Anomalous Noble Gas Solubility in Liquid Cloud Water: Possible Implications for Noble Gas Temperatures and Cloud Physics

Hall, Chris M.; Castro, Maria Clara; Scholl, Martha A.; Amalberti, Julien; Gingerich, Stephen B.

doi:10.1029/2020wr029306

Cited by 1 publication

(1 citation statement)

References 64 publications

(135 reference statements)

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“…However, rainfall cannot be the source of Sr seawater in the Theistareykir geothermal fluids. Indeed, noble gas studies in rainfall (e.g., [87][88][89]) have highlighted the presence of different patterns for ANG other than simply atmospheric air. By contrast, ice bodies which originate from the compaction of snow (buried snowbanks, glacial ice) have ANG ratios close to those of atmospheric air because they trap air bubbles, while ice that forms from the freezing of liquid water (i.e., pingo ice) is expected to have ANG ratios similar to ASW because ANG are mainly dissolved at solubility equilibrium [90,91].…”

Section: Angs and Sr: A Tracer Of Glacial Meltwater Rechargementioning

confidence: 99%

87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water

et al. 2022

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The determination of the current and past recharge sources, as well as the reconstruction of the timing of the recharge in geothermal reservoirs, is required in order to correctly assess the resource potential of these systems. Theistareykir is a newly developed geothermal field close to the well-known exploited fields of Krafla and Námafjall in NE Iceland. In this study, the 87Sr/86Sr ratios measured in deep geothermal fluids are presented and, together with the Cl and noble gas signatures, are used to place constraints on the fluid sources. The Cl/Sr and 87Sr/86Sr ratios show a peculiar and unique composition among Icelandic geothermal fluids. The 87Sr/86Sr ratios range from 0.70355 to 0.70671, suggesting the presence of a significant seawater component—possibly marine aerosols added to rain or snowfall—as well as an additional source of Sr leached from local basalts. Moreover, a correlation between the atmospheric noble gas (ANGs) elemental ratios Ne/Ar, Kr/Ar and Xe/Ar, and the 87Sr/86Sr ratios is observed. The latter results from the mixing of meteoric water with Sr leached from local basalts, meteoric water containing unrelated Sr from seawater, and recharge water with ANGs derived from trapped air bubbles in snow. We suggest that the combined ANGs and Sr seawater signatures are representative of a glacial water source derived from the melting of compacting snow.

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Section: Angs and Sr: A Tracer Of Glacial Meltwater Rechargementioning

confidence: 99%

87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water

et al. 2022

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Anomalous Noble Gas Solubility in Liquid Cloud Water: Possible Implications for Noble Gas Temperatures and Cloud Physics

Abstract: The groundwater noble gas temperature (NGT) proxy has been used for nearly four decades (

Cited by 1 publication

References 64 publications

87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water

87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water

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