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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Geosaintek
Purwanto, M. Singgih
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics

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Penentuan Daerah Imbuhan Dengan Metode Analisa Isotop Air Tanah Di Desa Curah Cottok, Kec. Kapongan Kabupaten Situbondo Fajar, M. Haris Miftakhul; Utama, Widya; Mariyanto, Mariyanto; Akbar, Firman Syaifuddin; Hilyah, Anik; Rochman, Juan Pandu Gya Nur; Purwanto, M. Singgih
Jurnal Geosaintek Vol. 5 No. 1 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

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Abstract

Di lokasi penelitian, Desa Curah Cottok Kec. Kepongan Kabupaten Sitobondo, memiliki karakteristik morfologi yang unik., yaitu perbukitan memanjang arah barat-timur (elevasi 25-500 mdpl)dengan dibatasi oleh dataran rendah disebelah utara (elevasi 0-25 mdpl) dan selatannya (elevasi 50-200 mdpl). Dataran rendah disebelah utara perbukitan memiliki beberapa mata air dan sumur artesis dengan debit 1-7 L/s. Dengan topografi yang unik tersebut, terdapat 3 zona yang memungkinkan berperan sebagai daerah imbuhan dari mata air dan smur artesis, yaitu zona 1 berupa daerah Perbukitan Curah Cottok, zona 2 berupa dataran di sebelah selatan Perbukitan Curah Cottok dan zona 3 berupa lereng utara Gunung Ijen. Untuk memastikan lokasi daerah imbuhan, dilakukan dengan menggunaakan analisa isotop, yaitu dengan isotop 2H dan 18O. Selain penentuan lokasi daerah imbuhan, analisa isotop air tanah juga dapat digunakan untuk melakukan analisa umur air (water dating), yaitu dengan menggunakan analisa isotop 3H.
Analysis of Formation Ronggojalu Spring and Probolinggo Active Fault Continuity with Satellite Data Gravity Method Rafi, M. Erfand Dzulfiqar; Fajar, M. Haris Miftakhul; Purwanto, M. Singgih; Hilyah, Anik; Bahri, Ayi Syaeful; Rahayu, Helda Kusuma
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.3399

Abstract

The Ronggojalu spring, with a discharge intensity of more than 3,000L/second, makes it one of the spring with the most significant discharge in Indonesia and is the main supplier of clean water for the City of Probolinggo. From the observation of topographic maps, the existence of this spring forms a lineament with Paras Spring and Sumber Kramat with a direction of Northeast to Southwest. The presence of this lineament can indicate the existence of geological structures that play a role in the formation of spring. In addition, this lineament is in the same direction as the active Probolinggo fault identified by PUSGEN (Pusat Studi Gempa Nasional). This study aims to identify the presence of geological structures in the lineament using satellite gravity data GGMplus (Global Gravity Model) and Remote Sensing. This data is quite efficient and effective in identifying subsurface geological structures. With the SVD (Second Vertical Derivative) analysis, the residual anomaly results from the second derivative value of the Bouger anomaly so that it can show the density contrast value as an indication of the geological structure. From the results of the interpolation of satellite gravity data in the study area, the CBA (Complete Bouguer Anomaly) value range is -16.8 – 4.8 mGal. The analysis of SVD and FHD shows a significant contrast different values along the fault line that passes through the spring. The lineament density processing also shows a weak zone around the fault zone, indicating the continuity in that zone. The existence of a fault under this spring indicates the influence of the fault on the formation of Ronggojalu Spring, Paras Spring, and Keramat Spring. In addition, it is estimated that this fault is a continuation of the active Probolinggo fault.
Co-Authors Akbar, Firman Syaifuddin Bahri, Ayi Syaeful Fajar, M. Haris Miftakhul Hilyah, Anik Juan Pandu Gya Nur Rochman Mariyanto Mariyanto Rafi, M. Erfand Dzulfiqar Rahayu, Helda Kusuma Widya Utama