Temporal and spatial variability of particle transport in the deep Arctic Canada Basin
To better understand the current carbon cycle and potentially detect its change in the rapidly changing Arctic Ocean, we examined sinking particles collected quasi-continuously over a period of 7 years (2004–2011) by bottom-tethered sediment trap moorings in the central Canada Basin. Total mass flux...
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ftuglasgow:oai:eprints.gla.ac.uk:116803 2023-05-15T14:27:27+02:00 Temporal and spatial variability of particle transport in the deep Arctic Canada Basin Hwang, Jeomshik Kim, Minkyoung Manganini, Steven J. Mcintyre, Cameron P. Haghipour, Negar Park, JongJin Krishfield, Richard A. Macdonald, Robie W. McLaughlin, Fiona A. Eglinton, Timothy I. 2015-04 text http://eprints.gla.ac.uk/116803/ http://eprints.gla.ac.uk/116803/1/116803.pdf en eng American Geophysical Union Wiley http://eprints.gla.ac.uk/116803/1/116803.pdf Hwang, J., Kim, M., Manganini, S. J., Mcintyre, C. P. <http://eprints.gla.ac.uk/view/author/34583.html> , Haghipour, N., Park, J., Krishfield, R. A., Macdonald, R. W., McLaughlin, F. A. and Eglinton, T. I. (2015) Temporal and spatial variability of particle transport in the deep Arctic Canada Basin. Journal of Geophysical Research: Oceans <http://eprints.gla.ac.uk/view/journal_volume/Journal_of_Geophysical_Research=3A_Oceans.html>, 120(4), pp. 2784-2799. (doi:10.1002/2014JC010643 <http://dx.doi.org/10.1002/2014JC010643>) cc_by_nc_nd_4 CC-BY-NC-ND Articles PeerReviewed 2015 ftuglasgow https://doi.org/10.1002/2014JC010643 2020-05-28T22:11:08Z To better understand the current carbon cycle and potentially detect its change in the rapidly changing Arctic Ocean, we examined sinking particles collected quasi-continuously over a period of 7 years (2004–2011) by bottom-tethered sediment trap moorings in the central Canada Basin. Total mass flux was very low (<100 mg m−2 d−1) at all sites and was temporally decoupled from the cycle of primary production in surface waters. Extremely low radiocarbon contents of particulate organic carbon and high aluminum contents in sinking particles reveal high contributions of resuspended sediment to total sinking particle flux in the deep Canada Basin. Station A (75°N, 150°W) in the southwest quadrant of the Canada Basin is most strongly influenced while Station C (77°N, 140°W) in the northeast quadrant is least influenced by lateral particle supply based on radiocarbon content and Al concentration. The results at Station A, where three sediment traps were deployed at different depths, imply that the most likely mode of lateral particle transport was as thick clouds of enhanced particle concentration extending well above the seafloor. At present, only 1%–2% of the low levels of new production in Canada Basin surface waters reaches the interior basin. Lateral POC supply therefore appears to be the major source of organic matter to the interior basin. However, ongoing changes to surface ocean boundary conditions may influence both lateral and vertical supply of particulate material to the deep Canada Basin. Article in Journal/Newspaper Arctic Arctic Arctic Ocean canada basin University of Glasgow: Enlighten - Publications Arctic Arctic Ocean Canada Journal of Geophysical Research: Oceans 120 4 2784 2799 |
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Open Polar |
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University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
English |
description |
To better understand the current carbon cycle and potentially detect its change in the rapidly changing Arctic Ocean, we examined sinking particles collected quasi-continuously over a period of 7 years (2004–2011) by bottom-tethered sediment trap moorings in the central Canada Basin. Total mass flux was very low (<100 mg m−2 d−1) at all sites and was temporally decoupled from the cycle of primary production in surface waters. Extremely low radiocarbon contents of particulate organic carbon and high aluminum contents in sinking particles reveal high contributions of resuspended sediment to total sinking particle flux in the deep Canada Basin. Station A (75°N, 150°W) in the southwest quadrant of the Canada Basin is most strongly influenced while Station C (77°N, 140°W) in the northeast quadrant is least influenced by lateral particle supply based on radiocarbon content and Al concentration. The results at Station A, where three sediment traps were deployed at different depths, imply that the most likely mode of lateral particle transport was as thick clouds of enhanced particle concentration extending well above the seafloor. At present, only 1%–2% of the low levels of new production in Canada Basin surface waters reaches the interior basin. Lateral POC supply therefore appears to be the major source of organic matter to the interior basin. However, ongoing changes to surface ocean boundary conditions may influence both lateral and vertical supply of particulate material to the deep Canada Basin. |
format |
Article in Journal/Newspaper |
author |
Hwang, Jeomshik Kim, Minkyoung Manganini, Steven J. Mcintyre, Cameron P. Haghipour, Negar Park, JongJin Krishfield, Richard A. Macdonald, Robie W. McLaughlin, Fiona A. Eglinton, Timothy I. |
spellingShingle |
Hwang, Jeomshik Kim, Minkyoung Manganini, Steven J. Mcintyre, Cameron P. Haghipour, Negar Park, JongJin Krishfield, Richard A. Macdonald, Robie W. McLaughlin, Fiona A. Eglinton, Timothy I. Temporal and spatial variability of particle transport in the deep Arctic Canada Basin |
author_facet |
Hwang, Jeomshik Kim, Minkyoung Manganini, Steven J. Mcintyre, Cameron P. Haghipour, Negar Park, JongJin Krishfield, Richard A. Macdonald, Robie W. McLaughlin, Fiona A. Eglinton, Timothy I. |
author_sort |
Hwang, Jeomshik |
title |
Temporal and spatial variability of particle transport in the deep Arctic Canada Basin |
title_short |
Temporal and spatial variability of particle transport in the deep Arctic Canada Basin |
title_full |
Temporal and spatial variability of particle transport in the deep Arctic Canada Basin |
title_fullStr |
Temporal and spatial variability of particle transport in the deep Arctic Canada Basin |
title_full_unstemmed |
Temporal and spatial variability of particle transport in the deep Arctic Canada Basin |
title_sort |
temporal and spatial variability of particle transport in the deep arctic canada basin |
publisher |
American Geophysical Union |
publishDate |
2015 |
url |
http://eprints.gla.ac.uk/116803/ http://eprints.gla.ac.uk/116803/1/116803.pdf |
geographic |
Arctic Arctic Ocean Canada |
geographic_facet |
Arctic Arctic Ocean Canada |
genre |
Arctic Arctic Arctic Ocean canada basin |
genre_facet |
Arctic Arctic Arctic Ocean canada basin |
op_relation |
http://eprints.gla.ac.uk/116803/1/116803.pdf Hwang, J., Kim, M., Manganini, S. J., Mcintyre, C. P. <http://eprints.gla.ac.uk/view/author/34583.html> , Haghipour, N., Park, J., Krishfield, R. A., Macdonald, R. W., McLaughlin, F. A. and Eglinton, T. I. (2015) Temporal and spatial variability of particle transport in the deep Arctic Canada Basin. Journal of Geophysical Research: Oceans <http://eprints.gla.ac.uk/view/journal_volume/Journal_of_Geophysical_Research=3A_Oceans.html>, 120(4), pp. 2784-2799. (doi:10.1002/2014JC010643 <http://dx.doi.org/10.1002/2014JC010643>) |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1002/2014JC010643 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
120 |
container_issue |
4 |
container_start_page |
2784 |
op_container_end_page |
2799 |
_version_ |
1766301202120704000 |