CO₂ Outgassing from Spring Waters

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• 作者：Benjamin J. Maas ; Carol M. Wicks
• 关键词：CO2 outgassing ; Springs ; Carbonate
• 刊名：Aquatic Geochemistry
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：23
• 期：1
• 页码：53-60
• 全文大小：
• 刊物类别：Earth and Environmental Science
• 刊物主题：Geochemistry; Hydrology/Water Resources; Hydrogeology; Water Quality/Water Pollution;
• 出版者：Springer Netherlands
• ISSN：1573-1421
• 卷排序：23

文摘

CO₂ released from lakes, rivers, and estuaries has been included in estimates of the global CO₂ budget; however, CO₂ released from carbonate springs has not been routinely included in the estimate of the global CO₂ budget. The omission of carbonate spring water as a source of CO₂ might result in an underestimation of the overall flux of CO₂ from surface waters to the atmosphere. In this study, the flux of CO₂ from carbonate springs was calculated and compared to the rate of outgassing of CO₂ reported in the literature for other surface water bodies. The calculated fluxes of CO₂ from carbonate springs ranged 280–380,000 mmol m−2 d−1. A range that is larger than the range of CO₂ fluxes reported for estuaries (100–1900 mmol m−2 d−1), headwater streams and rivers (100–1600 mmol m−2 d−1), freshwater lakes (−300 to 3200 mmol m−2 d−1), and saline lakes (−300 to 9900 mmol m−2 d−1). This work demonstrates that the outgassing of CO₂ from springs should be included in the global CO₂ budget.