwater Potential Zone Using Remote Sensing and GIS Technique. International Journal of Innovative Research in Science Engineering and Technology, 3(5), 12163-12174.

Young Kim, K., Suk Park, Y., & Pyo Kim, G. (2009). Dynamic freshwater–saline water interaction in the coastal zone of Jeju Island, South Korea. Hydrogeol. J, 17, 617–629.

 



DOI: https://doi.org/10.22146/ijg.18229

Article Metrics

Abstract views : 479 | views : 426

Refbacks

  • There are currently no refbacks.




Copyright (c) 2019 Indonesian Journal of Geography

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Accredited Journal, Based on Decree of the Minister of Research, Technology and Higher Education, Republic of Indonesia Number 30/E/KPT/2018, Vol 50 No 1 the Year 2018 - Vol 54 No 2 the Year 2022

ISSN 2354-9114 (online), ISSN 0024-9521 (print)

Web
Analytics IJG STATISTIC