Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores
Sediment cores were collected from lakes in central and northern Canada and from Hudson Bay to compare current and historic net depositions of mercury. Cores from most locations were enriched in mercury in the upper layers deposited recently relative to deeper, historic layers. The lakes with the gr...
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/33952 2023-06-18T03:39:26+02:00 Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores Lockhart, W.L. Wilkinson, P. Billeck, B.N Danell, R.A. Hunt, R.V. Brunskill, G.J. Delaronde, J. St.Louis, V. 2019-06-05T16:12:09Z application/pdf http://hdl.handle.net/1993/33952 https://doi.org/10.1023/A:1005923123637 eng eng Kluwer Academic Publishers 1573-515X http://hdl.handle.net/1993/33952 https://doi.org/10.1023/A:1005923123637 open access Arctic Chronology Core Deposition Mercury Sediment Fluxes Canada Lake Technical Report 2019 ftunivmanitoba https://doi.org/10.1023/A:1005923123637 2023-06-04T17:38:23Z Sediment cores were collected from lakes in central and northern Canada and from Hudson Bay to compare current and historic net depositions of mercury. Cores from most locations were enriched in mercury in the upper layers deposited recently relative to deeper, historic layers. The lakes with the greatest enrichments in mercury were located in central/southern Canada. This enrichment was interpreted as being of anthropogenic origin. Mercury inputs at the Experimental Lakes Area (ELA) in northwestern Ontario inferred from a core profile agreed well with inputs calculated independently from precipitation and runoff data. Anthropogenic inputs of mercury to northwestern Ontario were calculated to be about 9 ug m-2 y-1. Considering all the locations over the geographic range, the core profiles infer that fluxes of mercury have increased on average by about 2 fold over the past half century. This is consistent with results from other sites in North America and Europe. Report Arctic Hudson Bay MSpace at the University of Manitoba Arctic Canada Ela ENVELOPE(9.642,9.642,63.170,63.170) Hudson Hudson Bay |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Arctic Chronology Core Deposition Mercury Sediment Fluxes Canada Lake |
spellingShingle |
Arctic Chronology Core Deposition Mercury Sediment Fluxes Canada Lake Lockhart, W.L. Wilkinson, P. Billeck, B.N Danell, R.A. Hunt, R.V. Brunskill, G.J. Delaronde, J. St.Louis, V. Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores |
topic_facet |
Arctic Chronology Core Deposition Mercury Sediment Fluxes Canada Lake |
description |
Sediment cores were collected from lakes in central and northern Canada and from Hudson Bay to compare current and historic net depositions of mercury. Cores from most locations were enriched in mercury in the upper layers deposited recently relative to deeper, historic layers. The lakes with the greatest enrichments in mercury were located in central/southern Canada. This enrichment was interpreted as being of anthropogenic origin. Mercury inputs at the Experimental Lakes Area (ELA) in northwestern Ontario inferred from a core profile agreed well with inputs calculated independently from precipitation and runoff data. Anthropogenic inputs of mercury to northwestern Ontario were calculated to be about 9 ug m-2 y-1. Considering all the locations over the geographic range, the core profiles infer that fluxes of mercury have increased on average by about 2 fold over the past half century. This is consistent with results from other sites in North America and Europe. |
format |
Report |
author |
Lockhart, W.L. Wilkinson, P. Billeck, B.N Danell, R.A. Hunt, R.V. Brunskill, G.J. Delaronde, J. St.Louis, V. |
author_facet |
Lockhart, W.L. Wilkinson, P. Billeck, B.N Danell, R.A. Hunt, R.V. Brunskill, G.J. Delaronde, J. St.Louis, V. |
author_sort |
Lockhart, W.L. |
title |
Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores |
title_short |
Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores |
title_full |
Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores |
title_fullStr |
Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores |
title_full_unstemmed |
Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores |
title_sort |
fluxes of mercury to lake sediments in central and northern canada inferred from dated sediment cores |
publisher |
Kluwer Academic Publishers |
publishDate |
2019 |
url |
http://hdl.handle.net/1993/33952 https://doi.org/10.1023/A:1005923123637 |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) |
geographic |
Arctic Canada Ela Hudson Hudson Bay |
geographic_facet |
Arctic Canada Ela Hudson Hudson Bay |
genre |
Arctic Hudson Bay |
genre_facet |
Arctic Hudson Bay |
op_relation |
1573-515X http://hdl.handle.net/1993/33952 https://doi.org/10.1023/A:1005923123637 |
op_rights |
open access |
op_doi |
https://doi.org/10.1023/A:1005923123637 |
_version_ |
1769004186581598208 |