Rustadi, Rustadi and I Gede Boy Darmawan, GBD and Nandi Haerudin, NH and Suharno, Suharno and Agus Setiawan, Agus (2020) Geophysical Approach for Assessment of Seawater Intrusion in the Coastal Aquifer of Bandar Lampung, Indonesia. Ic-Star Prosiding, 1 (1). pp. 1-200. ISSN 72-78 (Submitted)

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Abstract

Overexploitation in 1980-2000 caused a lot of loss of groundwater in the aquifer coastal of Bandar Lampung. Groundwater has been degraded with increasing salinity due to the intrusion of seawater. In 2013, the intrusion has extended 400 m from the coastline. Subsurface geological mapping is carried out with the aim of examining the material constituents of alluvial formations and the ability to transfer seawater to land. Combined research through 3 well exploration, combined with 3 geoelectric tomography and 51 points of gravity. The gravity method used to map the existence of structures that can connect coastal aquifers and land aquifers. 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 northwest southeast trending structure, which can be channeling seawater to land aquifers.

Item Type: Article
Subjects: T Technology > TN Mining engineering. Metallurgy
Divisions: Fakultas Teknik (FT) > Prodi Teknik Geofisika
Depositing User: RUSTADI
Date Deposited: 20 Nov 2020 07:00
Last Modified: 20 Nov 2020 07:00
URI: http://repository.lppm.unila.ac.id/id/eprint/26478

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