Biogeochemical Cycling of Dissolved Zinc in the Western Arctic (Arctic GEOTRACES GN01)
Biogeochemical Cycling of Dissolved Zinc in the Western Arctic (Arctic GEOTRACES GN01)
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北极西部溶解锌的生物地球化学循环(北极 GEOTRACES GN01)
DOI:
10.1029/2018gb005975
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发表时间:
2019
影响因子:
5.2
通讯作者:
Fitzsimmons, J. N.
中科院分区:
文献类型:
--
作者:
Jensen, L. T.;Wyatt, N. J.;Twining, B. S.;Rauschenberg, S.;Landing, W. M.;Sherrell, R. M.;Fitzsimmons, J. N.
The biogeochemical cycling of dissolved zinc (dZn) was investigated in the Western Arctic along the U.S. GEOTRACES GN01 section. Vertical profiles of dZn in the Arctic are strikingly different than the classic “nutrient‐type” profile commonly seen in the Atlantic and Pacific Oceans, instead exhibiting higher surface concentrations (~1.1 nmol/kg), a shallow subsurface absolute maximum (~4–6 nmol/kg) at 200 m coincident with a macronutrient maximum, and low deep water concentrations (~1.3 nmol/kg) that are homogeneous (sp.) with depth. In contrast to other ocean basins, typical inputs such as rivers, atmospheric inputs, and especially deep remineralization are insignificant in the Arctic. Instead, we demonstrate that dZn distributions in the Arctic are controlled primarily by (1) shelf fluxes following the sediment remineralization of high Zn:C and Zn:Si cells and the seaward advection of those fluxes and (2) mixing of dZn from source waters such as the Atlantic and Pacific Oceans rather than vertical biological regeneration of dZn. This results in both the unique profile shapes and the largely decoupled relationship between dZn and Si found in the Arctic. We found a weak dZn:Si regression in the full water column (0.077 nmol/μmol,r2= 0.58) that is higher than the global slope (0.059 nmol/μmol,r2= 0.94) because of the shelf‐derived halocline dZn enrichments. We hypothesize that the decoupling of Zn:Si in Western Arctic deep waters results primarily from a past ventilation event with unique preformed Zn:Si stoichiometries.
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DOI:
10.5194/cpd-6-2159-2010
发表时间:
2010
期刊:
Climate of The Past Discussions
影响因子:
--
作者:
Ø. Paasche;J. Bakke
通讯作者:
J. Bakke
DOI:
10.1016/0011-7471(62)90016-5
发表时间:
1962
期刊:
Deep Sea Research and Oceanographic Abstracts
影响因子:
--
作者:
V. Timofeyev
通讯作者:
V. Timofeyev
影响因子:
1.8
作者:
A. Aguilar‐Islas;R. Rember;S. Nishino;T. Kikuchi;M. Itoh
通讯作者:
A. Aguilar‐Islas;R. Rember;S. Nishino;T. Kikuchi;M. Itoh
影响因子:
16.6
作者:
Chan P;Halfar J;Adey W;Hetzinger S;Zack T;Moore GWK;Wortmann UG;Williams B;Hou A
通讯作者:
Hou A
DOI:
10.1016/j.dsr2.2008.10.024
发表时间:
2009-08-01
影响因子:
3
作者:
Chang, Bonnie X.;Devol, Allan H.
通讯作者:
Devol, Allan H.