Mathematics – Logic
Scientific paper
Jun 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3511607h&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 11, CiteID L11607
Mathematics
Logic
5
Oceanography: Biological And Chemical: Carbon Cycling (0428), Oceanography: General: Arctic And Antarctic Oceanography (9310, 9315), Oceanography: Biological And Chemical: Radioactivity And Radioisotopes, Oceanography: Biological And Chemical: Stable Isotopes (0454, 1041), Oceanography: General: Time Series Experiments (1872, 3270, 4475)
Scientific paper
Understanding the processes driving the carbon cycle in the Arctic Ocean is important for assessing the impacts of the predicted rapid and amplified climate change in this region. We analyzed settling particle samples intercepted by a time-series sediment trap deployed in the abyssal Canada Basin (at 3067 m) in order to examine carbon export to the deep Arctic Ocean. Strikingly old radiocarbon ages (apparent mean 14C age = ~1900 years) of the organic carbon, abundant lithogenic material (~80%), and mass flux variations temporally decoupled from the cycle of primary productivity in overlying surface waters together suggest that, unlike other ocean basins, the majority of the particulate organic carbon entering the deep Canada Basin is supplied from the surrounding margins.
Eglinton Timothy I.
Honjo Susumu
Hwang Jeomshik
Krishfield Richard A.
Manganini Steven J.
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