Alamsyah, Ahmad Syarifudin (2025) Identifikasi Akuifer Menggunakan Metode Geolistrik Resistivitas 2D dan Automatic Audio-frequency Magnetotelluric (ADMT) di Kecamatan Kabuh, Kabupaten Jombang. Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 5017211018-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
5017211018-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (7MB) | Request a copy |
Abstract
Air tanah merupakan sumber daya vital yang menunjang berbagai kebutuhan, seperti domestik, pertanian, dan industri. Penelitian ini bertujuan mengidentifikasi lapisan akuifer di Kecamatan Kabuh, Kabupaten Jombang, menggunakan metode geolistrik resistivitas 2D dan Automatic Audio-Frequency Magnetotelluric (ADMT). Data geolistrik resistivitas 2D digunakan untuk memetakan variasi resistivitas bawah permukaan, sementara metode ADMT memanfaatkan sensor elektromagnetik nirkabel untuk mendeteksi anomali resistivitas yang mengindikasikan keberadaan akuifer. Integrasi kedua metode ini diharapkan dapat meningkatkan akurasi dalam interpretasi data dan meminimalkan ketidakpastian. Penelitian metode geolistrik resistiivtas 2D dilakukan sebanyak 10 lintasan dengan tujuh lintasan sepanjang 470 meter dan tiga lintasan sepanjang 705 meter. Hasil pemodelan geolistrik resistivitas 2D menunjukkan lapisan akuifer diduga terdapat pada lintasan 3 dengan nilai resistivitas 23.97–79.4 Ohm.m, lintasan 8 dengan nilai resistivitas 31.46 Ohm.m pada kedalaman 30-50 meter, dan lintasan 10 dengan nilai resistivitas 26.01-34.68 Ohm.m pada kedalaman 25-50 meter dengan penyebaran berupa akuifer setempat. Hasil pemodelan ADMT menunjukkan lapisan dengan tingkat kejenuhan air yang tinggi diduga terdapat pada lintasan 2 pada kedalaman 20-25 meter, 70-120, dan 170 meter. Kemudian pada lintasan 3 pada kedalaman 20-25 meter dan 55-100. Kemudian pada lintasan 4 pada kedalaman 10-20 meter dan 50-118 meter. Kemudian pada lintasan 5 pada kedalaman 10-20 meter dan 60-100 meter. Kemudian pada lintasan 8 pada kedalaman 65-110 meter. Berdasarkan hasil visualisasi 2.5D, pola persebaran akuifer pada daerah penelitian menunjukkan persebaran yang bersifat setempat.
======================================================================================================================================
Groundwater is a vital resource that supports various needs, such as domestic, agriculture, and industry. This research aims to identify aquifer layers in Kabuh Subdistrict, Jombang Regency, using 2D resistivity geoelectric and Automatic Audio-Frequency Magnetotelluric (ADMT) methods. 2D resistivity geo-electrical data is used to map subsurface resistivity variations, while the ADMT method utilises wireless electromagnetic sensors to detect resistivity anomalies that indicate the presence of aquifers. The integration of these two methods is expected to improve accuracy in data interpretation and minimise uncertainty. The 2D resistivity geoelectric method research was conducted as many as 10 passes with seven passes of 470 metres and three passes of 705 metres. The results of 2D resistivity geoelectric modelling show that the aquifer layer is suspected to be located on track 8 and track 10 respectively at a depth of 30-50 metres and 25-50 metres with the distribution of local aquifers. ADMT modelling results show that layers with high water saturation levels are suspected to be present in track 2 at depths of 20-25 metres, 70-120, and 170 metres. Then on line 3 at a depth of 20-25 metres and 55-100. Then on line 4 at a depth of 10-20 metres and 50-118 metres. Then on line 5 at a depth of 10-20 metres and 60-100 metres. Then on line 8 at a depth of 65-110 metres. Based on the results of 2.5D visualization, the aquifer distribution pattern in the study area shows a localized distribution.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | air tanah, akuifer, geolistik resistivitas, ADMT groundwater, aquifer, resistivity, ADMT |
| Subjects: | G Geography. Anthropology. Recreation > GB Physical geography > GB1003.2 Groundwater. T Technology > TN Mining engineering. Metallurgy > TN24 Aquifers T Technology > TN Mining engineering. Metallurgy > TN269 Prospecting--Geophysical methods |
| Divisions: | Faculty of Civil Engineering and Planning > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
| Depositing User: | Ahmad Syarifudin Alamsyah |
| Date Deposited: | 29 Jul 2025 02:59 |
| Last Modified: | 29 Jul 2025 02:59 |
| URI: | http://repository.its.ac.id/id/eprint/122429 |
Actions (login required)
 |
View Item |