Analysis of aquifers, humidity levels with geoelectric resistivity value, and NDW Index in the geothermal area of North Langowan

Authors

  • Bella M. Wowor Program Studi Magister Teknik Sipil, Pascasarjana, Universitas Sam Ratulangi, Manado
  • Fabian J. Manoppo Fakultas Teknik, Universitas Sam Ratulangi, Manado
  • Herawaty Riogilang Fakultas Teknik, Universitas Sam Ratulangi, Manado

DOI:

https://doi.org/10.35800/jasm.v9i2.35523

Keywords:

geothermal, aquifer, geoelectrical resistivity, NDW index, North Langowan

Abstract

This research was conducted to examine the condition (location, depth, and thickness) of the aquifer, to assess the humidity level using the NDW index, and to determine the relationship between aquifer conditions and the sustainability of the geothermal system using the geoelectrical method of resistivity in the North Langowan geothermal area. The comparison between rock layer resistivity data and spectral values based on geological-hydrogeological maps was carried out to determine the relationship between aquifer conditions and humidity levels in the geothermal area to the continuity of the geothermal system in the Tompaso region. The data was processed using IP2WIN and ILWIS programs. The results showed that at the research site there were semi-confined aquifers and free aquifers, which were indicated by low resistivity values. It can be concluded that the aquifer in the North Langowan geothermal area was at a depth ranging from 0 m to 16 m with a thickness ranging from 3.98 to 12 m, moderate wetness, and has a good relationship in supporting the continuity of the Tompaso geothermal system.

Indonesian title: Analisis akuifer, tingkat kelembaban dengan nilai resistivitas geolistrik, dan Index NDW di daerah panas bumi Langowan Utara

 

References

ASMARANTO, R. (2012) Identifikasi Air Tanah menggunakan Metode Resistivity. Bahan Ajar Hidrogeologi. Malang: Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya.

FAUZIYAH, S., KHUMAEDI and LINUWIH, S. (2015) Interpretasi struktur bawah permukaan daerah mata air panas Krakal Kebumen dengan metode geolistrik. Jurnal MIPA, 38 (2), pp. 138-143.

GAO, B.-C. (1996) NDWI - a normalized difference water index for remote sensing of vegetation liquid water from space. Remote Sensing of Environtment, 58 (3), pp. 257-266.

HANDOKO, B.T. (2010) Resource Assessment of Tompaso Geothermal Field, Indonesia. Report 2010, Number 30. Iceland: United Nations University Geothermal Training Programme.

HAIKAL, T. and RISDIYANTO, I. (2014) Analisis Normalized Difference Wetness Index (NDWI) dengan menggunakan Data Citra Landsat 5 TM (Studi Kasus: Provinsi Jambi Path/Row:125/61). Undergraduate Theses. Bogor: Institut Pertanian Bogor.

HIRNAWAN, F. (2003) Hidrogeologi Air Tanah. Bandung: Universitas Padjadjaran.

IRAWAN, D. AND PURADIMAJA, D. (2012) Hidrogeologi Umum. Bandung: Fakultas Ilmu dan Teknologi Kebumian, ITB.

IRJAN (2012) Pemetaan potensi air-tanah (Aquifer) berdasarkan interpretasi data resistivitas Wenner Sounding (studi kasus: pengembangan Kampus II Universitas Negeri Maulana Malik Ibsrahim Malang di Desa Tlekung Kecamatan Junrejo Kota Batu). Jurnal Neutrino, 4 (2), pp. 201-212.

KARUNIANTO, A.J. (2013) Analisis kedalaman potensi akuifer air tanah dengan pemodelan distribusi tahanan jenis secara inversi 2-D Desa Kompas Raya, Nanga Pinoh, Melawi, Kalimantan Barat. Eksplorium, 34 (1), pp. 11-22.

LENNI (2008) Medan Elektromagnetik. Bahan Ajar: konduktor Arus, Hukum Ohm dan Efek Bayangan. Pusat Pengembangan Bahan Ajar. Jakarta: Universitas Mercu Buana.

LISTYANI, T.R.A. and BUDIADI, Ev. (2013) Tinjauan Hidrogeologi Sebagai Pendukung Potensi Panas Bumi Daerah Gedongsongo, Jawa Tengah. Jurnal Teknologi, 6 (1): pp. 65-72.

PRYAMBODO, D.G., KUSUMAH, G. and SUDIRMAN, N. (2014) Pendugaan Akuifer Airtanah di pesisir Pulau Solor, Nusa Tenggara Timur. Jurnal Segara, 10 (2), pp. 147-155.

RATNAWATI, S.U. (2009) Pendugaan Kedudukan Akuifer dengan Aplikasi Geolistrik Metode Tahanan Jenis Konfigurasi Schlumberger (Studi Kasus Desa Banioro dan Sekitarnya, Kecamatan Karangsambung, Kabupaten Kebumen Jawa Tengah). skripsi. Semarang: Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang.

SARDIYANTO (2010) Sistem Panas bumi Lapangan Tompaso Minahasa, Sulawesi Utara Tugas akhir B. Bandung: Program Studi Teknik Geologi, Fakultas Ilmu dan Teknologi Kebumian, Institut Teknologi Bandung.

TILLERY, B.W., ENGER, E.D. and ROSS, F.C. (2007) Integrated Science. Third Edition. New York: McGraw-Hill. 2007.

WIBOWO, N.B. (2015) Spatial analysis of surface aquifer thickness based frequency predominant in Bantul District. Indonesian Journal of Applied Physics, 5 (1), pp. 62-70.

WINARTI (2013) Metode geolistrik untuk mendeteksi akuifer airtanah di daerah sulit air (studi kasus di Kecamatan Takeran, Poncol dan Parang, Kabupaten Magetan). Angkasa, V (1), pp. 83-94.

Downloads

Published

2021-10-31

Issue

Section

Articles