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...
| Main Authors: | , , , , , , , , , |
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| Format: | Text |
| Language: | English |
| Published: |
ETH Zurich
2015
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.3929/ethz-b-000101142 http://hdl.handle.net/20.500.11850/101142 |
| Summary: | 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 ... : Journal of Geophysical Research: Oceans, 120 (4) ... |
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