Rustadi, Rustadi and Darmawan, I Gede Boy and Haerudin, Nandi and Suharno, Suharno and Setiawan, Agus Similarity_Geophysical approach for assessment of seawater intrusion in the coastal aquifer of Bandar Lampung, Indonesia. IC-STAR 2020. (Unpublished)
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Abstract
Overexploitation in 1980-2000 caused a lot of groundwater loss in the aquifer coastal of Bandar Lampung. Groundwater has been degraded with increasing salinity due to the intrusion of seawater. In 2013, the intrusion extended 400 m from the coastline. Subsurface geological mapping is carried out to examine alluvial formation's material constituents and the ability to transfer seawater to land. Three well explorations combined with three geoelectric tomography and 51 points of gravity. The gravity method is used to map structures that can connect coastal aquifers and land aquifers. Meanwhile, geoelectric tomography to map the presence of aquifers and low resistivity zones by seawater intrusion. The coastline has relatively shallow aquifers at a depth of 2 - 10 m in a sand layer with coral inserts, while the lower part is composed of silt and clay. The aquifer has experienced a decrease in resistivity of fewer than 10 ohms.m appears in the three circular patterns, caused by seawater. In addition to the permeable zone of shallow aquifers, there is a northwestsoutheast trending structure that can channel seawater to land aquifers.
| Item Type: | Other |
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| Subjects: | Q Science > QE Geology |
| Divisions: | Fakultas Teknik (FT) > Prodi Teknik Geofisika |
| Depositing User: | NANDI HAERUDIN - |
| Date Deposited: | 24 Mar 2023 01:27 |
| Last Modified: | 24 Mar 2023 01:27 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/48999 |
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