Pathways of shelf waters and Pacific-derived waters in the Arctic Ocean halocline inferred from stable oxygen isotopes

根据稳定氧同位素推断的北冰洋盐跃层陆架水域和太平洋衍生水域的路径

基本信息

项目摘要

The purpose of the project is to provide a quantitative assessment of water mass distribution and circulation within the Arctic Ocean. Stable oxygen isotopes (d18O) of the water aeltare a conservative tracer and will be used together with hydro-chemical data to study the influence of shelf-derived freshwaters (i.e. river water and sea-ice derived melt/brine waters) and Pacific-derived waters. In doing so the impact of these waters on the halocline, the Atlantic layer and the Deep and Bottom waters of the Arctic Ocean will be quantified. It is known that there are inter-decadal variations in the distribution of the Pacific component in the Arctic Ocean but recently also strong variations were observed in freshwater distributions in the Transpolar Drift Stream in 2007 thus indicating additional inter-annual variations. It is not known whether the variations observed 2007 are a permanent feature and whether they are related to the absence of Pacific waters during that time. The planned comprehensive and quantitative evaluation of freshwater and Pacific water in the Arctic Ocean halocline will thus help to further understand the impact and the potential feedbacks of the Arctic Ocean hydrography on Arctic and global climate change.
该项目的目的是对北冰洋内的水团分布和环流进行定量评估。水的稳定氧同位素(d18 O)是一种保守的示踪剂,将与水化学数据一起用于研究来自大陆架的淡水沃茨(即河水和海冰融化/盐水沃茨)和来自太平洋的沃茨的影响。在这样做的过程中,这些沃茨对盐跃层、大西洋层和北冰洋深水和底层沃茨的影响将被量化。众所周知,北冰洋太平洋成分的分布存在年代际变化,但最近在2007年跨极地漂流流的淡水分布中也观察到了强烈的变化,从而表明了额外的年际变化。目前尚不清楚2007年观察到的变化是否是一个永久性特征,以及它们是否与当时太平洋沃茨的消失有关。因此,计划对北冰洋盐跃层中的淡水和太平洋水进行的全面定量评价将有助于进一步了解北冰洋水文地理对北极和全球气候变化的影响和潜在反馈。

项目成果

期刊论文数量(8)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
A baseline for the vertical distribution of the stable carbon isotopes of dissolved inorganic carbon (δ13CDIC) in the Arctic Ocean
北冰洋溶解无机碳稳定碳同位素 (Ύ´13CDIC) 垂直分布的基线
  • DOI:
    10.1007/s41063-015-0001-0
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Polyak
  • 通讯作者:
    Polyak
First 236U data from the Arctic Ocean and use of 236U/238U and 129I/236U as a new dual tracer
  • DOI:
    10.1016/j.epsl.2016.02.020
  • 发表时间:
    2016-04-15
  • 期刊:
  • 影响因子:
    5.3
  • 作者:
    Casacuberta, N.;Masque, P.;Christl, M.
  • 通讯作者:
    Christl, M.
The impact of climatic and atmospheric teleconnections on the brine inventory over the Laptev Sea shelf between 2007 and 2011
2007 年至 2011 年间气候和大气遥相关对拉普捷夫海陆架盐水库存的影响
  • DOI:
    10.1002/2015gc006063
  • 发表时间:
    2011
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    Thibodeau
  • 通讯作者:
    Thibodeau
Radium Isotopes Across the Arctic Ocean Show Time Scales of Water Mass Ventilation and Increasing Shelf Inputs
  • DOI:
    10.1029/2018jc013888
  • 发表时间:
    2018-07
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M. M. Rutgers van der Loeff-M.;L. Kipp;M. Charette;W. Moore;Erin E. Black;I. Stimac;A. Charkin;D. Bauch;Ole Valk;M. Karcher;T. Krumpen;N. Casacuberta;W. Smethie;R. Rember
  • 通讯作者:
    M. M. Rutgers van der Loeff-M.;L. Kipp;M. Charette;W. Moore;Erin E. Black;I. Stimac;A. Charkin;D. Bauch;Ole Valk;M. Karcher;T. Krumpen;N. Casacuberta;W. Smethie;R. Rember
Shelf basin exchange along the Siberian continental margin: Modification of Atlantic Water and Lower Halocline Water
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Dr. Dorothea Bauch其他文献

Dr. Dorothea Bauch的其他文献

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{{ truncateString('Dr. Dorothea Bauch', 18)}}的其他基金

Interplay between seasonal arctic sea-ice processes and halocline stability - towards understanding arctic gas and matter fluxes
季节性北极海冰过程与盐跃层稳定性之间的相互作用 - 有助于了解北极气体和物质通量
  • 批准号:
    429838323
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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大陆架边缘海水的层叠:风、冷却和稳定性
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Collaborative Research: Sloccum Glider in Western Antarctic Peninsula Continental Shelf Waters Pilot Study
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Collaborative Research: Sloccum Glider in Western Antarctic Peninsula Continental Shelf Waters Pilot Study
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IAI Workshop: Hydroclimatology and Dynamics of the Rio dela Plata System and the Patos-Mirim Complex and their Influence on the Fluxes and Productivity of the Adjacent Shelf Waters
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