Idealised modelling of ocean circulation driven by conductive and hydrothermal fluxes at the seabed
Idealised modelling of ocean circulation driven by conductive and hydrothermal fluxes at the seabed
复制标题
由海底传导通量和热液通量驱动的海洋环流的理想化建模
DOI：
10.1016/j.ocemod.2017.12.005
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发表时间：
2018
期刊：
影响因子：
3.2
通讯作者：
Barnes J
中科院分区：
文献类型：
--
作者：
Barnes J
地热加热越来越被认为是影响海洋环流的一个重要因素，模拟研究表明，这种热源可能导致南极底层水形成速度的一级变化，以及深海海洋的显著变暖效应。然而，在数值模式中，尽管估计全球地热通量的三分之一是通过热液源引入海洋的，但进入海洋的地热通量一般被视为完全传导通量。一个分析的二维模型的环流，它演示了通过洋底的体积通量的影响。模拟使用NEMO数值大气环流模型在一个理想化的域，然后被用来分区之间的热传导和热液源的热通量，并明确测试的灵敏度的循环制定的深海热通量。我们的模拟表明，热液通量作为一个质量交换确实改变了深海的热量分布，增加了平流热传输从深渊相比，传导热源高达35%。因此，我们建议，列入热液通量可以是一个重要的除了当然分辨率的海洋模式。
Geothermal heating is increasingly recognised as an important factor affecting ocean circulation, with modelling studies suggesting that this heat source could lead to first-order changes in the formation rate of Antarctic Bottom Water, as well as a significant warming effect in the abyssal ocean. Where it has been represented in numerical models, however, the geothermal heat flux into the ocean is generally treated as an entirely conductive flux, despite an estimated one third of the global geothermal flux being introduced to the ocean via hydrothermal sources.A modelling study is presented which investigates the sensitivity of the geothermally forced circulation to the way heat is supplied to the abyssal ocean. An analytical two-dimensional model of the circulation is described, which demonstrates the effects of a volume flux through the ocean bed. A simulation using the NEMO numerical general circulation model in an idealised domain is then used to partition a heat flux between conductive and hydrothermal sources and explicitly test the sensitivity of the circulation to the formulation of the abyssal heat flux. Our simulations suggest that representing the hydrothermal flux as a mass exchange indeed changes the heat distribution in the abyssal ocean, increasing the advective heat transport from the abyss by up to 35% compared to conductive heat sources. Consequently, we suggest that the inclusion of hydrothermal fluxes can be an important addition to course-resolution ocean models.
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影响因子：
5.8
作者：
Koschinsky, Andrea;Garbe-Schoenberg, Dieter;Strauss, Harald
通讯作者：
Strauss, Harald
DOI：
--
发表时间：
1987
期刊：
影响因子：
--
作者：
T. Joyce;K. Speer
通讯作者：
K. Speer
全球海洋状态当代海平面趋势估计对地热通量影响的敏感性
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
C. Piecuch;P. Heimbach;R. Ponte;G. Forget
通讯作者：
G. Forget
影响因子：
--
作者：
L. S. Urakawa;H. Hasumi
通讯作者：
L. S. Urakawa;H. Hasumi
DOI：
10.1016/0967-0637(96)00095-7
发表时间：
1996
期刊：
Zeitschrift für Epileptologie
影响因子：
--
作者：
L. Thompson;G. Johnson
通讯作者：
G. Johnson