Using a time lapse microgravity model for mapping seawater intrusion around Semarang
- Physics Department, Semarang State University (UNNES), D7 Building 2nd Floor FMIPA Sekaran Gunungpati (Indonesia)
- Badan Meteologi Klimatologi Goefisika (BMKG), Jl.Angkasa I No.2 Kemayoran Jakarta Pusat (Indonesia)
- Physics Department, Diponegoro University (UNDIP), Jl. Prof. Soedharto, Tembalang, Semarang (Indonesia)
A modeling of time-lapse microgravity anomaly due to sea water intrusion has been conducted. It used field data of aquifer cross section, aquifer thickness and lithology of research area. Those data were then processed using Grav3D and Surfer. Modeling results indicated that the intrusion of sea water resulting in a time-lapse microgravity anomalies of 0.12 to 0.18 mGal, at soil layer density of 0.15 g/cm{sup 3} to 0.3 g/cm{sup 3} and at depth of 30 to 100 m. These imply that the areas experiencing seawater intrusion were Tanjung Mas, SPBE Bandarharjo, Brass, Old Market Boom and Johar as the microgravity measured there were in the range of 0.12 to 0.18 mGal and the density contrast were at 0.15 g/cm{sup 3} to 0.28 g/cm{sup 3}. Areas that experienced fluid reduction were Puri Anjasmoro, Kenconowungu and Puspowarno with microgravity changes from -0.06 mGal to -0.18 mGal.
- OSTI ID:
- 22590887
- Journal Information:
- AIP Conference Proceedings, Vol. 1719, Issue 1; Conference: 4. international conference on theoretical and applied physics (ICTAP) 2014, Bali (Indonesia), 16-17 Oct 2014; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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