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Irwan Iskandar
Bandung Institute of Technology
GeomorphologyGeologyHydrologyAquiferGroundwater
18Publications
4H-index
34Citations
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Publications 20
Newest
#2Yohei Tada (Kyoto University)
Last. Irwan IskandarH-Index: 4
view all 5 authors...
Abstract Recharge mechanism and water–rock interaction (WRI) along the recharge flows in a transitional geothermal system that characterize the chemical and physical properties of vapor and liquid phases, has not yet been fully understood due to complexities of fluid origin and geologic structure. To clarify the fluid origin and WRI processes in the system, this study applied hydrogen and oxygen isotope, B, Cl, and rare alkali metals analyses by considering fractionation characteristics of 18O i...
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#1Yudi Rahayudin (Kyoto University)
#2Koki Kashiwaya (Kyoto University)H-Index: 6
Last. Niniek Rina Herdianita (ITB: Bandung Institute of Technology)H-Index: 2
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Abstract Volcano-hosted, vapor-dominated geothermal systems have great potential for power generation, although to date, such systems discovered globally remain limited in number. Understanding of the physical and chemical properties of geothermal fluids (water and gas) in vapor-dominated systems is critical for the sustainable development of geothermal resources. This study aims to clarify the origins, water–rock interactions, and chemical evolution of geothermal fluids during migration from a ...
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#1Ahmad Taufiq (Kumamoto University)H-Index: 1
#2Agus Jatnika Effendi (ITB: Bandung Institute of Technology)H-Index: 3
Last. Lambok M. Hutasoit (ITB: Bandung Institute of Technology)H-Index: 3
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Abstract Number of populations, industry, and economic activities in Indonesia are growing rapidly and these impacts on natural environments raise awareness about water quality issue over the country. Bandung Basin, one of the most growing rapidity urban areas in Indonesia, was assessed for NO 3 − contamination in groundwater systems, and its controlling factors and driving mechanisms were investigated with the aim to demonstrate novelty on the use of combination of parameters of stable isotope ...
7 CitationsSource
#1Ahmad Taufiq (ITB: Bandung Institute of Technology)H-Index: 1
#2Takahiro Hosono (Kumamoto University)H-Index: 20
Last. Lambok M. Hutasoit (ITB: Bandung Institute of Technology)H-Index: 3
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One crucial task in groundwater research and management is the estimation of groundwater mixing ratios. Here, estimations of mixing ratios are presented systematically and spatially for shallow and deep groundwater in some areas of excessive groundwater pumping with different magnitudes of groundwater drawdown. The mixing ratios are estimated using two methods: (1) the total mixing ratio using all parameters, and (2) the mixing ratio using nitrate concentrations. The values for the total mixing ...
1 CitationsSource
#1Lilik Eko Widodo (ITB: Bandung Institute of Technology)H-Index: 1
#2Tedy Agung CahyadiH-Index: 1
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High rainfall in equatorial regions leads to high groundwater levels or pore pressures and a high risk of landslides on the slopes of open pit mines, hindering mining operations. To lower the groundwater level surrounding a slope, a drainage system is needed. A drain hole is a part of a drainage system which utilises gravity to drain groundwater. Drain hole installation in fractured media requires the determination of the number, location, length and other parameters of the drain holes. Drain ho...
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#1Irwan IskandarH-Index: 4
Last. Sudarto NotosiswoyoH-Index: 3
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The Tampomas Volcano is a Quaternary volcano located on Java Island and controlled by a west-northwest–east-southeast (WNW-ESE) regional fault trend. This regional structure acts as conduits for the hydrothermal fluids to ascend from a deeper system toward the surface and, in the end, mix with groundwater. In this research, water geochemistry, gas chemistry and isotopes 2H, 18O and 13C were used to explore the subsurface fluid characteristics and mixing mechanisms of the hydrothermal fluids with...
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#1Ahmad Taufiq (Kumamoto University)H-Index: 1
#2Takahiro Hosono (Kumamoto University)H-Index: 20
Last. Jun Shimada (Kumamoto University)H-Index: 25
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In the Bandung basin, Indonesia, excessive groundwater pumping caused by rapid increases in industrialization and population growth has caused subsurface environmental problems, such as excessive groundwater drawdown and land subsidence. In this study, multiple hydrogeochemical techniques and numerical modeling have been applied to evaluate the recharge processes and groundwater age (rejuvenation). Although all the groundwater in the Bandung basin is recharged at the same elevation at the periph...
2 CitationsSource
#1Daniel Pramudita (ITB: Bandung Institute of Technology)
#2Irwan Iskandar (ITB: Bandung Institute of Technology)H-Index: 4
Last. Antonius Indarto (ITB: Bandung Institute of Technology)H-Index: 17
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Abstract In most sites, mining activities have led to the acidity, unstable microbial colonies, and nutrient depletion in the soil. Mine reclamation and rehabilitation become prominent for the extremely degraded soil to regain its economic value. Nanoparticles have been proved capable of rehabilitating ex-mining soil more effectively and efficiently by delivering interestingly new and noteworthy properties, which are mainly attributed to their structure and larger surface-to-volume ratio. In thi...
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#2Tedy Agung CahyadiH-Index: 1
Last. Irwan IskandarH-Index: 4
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#1Tedy Agung CahyadiH-Index: 1
#2Lilik Eko WidodoH-Index: 1
Last. SuyonoH-Index: 1
view all 5 authors...
1 CitationsSource
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