Partitioning and lateral transport of iron to the Canada Basin
Partitioning and lateral transport of iron to the Canada Basin
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DOI：
10.1016/j.polar.2012.11.001
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发表时间：
2013-06
期刊：
影响因子：
1.8
通讯作者：
A. Aguilar‐Islas;R. Rember;S. Nishino;T. Kikuchi;M. Itoh
中科院分区：
文献类型：
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作者：
A. Aguilar‐Islas;R. Rember;S. Nishino;T. Kikuchi;M. Itoh
2010年夏末，对博福特海西部水体中溶解铁（DFe）和悬浮可沥滤颗粒铁（LPFe）的浓度进行了研究。表面DFe浓度升高（0.49-1.42 nM）与最近的研究报告相似，可能反映了海冰融化和河流排放的输入。在受太平洋影响的沃茨中，从近岸到近海观察到的DFe（5.20-0.48 nM）和LPFe（88.2-1.83 nM）值迅速下降，表明清除过程限制了DFe从陆架到深盆的输入。然而，在这个地区发现频繁的涡流可能是重要的，在促进横向平流，建议在附近的暖心涡流的海上站较高的表面DFe浓度。在大西洋层内，相对均匀的DFe（0.69-0.80纳米）和LPFe（1.18-2.13纳米）的浓度观察到在所有的站，反映了平衡的输入和去除过程之间的相互作用在这个水团。通过比较东北极和西北极之间大西洋水核心内的DFe值，推断罗蒙诺索夫海岭以东的DFe输入。
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.