A Laboratory Study of Iceberg Side Melting in Vertically Sheared Flows
A Laboratory Study of Iceberg Side Melting in Vertically Sheared Flows
复制标题
垂直剪切流中冰山侧面融化的室内研究
DOI：
10.1175/jpo-d-17-0185.1
复制
发表时间：
2018
影响因子：
3.5
通讯作者：
Straneo, F.
中科院分区：
文献类型：
--
作者：
FitzMaurice, A.;Cenedese, C.;Straneo, F.
早期的研究表明，冰山的侧面融化垂直均匀的水平速度是由两个不同的制度，这取决于熔体羽流的行为，并产生一个非线性的侧面融化速率对速度的依赖性控制。在这里，我们扩展这项研究，考虑在实验室设置的两层垂直剪切流冰块融化。据发现，使用的垂直平均流速在当前的融化参数化给出了低估的潜艇侧融化率，部分原因是侧融化率对流速的依赖性的非线性，但也因为垂直剪切在水平速度剖面从根本上改变了冰块周围的流分裂，因此速度感受到的冰面。一项对格陵兰峡湾90座冰山的观测记录表明，这种影响可能会使冰山侧面的融化率平均低估21%。
An earlier study indicates that the side melting of icebergs subject to vertically homogeneous horizontal velocities is controlled by two distinct regimes, which depend on the melt plume behavior and produce a nonlinear dependence of side melt rate on velocity. Here, we extend this study to consider ice blocks melting in a two-layer vertically sheared flow in a laboratory setting. It is found that the use of the vertically averaged flow speed in current melt parameterizations gives an underestimate of the submarine side melt rate, in part because of the nonlinearity of the dependence of the side melt rate on flow speed but also because vertical shear in the horizontal velocity profile fundamentally changes the flow splitting around the ice block and consequently the velocity felt by the ice surface. An observational record of 90 icebergs in a Greenland fjord suggests that this effect could produce an average underestimate of iceberg side melt rates of 21%.
影响因子：
5.2
作者：
FitzMaurice, A.;Cenedese, C.;Straneo, F.
通讯作者：
Straneo, F.
影响因子：
2.9
作者：
E. Josberger;S. Neshyba
通讯作者：
S. Neshyba
拉布拉多海冰山融化产生的表面浮力羽流
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
A. Yankovsky;I. Yashayaev
通讯作者：
I. Yashayaev