Achsov, Alfiana Islami Achsov (2006) Identifikasi Persebaran Residu Air Lindi Pada Kawasan Alih Fungsi TPA Keputih Sukolilo Surabaya Menggunakan Metode Electrical Resistivity Tomography (ERT) 2D Konfigurasi Wenner Schlumberger. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tempat Pemrosesan Akhir (TPA) Keputih, Surabaya, telah dialihfungsikan menjadi kawasan Hutan Bambu sejak tahun 2001. Meskipun demikian, proses dekomposisi sampah
yang telah berlangsung lama masih berpotensi menghasilkan air lindi yang dapat mencemari lingkungan bawah permukaan. Penelitian ini bertujuan untuk memetakan distribusi nilai resistivitas bawah permukaan dan mengidentifikasi sebaran air lindi menggunakan metode Electrical Resistivity Tomography (ERT) dua dimensi dengan konfigurasi Wenner Schlumberger. Pengukuran dilakukan pada enam lintasan sepanjang 80–100 m dengan spasi elektroda 5 m. Data resistivitas semu diolah menggunakan perangkat lunak RES2DINV melalui proses inversi least-squares. Hasil inversi menunjukkan nilai resistivitas bawah permukaan berkisar antara 0,95–482 Ωm yang mengindikasikan kondisi litologi yang heterogen. Zona resistivitas rendah (<10–15 Ωm) yang diinterpretasikan sebagai indikasi keberadaan air lindi teridentifikasi dominan pada Lintasan 1, 2, dan 3. Lintasan 4 dan 6 didominasi material dengan resistivitas lebih tinggi, sedangkan anomali pada Lintasan 5 dipengaruhi oleh sedimen tambak yang jenuh air. Secara umum, pola sebaran lindi mengikuti kondisi topografi dan arah aliran air tanah. Penelitian ini menunjukkan bahwa metode ERT dua dimensi efektif untuk mengidentifikasi sebaran air lindi secara non-destruktif pada kawasan bekas TPA serta memberikan informasi bawah permukaan yang bermanfaat untuk evaluasi dan pengelolaan lingkungan secara berkelanjutan.
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The Keputih Landfill in Surabaya has been converted into the Bamboo Forest area since 2001. However, long-term waste decomposition may still generate leachate that can migrate through the subsurface and potentially contaminate the surrounding environment. This study aims to map the subsurface resistivity distribution and identify leachate using the two dimensional Electrical Resistivity Tomography (ERT) method with the Wenner-Schlumberger array. Measurements were conducted along six survey lines with lengths of 80–100 m and an electrode spacing of 5 m. The apparent resistivity data were processed using RES2DINV software through a least-squares inversion approach. The inversion results show subsurface resistivity values ranging from 0.95 to 482 Ωm, indicating heterogeneous subsurface conditions. Low-resistivity zones (<10–15 Ωm), interpreted as leachate, were predominantly identified along Survey Lines 1, 2, and 3. Survey Lines 4 and 6 were dominated by higher-resistivity materials, while the anomaly on Survey Line 5 was influenced by water-saturated pond sediments. Overall, the leachate distribution tends to follow the local topographic gradient and groundwater flow direction. These results demonstrate that the 2D ERT method is an effective non-destructive technique for identifying leachate distribution in former landfill areas and provides valuable subsurface information for environmental assessment and sustainable management.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Air lindi, Electrical Resistivity Tomography, Wenner-Schlumberger, RES2DINV, TPA Keputih. Leachate, Electrical Resistivity Tomography, Wenner-Schlumberger, RES2DINV, Keputih Landfill. |
| Subjects: | Q Science > QC Physics > QC610.3 Electric conductivity Q Science > QE Geology > QE471 Sedimentary rocks. Sedimentology |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Alfiana Islami Achsov |
| Date Deposited: | 05 Aug 2026 01:00 |
| Last Modified: | 05 Aug 2026 01:00 |
| URI: | http://repository.its.ac.id/id/eprint/143750 |
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