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All Journal Jurnal Ilmiah Aplikasi Isotop Radiasi Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Paston Sidauruk
Pusat Aplikasi Isotop dan Radiasi, BATAN
Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Immunology & microbiology Materials Science & Nanotechnology Social Sciences

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Studi Karakteristik Air Tanah Dangkal Sekitar TPA Bantar Gebang, Bekasi, dengan Metode Sumur Tunggal dan Ganda Satrio Satrio; Syafalni Syafalni; Paston Sidauruk
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 10, No 1 (2014): Juni 2014
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (470.791 KB) | DOI: 10.17146/jair.2014.10.1.2728

Abstract

Teknik perunut radioaktif dengan menggunakan metode sumur tunggal dan ganda untuk menentukan karakteristik  akuifer air tanah dangkal telah dilakukan di tiga desa sekitar tempat pembuangan akhir (TPA) Bantar Gebang, Bekasi. Penentuan arah dan kecepatan filtrasi dilaksanakan dengan metode sumur tunggal, dan parameter akuifer lainnya dilaksanakan dengan metode sumur ganda. Aplikasi kedua metode dapat dipakai untuk mengevaluasi arah gerakan dan kecepatan air tanah serta parameter lain yang akan memberikan informasi yang bermanfaat terhadap manajemen sumberdaya air tanah dan lingkungan. Hasil yang didapatkan menunjukkan bahwa pada musim hujan air tanah dangkal di daerah TPA bergerak ke sekeliling lokasi, sedangkan pada musim kemarau bergerak dari TPA pada desa Ciketing Udik dan untuk desa Sumur Batu dan Cikiwul dipengaruhi oleh kondisi hidrologi dan topografi lokasi. Hasil dari parameter lainnya memperlihatkan bahwa desa Ciketing Udik adalah daerah yang mempunyai potensi sumberdaya air tanah dangkal yang lebih baik dibandingkan dengan desa di sebelah utara TPA.Kata kunci: Perunut Radioaktif, Karakteristik Akuifer, Sumberdaya Air Tanah
Studi Daerah Imbuh Sistem Air Sungai Bawah Tanah Gunungkidul–Yogyakarta Menggunakan Isotop Stabil δ18O dan δ2H Satrio Satrio; Paston Sidauruk
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 11, No 2 (2015): Desember 2015
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.97 KB) | DOI: 10.17146/jair.2015.11.2.2986

Abstract

Studi Daerah Imbuh Sistem Air Sungai Bawah Tanah Gunungkidul–Yogyakarta Menggunakan Isotop Stabil δ18O dan δ2H. Penelitian air tanah di daerah Gunungkidul, Yogyakarta telah dilakukan menggunakan isotop stabil δ18O dan δ2H. Secara geologi daerah penelitian berada di daerah karst yang didominasi oleh batu gamping (limestone) berupa batuan karbonat dalam bentuk senyawa CaCO3. Penelitian ini dilakukan dengan menempatkan sebanyak lima alat curah hujan di lima lokasi dengan elevasi yang berbeda-beda. Sejumlah sampel air sungai bawah tanah, mata air dan air permukaan diambil untuk dianalisis konsentrasi isotop stabil δ18O dan δ2H. Penelitian ini bertujuan mengetahui daerah resapan atau daerah imbuh (recharge area) system air sungai bawah tanah di daerah Gunungkidul melalui pendekatan isotop stabil δ18O dan δ2H. Diharapkan penelitian ini dapat berperan dalam membantu kelestarian air tanah di daerah daerah Gunungkidul secara berkelanjutan. Berdasarkan hasil analisis isotop stabil δ18O dan δ2H air hujan diperoleh persamaan garis meteorik lokal untuk daerah Gunungkidul dengan persamaan: δ2H = 7,978 δ18O + 8,423 yang dapat dijadian acuan dalam penelitian air tanah selanjutnya di daerah Gunungkidul dan sekitarnya. Sedangkan dari hasil analisis kandungan isotop stabil δ18O dan δ2H diperoleh data bahwa elevasi daerah imbuh system air sungai bawah tanah daerah Gunungkidul berkisar antara 200 – 500 m di atas permukaan laut dengan perkiraan daerah imbuh di zone Baturagung yang merupakan daerah pegunungan dengan batuan induk vulkanik dan sedimen tufan serta memiliki elevasi antara 200 – 700 m di atas permukaan laut.Kata Kunci : Gunungkidul, daerah imbuh, isotop stabil, daerah karst, sungai bawah tanah
Study of Susceptibility of Pari Island Groundwater – To Surface Water Using Natural Isotopes and Hydrochemicals E. Ristin Pujiindiyati; Paston Sidauruk; Satrio Satrio; Agustin Rustam
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 10, No 2 (2014): Desember 2014
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jair.2014.10.2.2721

