Lesar, Zanetta Rachel Almiranda (2025) Estimasi Persebaran Air Lindi menggunakan Metode Magnetik di TPA Benowo. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Air lindi di TPA Benowo berpotensi mencemari lingkungan, sehingga perlu dilakukan pemetaan sebarannya. Penelitian ini bertujuan untuk menganalisis arah distribusi air lindi menggunakan metode magnetik sebagai pendekatan geofisika non-invasif yang efisien. Akuisisi data dilakukan pada 246 titik, kemudian dianalisis melalui koreksi harian, IGRF, kontinuasi ke atas, dan reduksi ke kutub (RTP). Hasilnya menunjukkan zona anomali magnetik menonjol di bagian utara dan barat TPA, dengan nilai RTP antara 3200 hingga 7200 nT. Analisis lanjutan dilakukan menggunakan transformasi gradien vertikal, sinyal analitik, dan gradien horizontal untuk mempertegas batas serta posisi sebaran anomali yang diduga merupakan lindi. Interpretasi kuantitatif menunjukkan keberadaan anomali berbentuk bola dan silinder horizontal pada kedalaman 11–29m. Respon magnetik ini mengindikasikan kemungkinan akumulasi air lindi yang mengandung logam berat. Temuan ini memberikan gambaran awal yang dapat menjadi dasar bagi interpretasi geofisika lanjutan di wilayah TPA Benowo.
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Leachate at the Benowo landfill has the potential to pollute the environment, so it is necessary to map its distribution. This study aims to analyze the direction of leachate distribution using magnetic methods as an efficient non-invasive geophysical approach. Data acquisition was conducted at 246 points, then analyzed through daily correction, IGRF, upward continuation, and reduction to the pole (RTP). The results show prominent magnetic anomaly zones in the northern and western parts of the landfill, with RTP values ranging from 3200 to 7200 nT. Further analysis was conducted using vertical gradient transformation, analytical signal, and horizontal gradient to clarify the boundaries and positions of the anomalies suspected to be leachate. Quantitative interpretation revealed the presence of spherical and horizontal cylindrical anomalies at depths of 11–29m. This magnetic response indicates the possible accumulation of leachate containing heavy metals. These findings provide an initial overview that can serve as a basis for further geophysical interpretation in the Benowo TPA area.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Air lindi, Anomali Magnetik, Logam Berat, Metode Magnetik, TPA Benowo Leachate, Magnetic Anomaly, Heavy Metals, Magnetic Method, Benowo Landfill |
| Subjects: | Q Science > QE Geology Q Science > QE Geology > QE1.F557 Magnetic anomalies--Measurement. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Zanetta Rachel Almiranda Lesar |
| Date Deposited: | 24 Jul 2025 09:24 |
| Last Modified: | 24 Jul 2025 09:24 |
| URI: | http://repository.its.ac.id/id/eprint/121354 |
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