Liquid-vapor fractionation of oxygen and hydrogen isotopes of water from the freezing to the critical temperature

Horita, Juske; Wesolowski, David J.

doi:10.1016/0016-7037(94)90096-5

Cited by 777 publications

(594 citation statements)

References 17 publications

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“…The liquid-vapor fractionation factor is indeed dependent on temperature (Horita and Wesolowski, 1994). Thus, those waters with a relatively strong 18 O-and 2 H-shift (O1, V1, RC1-RC3, A1, A2, and MP1-MP3) were possibly affected by steam loss at higher temperatures with respect to those approaching LMWL (CP1, CP2, and Q1-Q5).…”

Section: Processes Controlling the Chemistry Of Watersmentioning

confidence: 97%

Fluid geochemistry of a deep-seated geothermal resource in the Puna plateau (Jujuy Province, Argentina)

Arnold

Cabassi

Tassi

et al. 2017

Journal of Volcanology and Geothermal Research

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This study focused on the geochemical and isotopic features of thermal fluids discharged from five zones located in the high altitude Puna plateau (Jujuy Province between S 22°20′-23°20′ and W 66°-67°), i.e. Granada, Vilama, Pairique, Coranzulí and Olaroz. Partially mature waters with a Na + -Cl − composition were recognized in all the investigated zones, suggesting that a deep hydrothermal reservoir hosted within the Paleozoic crystalline basement represents the main hydrothermal fluid source. The hydrothermal reservoirs are mainly recharged by meteoric water, although based on the δ 18 O-H 2 O and δD-H 2 O values, some contribution of andesitic water cannot be completely ruled out. Regional S-oriented faulting systems, which generated a horst and graben tectonics, and NE-, NW-and WE-oriented transverse structures, likely act as preferentially uprising pathways for the deep-originated fluids, as also supported by the Rc/Ra values (up to 1.39) indicating the occurrence of significant amounts of mantle He (up to 16%). Carbon dioxide, the most abundant compound in the gas phase associated with the thermal waters, mostly originated from a crustal source, although the occurrence of CO 2 from a mantle source, contaminated by organic-rich material due to the subduction process, is also possible. Relatively small and cold Na + -HCO 3 − -type aquifers were produced by the interaction between meteoric water and Cretaceous, Palaeogene to Miocene sediments. Dissolution of evaporitic surficial deposits strongly affected the chemistry of the thermal springs in the peripheral zones of the study area. Geothermometry in the Na-K-Ca-Mg system suggested equilibrium temperatures up to 200°C for the deep aquifer, whereas lower temperatures (from 105 to 155°C) were inferred by applying the H 2 geothermometer, likely due to re-equilibrium processes during the thermal fluid uprising within relatively shallow Na-HCO 3 aquifers. The great depth of the geothermal resource (possibly N 5000 m b.g.l.) is likely preventing further studies aimed to evaluate possible exploitation, although the occurrence of Liand Ba-rich deposits associated may attract financial investments, giving a pulse for the development of this remote region.

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Section: Processes Controlling the Chemistry Of Watersmentioning

confidence: 97%

Fluid geochemistry of a deep-seated geothermal resource in the Puna plateau (Jujuy Province, Argentina)

Arnold

Cabassi

Tassi

et al. 2017

Journal of Volcanology and Geothermal Research

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“…In equation (A1), * is the equilibrium liquid-vapor isotopic fractionation calculated from equations given by Horita and Wesolowski (1994): …”

Section: Acknowledgementsmentioning

confidence: 99%

Landscape-gradient assessment of thermokarst lake hydrology using water isotope tracers

Narancic

Wolfe

Pienitz

et al. 2017

Journal of Hydrology

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Please cite this article as: Narancic, B., Wolfe, B.B., Pienitz, R., Meyer, H., Lamhonwah, D., Landscape-gradient assessment of thermokarst lake hydrology using water isotope tracers, Journal of Hydrology (2016), doi: http:// dx.doi.org/10. 1016/j.jhydrol.2016.11.028 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.1 Landscape-gradient assessment of thermokarst lake hydrology using water isotope -Water isotopes are used to characterize thermokarst lake hydrology in Nunavik, Canada.-Rainfall and/or permafrost meltwater are the main lake water sources.-Maritime climate enhances the hydrological resiliency of thermokarst lakes.-Terrestrial carbon inputs from surface runoff are likely to increase in the future.-Thermokarst lakes will persist and methane emissions are likely to increase.3 ABSTRACT Thermokarst lakes are widespread in arctic and subarctic regions. In subarctic Québec (Nunavik), they have grown in number and size since the mid-20 th century.Recent studies have identified that these lakes are important sources of greenhouse gases. This is mainly due to the supply of catchment-derived dissolved organic carbon that generates anoxic conditions leading to methane production. To assess the potential role of climate-driven changes in hydrological processes to influence greenhouse-gas emissions, we utilized water isotope tracers to characterize the water balance of thermokarst lakes in Nunavik during three consecutive mid-to late summer seasons (2012)(2013)(2014). Lake distribution stretches from shrub-tundra overlying discontinuous permafrost in the north to spruce-lichen woodland with sporadic permafrost in the south.Calculation of lake-specific input water isotope compositions ( I ) and lake-specific evaporation-to-inflow (E/I) ratios based on an isotope-mass balance model reveal a narrow hydrological gradient regardless of diversity in regional landscape characteristics. Nearly all lakes sampled were predominantly fed by rainfall and/or permafrost meltwater, which suppressed the effects of evaporative loss. Only a few lakes in one of the southern sampling locations, which overly highly degraded sporadic permafrost terrain, appear to be susceptible to evaporative lake-level drawdown. We attribute this lake hydrological resiliency to the strong maritime climate in coastal regions of Nunavik. Predicted climate-driven increases in precipitation and permafrost degradation will likely contribute to persistence and expansion of thermokarst lakes throughout the region. If coupled with an increase in terrestrial carbon inputs to thermokarst lakes from surface runoff, conditions favorable for mineralizatio...

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“…The slopes of the linear regression lines between δ 18 O and surface air temperature, the ture (e.g., Horita and Wesolowski, 1994). If the condensation temperature is assumed to be correlated with the surface air temperature, condensed precipitation should be isotopically lighter under the lower air temperature condition (Dansgaard, 1964).…”

Section: Relation To Local Meteorological Parametersmentioning

confidence: 99%

Characteristics of hydrogen and oxygen stable isotope ratios in precipitation collected in a snowfall region, Aomori Prefecture, Japan

Hasegawa

Kawabata

Sato³

et al. 2014

Geochem. J.

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Liquid-vapor fractionation of oxygen and hydrogen isotopes of water from the freezing to the critical temperature

Cited by 777 publications

References 17 publications

Fluid geochemistry of a deep-seated geothermal resource in the Puna plateau (Jujuy Province, Argentina)

Fluid geochemistry of a deep-seated geothermal resource in the Puna plateau (Jujuy Province, Argentina)

Landscape-gradient assessment of thermokarst lake hydrology using water isotope tracers

Characteristics of hydrogen and oxygen stable isotope ratios in precipitation collected in a snowfall region, Aomori Prefecture, Japan

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