Abstract

The Pari Island with a total area of 40,32 ha is situated at the southern end of a chain of more than a hundred islands, commonly known as Seribu Islands, in Java Sea.  Its topography is flat land and mainly consists of coral reefs such that fresh water supply for local people is very limited. The scarcity of fresh water to the local people  is still worsen by the intrusion of sea water to the aquifer system. The objective of this study is to get a better understanding of mixing process between sea water and ground water and to trace the sources of salinity in shallow groundwater of Pari Island. The combinations of natural isotopes of 18O and 2H in water and hydrochemical (such as Na+, K+, Ca2+, Mg2+, Cl-, SO42- and HCO3-) content were used in this study. Results of hydrochemicals showed that almost all of the shallow groundwaters of Pari island had undergone mixing process with sea water. Mostly, they were classified as brackish water and gradually changed to saline water along the flowpath of the water. Only two groundwater samples were still characterized as fresh water type. Mixing ratios of seawater-groundwater water were estimated to be between 2% and 38%. Isotopic results of 18O and 2H revealed that slope of groundwater samples had decreased compared to local water meteoric line. Obviously, those distributions a long the mixing line of sea water – rain water, indicated that high salinity of groundwaters in Pari Island  originated from encroachment of sea water. It implied that the salinity was caused by flushing of minerals into soil by direct precipitation could not be taken into consideration. Key words: Pari Island, groundwater, sea water intrusion, natural isotopes, hydrochemicals
Subsurface Flow and Surface Water Interactions Quantification in Gunung Kidul Karst Area Using Hydro- Chemical and Stable Isotopes Data Variations Paston Sidauruk; E. Ristin Pujiindiyati; Satrio Satrio
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 11, No 1 (2015): Juni 2015
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jair.2015.11.1.2700

Abstract

Subsurface flow is one of the available water sources in the Karsts area such as in GunungKidul. The study of the pattern of the variations of stable isotopes content as a function oftime and its interaction with other water sources such as rain waters, groundwater, riverwater will be a very good tool to assess the potential of the subsurface flow as a water source.For this purpose, the variations of stable isotopes content of subsurface flow around GunungKidul Karsts area and its interactions with other local water sources have been studied for thelast two years. From the comparison of stable isotopes variations pattern of the subsurfaceflow with monthly rain water, the interaction of the subsurface flow with other water sourcesin the area has been quantified. Based on hydro-chemical data, it was found that the rechargearea of subsurface flow were relatively further than other samples and it was also found thatSeropan and Bribin subsurface flow systems originate from different geologic structures.Based on stable isotopes relative contents, it was found Ngobaran and Baron Caves have beenmixed with domestic sewerage water or other surface water.Keywords : Karsts area, stable isotopes, subsurface flow
Mempelajari Hubungan Air di Danau Toba dengan Air di Beberapa Sumber Mata Air Dekat Danau Toba Bungkus Pratikno; Paston Sidauruk
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 11, No 2 (2015): Desember 2015
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.956 KB) | DOI: 10.17146/jair.2015.11.2.2798

Abstract

Telah dilakukan penelitian komposisi rasio isotop dari beberapa sumber-sumber mata air yang berada di sekitar danau Toba dan air danau Toba. Sumber mataair keluaran di sekitar Danau Toba diindikasikan berasal dari air danau Toba, hal ini didasari dari pendapat masyarakat pada umumnya yang tinggal di Pematang Siantar-Sumatera Utara, oleh karena itu perlu dilakukan penelitian untuk membuktikan pendapat masyarakat tersebut. Penelitian bertujuan untuk mengetahui asal-usul sumber-sumber mata air dan hubungannya dengan air danau Toba  berdasarkan karakteristik isotop stabil yang dikandungnya.  Sebanyak 20 ml contoh air diambil dari beberapa sumber mata air dan air danau Toba untuk dianalisis komposisi rasio isotop  18O dan isotop deuterium yang terkandung didalamnya.  Analisis menggunakan alat pengukur komposisi rasio isotop Liquid Water Isotope Analyzer (LWIA) model DLT-100 buatan Los Gatos Research (LGR). Berdasarkan hasil investigasi, diketahui bahwa mata air Panahatan, Manigom, Balata, Mualgoit dan Bahtio yang terletak di sekitar danau Toba, tidak memiliki hubungan dengan air danau dan tidak berasal dari air danau Toba. Indikasi ini dapat dilihat dari hasil analisis d18O dan dD dari mataair yang diteliti memiliki nilai lebih negatif atau lebih depleted dibandingkan dengan air danau Toba. Kata Kunci : Danau Toba, Isotop Alam, Oksigen-18, Deuterium
Upstream Hydraulic Interconnection Study of Gunungkidul Karst Area Underground Rivers Paston Sidauruk; Satrio Satrio; Evarista Ristin Pujiindiyati; Barokah Aliyanta
EKSPLORIUM Vol 38, No 2 (2017): November 2017
Publisher : Pusat Teknologi Bahan Galian Nuklir - BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (739.332 KB) | DOI: 10.17146/eksplorium.2017.38.2.3715

Abstract

Hydraulic interconnection of Jomblangan (Petung) cave with other caves and water discharges in Gunungkidul karst area has been investigated using tracer techniques and verified by stable isotopes and hydrochemical data interpretation. Many studies have been conducted to study the interconnections of underground rivers around Gunungkidul Karst area, most of them, however, focused on the interconnection of underground rivers around Bribin and Seropan caves. This is because of the development of micro hydro turbines to lift the water from underground river were still focused around Bribin and Seropan caves. Petung, located to the north of Bribin and Seropan caves, was believed to be one of the cave at the upstream of Bribin and Seropan caves, however, there is no evidence yet of the hydraulic interconnection between Petung cave with either Bribin or Seropan caves. The results of tracer technique at the current study, showed that there was no hydraulic interconnection between Petung cave with either Bribin and Seropan caves.  On the other hand, the study showed an indication of a direct flow from Petung cave to Sriti and Beton springs. The travel times from Petung to Sriti and Beton springs were found to be around 2 and 10 hours, respectively. This finding is also in agreement with the results of chemical and stable isotopes analysis.
Co-Authors Agustin Rustam Alip Alip Barokah Aliyanta Bungkus Pratikno E. Ristin Pujiindiyati Evarista Ristin Pujiindiyati Satrio Satrio Syafalni Syafalni