Ice characteristics, and mercury content of ice, air and underlying seawater in the eastern Beaufort Sea
The Arctic sea-ice environment has been undergoing dramatic changes in the past decades; to which extent this will affect the deposition, fate, and effects of chemical contaminants remains virtually unknown. Here, we report the first study on the distribution and transport of mercury (Hg) across the...
Main Authors: | , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2011
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.808217 https://doi.org/10.1594/PANGAEA.808217 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.808217 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.808217 2023-05-15T14:25:42+02:00 Ice characteristics, and mercury content of ice, air and underlying seawater in the eastern Beaufort Sea Chaulk, Amanda Stern, Gary A Armstrong, Debbie Barber, David G Wang, Feiyue MEDIAN LATITUDE: 71.269564 * MEDIAN LONGITUDE: -125.156175 * SOUTH-BOUND LATITUDE: 69.946000 * WEST-BOUND LONGITUDE: -129.443000 * NORTH-BOUND LATITUDE: 72.653000 * EAST-BOUND LONGITUDE: -120.394000 * DATE/TIME START: 2008-03-01T00:00:00 * DATE/TIME END: 2008-05-25T00:00:00 2011-02-28 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.808217 https://doi.org/10.1594/PANGAEA.808217 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.808217 https://doi.org/10.1594/PANGAEA.808217 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Chaulk, Amanda; Stern, Gary A; Armstrong, Debbie; Barber, David G; Wang, Feiyue (2011): Mercury Distribution and Transport Across the Ocean-Sea-Ice-Atmosphere Interface in the Arctic Ocean. Environmental Science & Technology, 45(5), 1866-1872, https://doi.org/10.1021/es103434c International Polar Year (2007-2008) IPY Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.808217 https://doi.org/10.1021/es103434c 2023-01-20T07:32:55Z The Arctic sea-ice environment has been undergoing dramatic changes in the past decades; to which extent this will affect the deposition, fate, and effects of chemical contaminants remains virtually unknown. Here, we report the first study on the distribution and transport of mercury (Hg) across the ocean-sea-ice-atmosphere interface in the Southern Beaufort Sea of the Arctic Ocean. Despite being sampled at different sites under various atmospheric and snow cover conditions, Hg concentrations in first-year ice cores were generally low and varied within a remarkably narrow range (0.5-4 ng/L), with the highest concentration always in the surface granular ice layer which is characterized by enriched particle and brine pocket concentration. Atmospheric Hg depletion events appeared not to be an important factor in determining Hg concentrations in sea ice except for frost flowers and in the melt season when snowpack Hg leaches into the sea ice. The multiyear ice core showed a unique cyclic feature in the Hg profile with multiple peaks potentially corresponding to each ice growing/melting season. The highest Hg concentrations (up to 70 ng/L) were found in sea-ice brine and decrease as the melt season progresses. As brine is the primary habitat for microbial communities responsible for sustaining the food web in the Arctic Ocean, the high and seasonally changing Hg concentrations in brine and its potential transformation may have a major impact on Hg uptake in Arctic marine ecosystems under a changing climate. Dataset Arctic Arctic Arctic Ocean Beaufort Sea ice core International Polar Year IPY Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean ENVELOPE(-129.443000,-120.394000,72.653000,69.946000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
International Polar Year (2007-2008) IPY |
spellingShingle |
International Polar Year (2007-2008) IPY Chaulk, Amanda Stern, Gary A Armstrong, Debbie Barber, David G Wang, Feiyue Ice characteristics, and mercury content of ice, air and underlying seawater in the eastern Beaufort Sea |
topic_facet |
International Polar Year (2007-2008) IPY |
description |
The Arctic sea-ice environment has been undergoing dramatic changes in the past decades; to which extent this will affect the deposition, fate, and effects of chemical contaminants remains virtually unknown. Here, we report the first study on the distribution and transport of mercury (Hg) across the ocean-sea-ice-atmosphere interface in the Southern Beaufort Sea of the Arctic Ocean. Despite being sampled at different sites under various atmospheric and snow cover conditions, Hg concentrations in first-year ice cores were generally low and varied within a remarkably narrow range (0.5-4 ng/L), with the highest concentration always in the surface granular ice layer which is characterized by enriched particle and brine pocket concentration. Atmospheric Hg depletion events appeared not to be an important factor in determining Hg concentrations in sea ice except for frost flowers and in the melt season when snowpack Hg leaches into the sea ice. The multiyear ice core showed a unique cyclic feature in the Hg profile with multiple peaks potentially corresponding to each ice growing/melting season. The highest Hg concentrations (up to 70 ng/L) were found in sea-ice brine and decrease as the melt season progresses. As brine is the primary habitat for microbial communities responsible for sustaining the food web in the Arctic Ocean, the high and seasonally changing Hg concentrations in brine and its potential transformation may have a major impact on Hg uptake in Arctic marine ecosystems under a changing climate. |
format |
Dataset |
author |
Chaulk, Amanda Stern, Gary A Armstrong, Debbie Barber, David G Wang, Feiyue |
author_facet |
Chaulk, Amanda Stern, Gary A Armstrong, Debbie Barber, David G Wang, Feiyue |
author_sort |
Chaulk, Amanda |
title |
Ice characteristics, and mercury content of ice, air and underlying seawater in the eastern Beaufort Sea |
title_short |
Ice characteristics, and mercury content of ice, air and underlying seawater in the eastern Beaufort Sea |
title_full |
Ice characteristics, and mercury content of ice, air and underlying seawater in the eastern Beaufort Sea |
title_fullStr |
Ice characteristics, and mercury content of ice, air and underlying seawater in the eastern Beaufort Sea |
title_full_unstemmed |
Ice characteristics, and mercury content of ice, air and underlying seawater in the eastern Beaufort Sea |
title_sort |
ice characteristics, and mercury content of ice, air and underlying seawater in the eastern beaufort sea |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.808217 https://doi.org/10.1594/PANGAEA.808217 |
op_coverage |
MEDIAN LATITUDE: 71.269564 * MEDIAN LONGITUDE: -125.156175 * SOUTH-BOUND LATITUDE: 69.946000 * WEST-BOUND LONGITUDE: -129.443000 * NORTH-BOUND LATITUDE: 72.653000 * EAST-BOUND LONGITUDE: -120.394000 * DATE/TIME START: 2008-03-01T00:00:00 * DATE/TIME END: 2008-05-25T00:00:00 |
long_lat |
ENVELOPE(-129.443000,-120.394000,72.653000,69.946000) |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Beaufort Sea ice core International Polar Year IPY Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Beaufort Sea ice core International Polar Year IPY Sea ice |
op_source |
Supplement to: Chaulk, Amanda; Stern, Gary A; Armstrong, Debbie; Barber, David G; Wang, Feiyue (2011): Mercury Distribution and Transport Across the Ocean-Sea-Ice-Atmosphere Interface in the Arctic Ocean. Environmental Science & Technology, 45(5), 1866-1872, https://doi.org/10.1021/es103434c |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.808217 https://doi.org/10.1594/PANGAEA.808217 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.808217 https://doi.org/10.1021/es103434c |
_version_ |
1766298156841041920 |