Partitioning and lateral transport of iron to the Canada Basin

• Aguilar-Islas Ana M.

  School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, AK, USA.

• Rember Robert

  International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, AK, USA.

• Nishino Shigeto

  Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan.

• Kikuchi Takashi

  Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan.

• Itoh Motoyo

  Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan.

抄録

The concentration of dissolved iron (DFe) and suspended leachable particulate iron (LPFe) in the water column of the western Beaufort Sea were investigated during the late summer of 2010. Elevated concentrations of surface DFe (0.49-1.42 nM) were similar to those reported in resent studies, likely reflecting input from melting sea ice and river discharge. The rapid decrease in DFe (5.20-0.48 nM) and LPFe (88.2-1.83 nM) values observed from inshore to offshore in Pacific influenced waters, suggest scavenging processes limit the input of DFe from the shelf to the deep basin. However, frequent eddies found in this region are likely important in promoting lateral advection, as suggested by higher surface DFe concentrations at an offshore station in the vicinity of a warm-core eddy. Within the Atlantic layer, relatively homogeneous DFe (0.69-0.80 nM) and LPFe (1.18-2.13 nM) concentrations were observed at all the stations, reflecting a balance in the interplay between input and removal processes within this watermass. An input of DFe east of the Lomonosov Ridge was inferred by comparing DFe values within the core of Atlantic water between the Eastern and Western Arctic.

収録刊行物

• Polar science

  Polar science 7 (2), 82-99, 2013-06

  国立極地研究所

キーワード

• Trace metals
• Dissolved iron
• Arctic Ocean
• Canada Basin
• Shelf input

詳細情報

• CRID: 1574231877662275968
• NII論文ID: 110009579429
• NII書誌ID: AA12240481
• ISSN: 18739652
• 本文言語コード: en
• データソース種別:
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