Origin and Flow Dynamics of Perennial Groundwater in Continuous Permafrost Terrain using Isotopes and Noble Gases: Case Study of the Fishing Branch River, Northern Yukon, Canada
作者： Nicholas Utting , Ian Clark , Bernard Lauriol , Martin Wieser , Werner Aeschbach-Hertig
DOI: 10.1002/PPP.1732
关键词: Hydrology 、 Depression-focused recharge 、 Surface water 、 Streamflow 、 Groundwater 、 Aquifer 、 Geology 、 Groundwater recharge 、 Groundwater flow 、 Groundwater discharge
摘要: Perennially flowing groundwater discharges along a 15-km section of the Fishing Branch River, Yukon causing open water during winter and numerous discrete springs near Bear Cave Mountain. Groundwater flow occurs in karstified marine carbonate rocks as well alluvial river talik(s). The PCO2 δ13C indicate dissolves CO2 recharge organic soils weathers limestone aquifer. These analyses show three chemistry groups variability surface chemistry. variations are related to differences exposed area. δ18O δ2H results that represents approximately annual average precipitation based on samples collected region. Noble gases were used determine temperature lies between 0 5 °C which suggests happens summer. ages, calculated using 3H-3He dating, found be 17.7 years. River discharge was measured spring summer under different water-level conditions. Winter baseflow measurements width channel winter. Although decreases winter, maintains water. Copyright © 2012 John Wiley & Sons, Ltd.
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