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All Journal Jurnal Ilmiah Aplikasi Isotop Radiasi Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir

Satrio Satrio

Pusat Aplikasi Isotop dan Radiasi, BATAN

Author-ID : 2797521

Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Immunology & microbiology Materials Science & Nanotechnology Social Sciences

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Articles

Karakteristik Air Tanah Dangkal Kota Semarang Pada Musim Penghujan Berdasarkan Pendekatan Isotop Stabil (18O, 2H) dan Kimia Air Satrio Satrio; Hendarmawan Hendarmawan; M. Sapari Dwi Hadian; E. Ristin Pujiindiyati
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 11, No 1 (2015): Juni 2015
Publisher : BATAN

Pada bulan Maret 2014 telah dilakukan penelitian air tanah di wilayah Kota Semarang dengan tujuan untuk mengetahui karakteristik air tanah dangkal pada saat musim penghujan melalui pendekatan isotop stabil (18O, 2H) dan kimia air yang didukung dengan data hidrogeologi setempat. Sejumlah sampel air tanah dangkal diambil di beberapa lokasi dengan kedalaman antara 0 — 35 m di bawah permukaan tanah setempat (dbpts). Analisis isotop stabil 18O dan 2H serta kimia air dilakukan di laboratorium Hidrologi, Pusat Aplikasi Isotop dan Radiasi, BATAN Jakarta. Hasil analisis isotop stabil 18O dan 2H menunjukkan bahwa sekitar 63 % air tanah cenderung berada di dekat garis meteorik Semarang dan sekitar 37 % sisanya mengalami evaporasi, interaksi dengan oksida batuan dan sedikit pengaruh interaksi atau mixing dengan air laut. Dari hasil analisis kimia air dengan ionic balancesekitar 3 % menunjukkan bahwa pada saat musim penghujan akuifer air tanah dangkal di wilayah Kota Semarang didominasi oleh ion bikarbonat (HCO3-) dengan tipe air didominasi CaHCO3. Sedangkan dari data parameter Chloride Bicarbonate Ratio, sekitar 24 % air tanah dangkal di wilayah Kota Semarang terindikasi mengalami intrusi air laut dansisanya sekitar 76 % masih menunjukkan karakteristik sebagai air tanah tawar.Kata kunci : karakteristik air tanah, air tanah dangkal, Semarang, musim penghujan, isotopstabil dan kimia air

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

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

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

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

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

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

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 Barokah Aliyanta E. Ristin Pujiindiyati Evarista Ristin Pujiindiyati Hendarmawan Hendarmawan M. Sapari Dwi Hadian Paston Sidauruk Syafalni Syafalni Zainal Abidin

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