Aquifers selection to aid geoelectrical methods on drilled well building near the beach

I Nengah Simpen; I Wayan Redana; Ni Nyoman Pujianiki; Ika Umratul

doi:10.21744/ijpse.v1i3.66

Authors

I Nengah Simpen
simpen.nengah@yahoo.com
Physics Department, Faculty of Mathematics and Science, Udayana University Denpasar, Bali-Indonesia
I Wayan Redana Engineering Doctorate Program, Udayana University, Jl. P.B. Sudirman Denpasar, Bali-Indonesia
Ni Nyoman Pujianiki Engineering Doctorate Program, Udayana University, Jl. P.B. Sudirman Denpasar, Bali-Indonesia
Ika Umratul Physics Department, Faculty of Mathematics and Science, Udayana University Denpasar, Bali-Indonesia

Keywords:

Aquifer, Drill well, Geoelectric method, Near beach, Sea water

Abstract

The aquifer was a rock form wherein the water was collected and as well as able to release water economically. The aquifers near the beach were susceptible to intruded sea water, especially areas that have a lot of groundwater taking, therefore, if building a well, should be chosen aquifer that had not been intruded sea water. It was needed a way thus, the water taken is not salt water or brackish water. This study has a long-term goal of finding a way to choose aquifer by geoelectric method aid. In order to build a drilled well, for getting the right aquifer. The research had been conducted in Candidasa Karangasem Bali with the geoelectric method. The results showed that there were two aquifers types, i.e. free aquifer with resistivity was 33.9 ohm.m and distressed aquifer with a resistivity was 70 ohm.m. Taking into account the two resistivity magnitudes, then, the free aquifer was thought to have been intruded by the sea water, while the distressed aquifer was thought to have not been intruded by sea water.

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