Identifikasi Letak Akuifer Di Morfolofgi Karst Dengan Metode Geolistrik Di Kabupaten Sumba Tengah, Nusa Tenggara Timur.

Wardhana, Gilang Pramata (2022) Identifikasi Letak Akuifer Di Morfolofgi Karst Dengan Metode Geolistrik Di Kabupaten Sumba Tengah, Nusa Tenggara Timur. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kurangnya ketersediaan air masih menjadi masalah utama di Pulau Sumba, Nusa Tenggara Timur. Lokasi yang sering terdampak kekurangan air berada di Kabupaten Sumba Tengah. Pada tahun 2014, telah dilakukan pemetaan hidrogeologi oleh Kementerian PUPR (Pekerjaan Umum dan Penataan Ruang) di kawasan Pulau Sumba, Nusa Tenggara Timur, akan tetapi kajian hidrogeologi masih kurang detail dan merata. Dilakukan penelitian lanjutan mengenai sistem hidrogeologi di morfologi karst Kabupaten Sumba Tengah, Nusa Tenggara Timur dengan tujuan mengidentifikasi keberadaan akuifer dan memodelkan persebarannya. Lokasi penelitian berada di Formasi Kananggar dan Formasi Waikabubak yang tersebar di 3 bagian wilayah. Penelitian menggunakan geolistrik satu dimensi konfigurasi Schlumberger yang dilakukan di 28 titik pengukuran dengan panjang lintasan 400 meter. Lokasi penelitian berada di daerah perbukitan karst, pemukiman, dan dekat dengan sumber mata air di elevasi sekitar 410 - 470 m dengan kedalaman hingga 100 meter. Hasil dari penelitian menunjukan bahwa morfologi karst berada di elevasi sekitar 390 hingga 500 mdpl di bagian tengah Kabupaten Sumba Tengah. Akuifer yang berada di morfologi karst memiliki nilai resistivitas antara 60-100 Ωm (Kuswanto, 2005 dan Torrase, 2019). Akuifer di daerah penelitian memiliki kedalaman hingga sekitar 30 meter dan beberapa lokasi memiliki akuifer yang cukup dangkal dengan kedalaman sekitae 1 - 14 meter. Rekomendasi lokasi bor dilakukan dengan analisa peta topografi, peta aliran sungai, dan analisa data. Lokasi bor berjumlah 11 titik yang tersebar di lokasi penelitian.
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Lack of water availability is still a major problem on Sumba Island, East Nusa Tenggara. Locations that are often affected by water shortages are in Central Sumba Regency. In 2014, a hydrogeological mapping was carried out by the Ministry of PUPR (Public Works and Spatial Planning) in the Sumba Island area, East Nusa Tenggara, but the hydrogeological study was still lacking in detail and evenly. Further research was conducted on the hydrogeological system in the karst morphology of Central Sumba Regency, East Nusa Tenggara to identify the presence of aquifers and model their distribution. The research location is in the Kananggar Formation and the Waikabubak Formation which are spread over 3 parts of the region. The study used a one-dimensional geoelectric Schlumberger configuration carried out at 28 measurement points with a track length of 400 meters. The research location is in karst hills, residential areas, and close to springs at an elevation of about 410 - 470 m with a depth of up to 100 meters. The results of the study show that the karst morphology is at an elevation of about 390 to 500 meters above sea level in the central part of the Central Sumba Regency. Aquifers in karst morphology have resistivity values between 60-100 m (Kuswanto, 2005 and Torrase, 2019). The aquifers in the study area have a depth of up to about 30 meters and some locations have quite shallow aquifers with a depth of about 1 - 14 meters. Recommendations for drill locations are carried out by analyzing topographic maps, river flow maps, and data analysis. There are 11 drill locations spread over the research location.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Akuifer, Bor, Geolistrik, Karst dan Schlumberger. Aquifer, Bor, Geo-electrical, Karst, and Schlumberger.
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	21 May 2026 07:13
Last Modified:	21 May 2026 07:13
URI:	http://repository.its.ac.id/id/eprint/133315

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