IDENTIFIKASI STRUKTUR BAWAH PERMUKAAN DAN POTENSI AIR TANAH MENGGUNAKAN GEOLISTRIK SCHLUMBERGER DI NIMBOKRANG KABUPATEN JAYAPURA

Authors

  • Ficha Puspita Sari Universitas Cenderawasih
  • Steven Y. Y. Mantiri Universitas Cenderawasih
  • Tatang Sutarman Universitas Cenderawasih
  • Nelly Lunga Universitas Cenderawasih

DOI:

https://doi.org/10.31605/phy.v8i2.7017

Keywords:

Air Tanah, Geolistrik, Resistivitas, Schlumberger, Nimbokrang

Abstract

Ketersediaan air tanah penting bagi masyarakat Kampung Nimbokrang, Kabupaten Jayapura, terutama ketika kualitas air permukaan menurun dan debit sumur berkurang pada musim kemarau. Penelitian ini bertujuan mengidentifikasi struktur lapisan bawah permukaan berdasarkan resistivitas serta menentukan letak, kedalaman, dan ketebalan lapisan yang berpotensi mengandung air tanah. Pengukuran dilakukan dengan metode geolistrik resistivitas konfigurasi Schlumberger secara vertikal pada enam titik, masing-masing dengan bentangan 600 m. Beda potensial dan arus diukur menggunakan Resistivity Meter HV500 AK, kemudian resistivitas semu diinversi menggunakan IPI2Win dan diinterpretasikan dengan mempertimbangkan litologi serta geologi lokal. Hasil menunjukkan struktur bawah permukaan yang heterogen berupa tanah lunak pasiran, tanah lanau, material campuran, dan batuan gamping. Zona potensial air tanah diidentifikasi pada titik 2, 3, 4, dan 5. Titik 3 memiliki interval prospektif tertebal, yaitu 47,20 m pada kedalaman 23,30-70,50 m dengan resistivitas 2,90 Ωm. Hasil ini menunjukkan bahwa survei Schlumberger efektif sebagai pendekatan awal untuk menentukan target eksplorasi air tanah di Nimbokrang, tetapi verifikasi hidrogeologi dan pemboran tetap diperlukan.

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Published

2026-04-30