Impact of hydrothermalism on the ocean iron cycle
Impact of hydrothermalism on the ocean iron cycle
复制标题
热液作用对海洋铁循环的影响
DOI：
10.1098/rsta.2015.0291
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
J. Resing
中科院分区：
文献类型：
--
作者：
A. Tagliabue;J. Resing
由于热液作用提供的铁最终在铁有限的南大洋中流通，因此它在海洋生物碳泵中起着重要作用。我们部署了一套集中的敏感性实验与最先进的全球海洋模型的状态，以检查调节热液铁的寿命和不同的脊系统在管理热液对南大洋生物碳泵的影响的作用的过程。使用GEOTRACES截面数据，我们发现热液铁的稳定化在某些地区是重要的，但不是所有地区。对南大洋生物碳泵的影响主要是勘探不足的南部洋脊系统，突出表明需要在这一区域进行未来勘探。我们发现，在等密度层上的热液铁供应大西洋和太平洋盆地之间，这与盆地间的对比在氧化动力学相结合时，提出了一个温和的影响大西洋洋脊南大洋生物碳泵的盆地间差异。最后，我们提出了一系列的过程，在不同的规模，必须更好地约束，以提高我们的理解如何热液作用影响海洋循环的铁和碳。这篇文章是主题问题“海洋微量元素化学的生物和气候影响”的一部分。
As the iron supplied from hydrothermalism is ultimately ventilated in the iron-limited Southern Ocean, it plays an important role in the ocean biological carbon pump. We deploy a set of focused sensitivity experiments with a state of the art global model of the ocean to examine the processes that regulate the lifetime of hydrothermal iron and the role of different ridge systems in governing the hydrothermal impact on the Southern Ocean biological carbon pump. Using GEOTRACES section data, we find that stabilization of hydrothermal iron is important in some, but not all regions. The impact on the Southern Ocean biological carbon pump is dominated by poorly explored southern ridge systems, highlighting the need for future exploration in this region. We find inter-basin differences in the isopycnal layer onto which hydrothermal Fe is supplied between the Atlantic and Pacific basins, which when combined with the inter-basin contrasts in oxidation kinetics suggests a muted influence of Atlantic ridges on the Southern Ocean biological carbon pump. Ultimately, we present a range of processes, operating at distinct scales, that must be better constrained to improve our understanding of how hydrothermalism affects the ocean cycling of iron and carbon. This article is part of the themed issue ‘Biological and climatic impacts of ocean trace element chemistry’.
影响因子：
5.2
作者：
Tagliabue, Alessandro;Aumont, Olivier;Yool, Andrew
通讯作者：
Yool, Andrew