Isotope studies and chemical investigations of hot springs from North-Eastern Algeria

Chenaker, Hichem; Houha, Belgacem; Vallès, Vincent

doi:10.26872/jmes.2017.8.12.448

Cited by 7 publications

(10 citation statements)

References 22 publications

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“…The aim of this current study is to determine the characteristics of hot springs and cold springs and asses its geothermal potential using isotopes and geochemistry data in the hydrogeological framework. The study utilized stable isotopes of water, i.e., 2 H and 18 O, to investigate the origin of fluids and its interaction with surrounding rocks [2][3], while 14 C radioisotope is used to determine groundwater age [4][5]. In addition, a fluid geochemistry approach is used to determine the characteristics and temperature of the reservoir [6].…”

Section: ■ Introductionmentioning

confidence: 99%

Isotope and Geochemistry Characterization of Hot Springs and Cold Springs of Sembalun – Rinjani Area, East Lombok, West Nusa Tenggara – Indonesia

Satrio¹,

Prasetio²,

Alam³

et al. 2020

Indones. J. Chem.

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The presence of several hot springs in Sembalun – Rinjani, East Lombok, West Nusa Tenggara is an indicator of geothermal potential in the area. This study aims to determine the characteristics of hot springs and cold springs and also the geothermal potential in Sembalun – Rinjani area using isotopes and geochemistry methods. The result of d18O and d2H stable isotopes analysis shows that most of the hot springs are meteoric water. Except for Kalak hot spring, other hot springs are a mixing product of meteoric water and andesitic water, with meteoric water composition between 64 to 87%. While 14C radioisotope suggests that the age of hot springs in the Sembalun area is about 10,000–12,000 years BP, the surrounding cold springs are mostly Modern except Jorong cold spring. The results of gas analysis (He, Ar, and Ne) also suggest the same origin of geothermal fluid, i.e., meteoric water origin. Based on chemical composition, Kalak hot spring is plotted as sulfate type water, while Sebau hot spring is plotted near mature water composition but not representing reservoir fluid due to its relatively low temperature and high Mg content. Na/K geothermometer calculation from Sembalun area shows that subsurface temperature is varied between 111-161 °C, while from Rinjani hot springs indicates higher subsurface temperature, i.e., 250-260 °C. It is estimated that reservoir fluid has high TDS with chloride content up to 4000 mg/L.

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Section: ■ Introductionmentioning

confidence: 99%

Isotope and Geochemistry Characterization of Hot Springs and Cold Springs of Sembalun – Rinjani Area, East Lombok, West Nusa Tenggara – Indonesia

Satrio¹,

Prasetio²,

Alam³

et al. 2020

Indones. J. Chem.

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“…The temporal evolution of groundwater salinity of the Plio-Quaternary aquifer shows an upward trend going from year to year and consequently deterioration in the groundwater quality. As for the Turonian aquifer, the minimum values of salinity are around 0.8 g/l and the maximum values are around 1.3 g/l with an average of 1.1 g/l, and this for , 2015, 2017). The temporal evolution of the groundwater salinity of this aquifer does not show a signi cant trend, this could be explained by its signi cant depth and its captive nature.…”

Section: Evolution Of Groundwater Salinitymentioning

confidence: 81%

“…The main source of nitrate in water is the leaching of nitrogenous products in the soil following the decomposition of organic matter or synthetic and/or natural fertilizers. The nitrate content of unpolluted natural waters is highly variable, varying from 1 to 15 mg/l depending on the season and the origin (Chenaker et al 2017).…”

Section: Nitrates Contaminationmentioning

confidence: 99%

Quantitative and Qualitative Assessment of Groundwater from Semi-Arid Zones in the Context of Climate Change, Example of Essaouira Region, Morocco

