PEMODELAN MUKA AIR TANAH MENGGUNAKAN DATA SUMUR GALI DAN DATA GEOLISTRIK DI WILAYAH PEMUKIMAN LABUAN BAJO

Shabrina Divania Ratulina, - and Hendro Murtianto, - and Totok Doyo Pamungkas, - (2025) PEMODELAN MUKA AIR TANAH MENGGUNAKAN DATA SUMUR GALI DAN DATA GEOLISTRIK DI WILAYAH PEMUKIMAN LABUAN BAJO. S1 thesis, Universitas Pendidikan Indonesia.

Abstract

Labuan Bajo merupakan kawasan semi-arid yang dapat mengalami periode tanpa hujan selama 7–8 bulan. Permintaan air bersih terus meningkat seiring pertumbuhan penduduk dan pengembangan wilayah, sehingga air tanah menjadi alternatif sumber daya air yang potensial. Penelitian ini bertujuan memetakan muka air tanah berdasarkan data sumur gali untuk mengetahui potensi sumber air baru. Data kedalaman muka air tanah dari sumur gali diolah menggunakan interpolasi Kriging dalam Sistem Informasi Geografis (SIG) guna memperoleh sebaran dan arah aliran muka air tanah. Hasil analisis menunjukkan elevasi muka air tanah berada pada rentang 4,61–94,11 mdpl dengan arah aliran dari tenggara ke barat laut mengikuti topografi. Analisis ini didukung metode geolistrik Vertical Electrical Sounding (VES) konfigurasi Schlumberger untuk memetakan kondisi bawah permukaan. Pemodelan geolistrik mengidentifikasi lima satuan batuan, yaitu top soil, tuf pasiran, batugamping tufan, batugamping konglomerat, dan batugamping. Potensi air tanah tinggi terdapat pada satuan tuf pasiran pada kedalaman 2–6 m dan 12–39 m di bawah permukaan. Uji korelasi Pearson antara elevasi muka air tanah hasil sumur gali dan estimasi geolistrik menunjukkan hubungan positif yang kuat dan signifikan. Hal ini membuktikan bahwa data sumur gali dapat memetakan kondisi muka air tanah di daerah penelitian dengan validasi dari pengukuran geolistrik Labuan Bajo is a semi-arid region that can experience 7–8 months without rainfall. The demand for clean water continues to increase along with population growth and regional development, making groundwater a potential alternative water resource. This study aims to map the groundwater table based on dug well data to identify potential new water sources. Groundwater table depth data from dug wells were processed using Kriging interpolation in a Geographic Information System (GIS) to obtain the distribution and flow direction of the groundwater table. The results show that the groundwater table elevation ranges from 4.61 to 94.11 meters above sea level, with flow direction from southeast to northwest, following the topography. The analysis was supported by the Vertical Electrical Sounding (VES) geoelectrical method with a Schlumberger configuration to map subsurface conditions. Geoelectrical modeling identified five lithological units: topsoil, sandy tuff, tuffaceous limestone, conglomeratic limestone, and limestone. High groundwater potential is found in the sandy tuff unit at depths of 2–6 m and 12–39 m below the surface. Pearson correlation analysis between groundwater table elevation from dug well data and geoelectrical estimation shows a strong and significant positive relationship. These findings indicate that dug well data can effectively map groundwater table conditions in the study area, supported by validation from geoelectrical measurements.

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Item Type:	Thesis (S1)
Additional Information:	https://scholar.google.com/citations?view_op=new_profile&hl=en ID SINTA Dosen Pembimbing Hendro Murtianto: 0015028107 Totok Doyo Pamungkas: 0415108302
Uncontrolled Keywords:	Muka Air Tanah, Geolistrik Schlumberger, Sumur Gali, Korelasi, Labuan Bajo Groundwater Table, Schlumberger Resistivity Method, Dug Wells, Correlation Analysis, Labuan Bajo
Subjects:	G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography G Geography. Anthropology. Recreation > GB Physical geography Q Science > QE Geology T Technology > TC Hydraulic engineering. Ocean engineering
Divisions:	Fakultas Pendidikan Ilmu Pengetahuan Sosial > Program Studi Survey Pemetaan dan Informasi Geografi D-4
Depositing User:	Shabrina Divania Ratulina
Date Deposited:	28 Oct 2025 03:49
Last Modified:	28 Oct 2025 03:49
URI:	http://repository.upi.edu/id/eprint/143321

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