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Snowmelt, glacial and atmospheric sources of mercury in a subarctic mountain lake catchment, Yukon, Canada

Dates

Year
2017

Citation

Zdanowicz, Christian, 2017, Snowmelt, glacial and atmospheric sources of mercury in a subarctic mountain lake catchment, Yukon, Canada: Geochimica et Cosmochimica Acta.

Summary

In montane regions, ongoing and future shrinkage of glacier cover, coupled with a shortening snow cover period, can profoundly alter river hydrology but also lead to the release of airborne contaminants, such as mercury (Hg), deposited and stored in snow and ice. We used field data coupled with hydrological and atmospheric models to estimate and compare the contributions of Hg from snow/glacier melt and from direct atmospheric deposition, to Kusawa Lake, in subarctic Yukon, Canada. The estimated net Hg accumulation rate in supraglacial snow is 0.55 mg m-2 a-1. The modeled net atmospheric flux, including wet+dry deposition, is ~6 times larger, averaging 3.4 mg m-2 a-1, and comparable to the area-averaged meltwater Hg flux into Kusawa [...]

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  • LC MAP - Landscape Conservation Management and Analysis Portal
  • Northwest Boreal Landscape Conservation Cooperative

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ISSN http://sciencebase.gov/vocab/identifierScheme 00167037 (ISSN) 18729533 (EISSN)

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journalGeochimica et Cosmochimica Acta
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value2017-09-28T14:17:51.903+02:00

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