CARVALHO, LEONISIA DA SILVA (2016) PENENTUAN KEDALAMAN AKUIFER AIRTANAH DENGAN MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER KABUPATEN BANGKALAN, PROPINSI JAWA TIMUR. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
ABSTRAK
Penelitian ini dilakukan dengan menggunakan metode geolistrik konfigurasi Schlumberger di
Kabupaten Bangkalan, Propinsi Jawa Timur. Penyelidikan menggunakan metode geolistrik ini dilakukan
untuk interpretasi nilai kedalaman dan ketebalan akuifer airtanah berdasarkan penampang 2D resistivitas
sounding serta penyebaran akuifer airtanah dengan model 3D resistivitas dibawah permukaan.
Pada pengukuran geolistrik Schlumberger terdapat 32 lintasan dengan panjang lintasan 250
meter. Pengolahan data menggunakan software MS.Excel 2007 (Tabel Data), Surfer 11 (Desain Survey
dan Peta Debit Air), Ipi2win (Grafik dan Tabel), Corel Draw (Korelasi) dan Rockworks 14 (peta 3D).
Konfigurasi Schlumberger menggunakan dua elektroda arus yang sering dinamakan A,B dan dua
elektroda potensial yang dinamakan M,N. Pada konfigurasi Schlumberger, dua elektroda potensial (MN)
diletakkan diantara dua elektroda arus (AB). Jarak elektroda potensial (MN/2) dibuat tetap, tetapi jarak
antara elektroda arus (AB/2) diubah-ubah agar diperoleh banyak informasi tentang bagian dalam bawah
permukaan tanah.
Hasil interpretasi geolistrik berdasarkan penyebaran pola resistivitas geolistrik menunjukkan
keberadaan suatu akuifer dengan nilai resistivitas sekitar 20 – 50 ohm.m yang diidentifikasi sebagai
Batupasir Akuifer Airtanah. Terdapat 2 akuifer yaitu: akuifer dangkal dengan kedalaman akuifer dangkal
5 – 20 meter serta ketebalan mulai 5 – 10 meter dan akuifer dalam lebih dari 50 meter serta ketebalan
lebih dari 20 meter. Pola distribusi akuifer (airtanah) berdasarkan data model 3D untuk batupasir
menunjukkan pola kemenerusan yang bervariasi berdasarkan kedalaman. Persebaran akuifer dangkal
keseluruh daerah penelitian, sedangkan untuk akuifer dalam cenderung ke bagian barat daerah penelitian.
Berdasarkan peta debit air yang diperoleh maka dibagi dalam tiga zona yaitu: pola debit kecil untuk zona
perkebunan, pola debit sedang untuk pemukiman, pola debit besar untuk zona industri.
Kata kunci : geolistrik, resistivitas, akuifer (airtanah)
ABSTRACT
This research was conducted by using geoelectric method Schlumberger configuration in
Bangkalan, East Java. The investigation was carried out using geoelectric method for
interpretation of the value of the depth and thickness of the aquifer groundwater based crosssectional
2D resistivity sounding and the spread of groundwater aquifers with 3D models of
subsurface resistivity.
At Schlumberger geoelectric measurements are 32 tracks with a course length of 250 meters.
Data processing using software Ms.Excel 2007 (Table Data), Surfer 11 (Design Survey and Map
Debit Water), Ipi2win (Graph and Table), Corel Draw (correlation) and Rockworks 14 (3D
map). Schlumberger configuration using two current electrodes are often called A, B and two
potential electrodes, called M, N. At Schlumberger configuration, two potential electrodes (MN)
placed between two electrodes flow (AB). Potential electrode spacing (MN / 2) was fixed, but
the distance between the current electrodes (AB / 2) be changed in order to obtain a lot of
information about the interior of the subsurface.
The results of geoelectric interpretation based deployment patterns geoelectric resistivity
indicates the presence of an aquifer with a resistivity value of approximately 20-50 ohm.m
identified as Sandstone Aquifer Groundwater. There are two aquifers, namely: the shallow
aquifer at a depth of the shallow aquifer 5-20 meters and thickness from 5-10 meters and aquifers
in more than 50 meters and a thickness of more than 20 meters. The pattern of distribution of
aquifers (groundwater) is based on the 3D model data for sandstone shows a pattern that varies
based on the depth continuity. Distribution of shallow aquifers throughout the research area,
while to the aquifer in the western part of the region tend to research. Based on water flow map
obtained then divided into three zones, namely: a small discharge pattern for plantation zone,
discharge patterns are for residential, large discharge pattern for industrial zones.
Keywords: geoelectric, resistivity, aquifers (groundwater)
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | T Technology > T Technology (General) |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Basir Umaryadi |
| Date Deposited: | 18 May 2016 01:40 |
| Last Modified: | 18 May 2016 02:00 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/1284 |
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