Bahir¹,

Ouhamdouch²,

Ouazar³

et al. 2020

Preprint

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This study aims to assess the effect of climate change on water resources in semi-arid environments, taking the Essaouira region as an example. Analysis of climate data shows a downward trend in precipitation of 12 to 16% and an increase in air temperature of 2.3 °C over the past three decades. The piezometric study shows a continuous drop in the piezometric level which exceeds 12 m for the Cenomanian-Turonian aquifer, 17 m for the Plio-Quaternary aquifer, around 8 m for the Barremian-Aptian aquifer and 5 m for the Hauterivian. Hydrogeochemical analysis shows that (i) the groundwater mineralization is controlled by the dissolution of evaporitic and carbonates minerals, by the reverse ions exchange phenomenon, and by the marine intrusion, especially at Plio-Quaternary aquifer; (ii) the groundwater quality in the study area deteriorates gradually over time and space. The isotopic technique shows that (i) the groundwater recharge in the study area is ensured by precipitation of oceanic origin without significant evaporation and that (ii) climate change has no remarkable effect on the isotopic content of the groundwater of the study area. However, the results of this article reflect that the Essaouira basin is very vulnerable to climate change.

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“…Based on this consideration, it is necessary to re-assess the hydrochemical and isotopes characteristics of several springs in Sembalun -Rinjani area to infer the effect of earthquake events on hydrochemical characteristics. The approach of this study is using stable isotope (δ 18 O, δ 2 H) and hydrochemical method to infer the origin of cold and hot springs, water-rock interaction (Mwangi, 2013;Chenaker et al, 2017) and sub-surface temperature (Hou et al, 2018). Study on groundwater characteristics related to earthquake events has been carried out by several researchers before, such as Malakootian & Nouri (2010), Hosono et al (2018) and Cox et al (2015).…”

Section: Introductionmentioning

confidence: 99%

Comparison Of Isotope And Hydrochemical Characteristics Of Springs In Sembalun – Rinjani Area, East Lombok, West Nusa Tenggara, Indonesia Before And After The Earthquake Events In 2018

Satrio¹,

Prasetio²,

Alam³

et al. 2021

BGSM

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The current 2019 isotope and hydrochemical study of hot and cold springs in Sembalun - Rinjani area is a re-assessment of previous similar study in 2012. The aim of this study is to assess the isotope and hydrochemical characteristics of springs due to the earthquake events in 2018. After the earthquake events in 2018, the stable isotopes δ18O and δ2H composition of Sebau hot spring and most of cold springs is shifted into more depleted values which may indicate water-rock interaction or interaction with cold waters which has more depleted δ18O and δ2H values. Also, Sebau hot spring is still plotted at mixing line of meteoric and andesitic water, but still dominant meteoric water. The hydrochemical data of all cold springs and Orok river show the enrichment of Na, probably from silicates weathering or the cation exhchange. While hydrochemical composition of Sebau hot spring is significantly decreased, except SO4, probably due to dilution with cold waters before the thermal water reach the surface. The Piper diagram showed that cold springs and Orok river are Ca-Mg-HCO3 type before and after the earthquake events. While Sebau hot spring is shifted from Ca-Cl type into mixed Ca-Mg-Cl type after the earthquake events. The temperature of Sebau hot spring slightly decreased from 35.5 °C to 34.8 °C after the earthquake events, while Na/K geothermometer calculation also indicate decreasing of sub-surface temperature, i.e. from 146–165 °C to 130–150 °C.

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Isotope studies and chemical investigations of hot springs from North-Eastern Algeria

Cited by 7 publications

References 22 publications

Isotope and Geochemistry Characterization of Hot Springs and Cold Springs of Sembalun – Rinjani Area, East Lombok, West Nusa Tenggara – Indonesia

Isotope and Geochemistry Characterization of Hot Springs and Cold Springs of Sembalun – Rinjani Area, East Lombok, West Nusa Tenggara – Indonesia

Quantitative and Qualitative Assessment of Groundwater from Semi-Arid Zones in the Context of Climate Change, Example of Essaouira Region, Morocco

Comparison Of Isotope And Hydrochemical Characteristics Of Springs In Sembalun – Rinjani Area, East Lombok, West Nusa Tenggara, Indonesia Before And After The Earthquake Events In 2018

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