Laboratory experiments on mass transport by large amplitude mode-2 internal solitary waves
Laboratory experiments on mass transport by large amplitude mode-2 internal solitary waves
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DOI：
10.1063/1.4869101
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发表时间：
2014-04
影响因子：
4.6
通讯作者：
A. Brandt;K. Shipley
中科院分区：
文献类型：
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作者：
A. Brandt;K. Shipley
近海内孤立波(ISW)的存在是公认的。对大幅度(模1和模2)孤立波的大量观测有助于确定它们的独特性质；特别是它们包含能够进行长距离质量传输的内部再循环区域(俘获的核心)。然而，2模ISW的基本物理原理还没有被很好地理解。目前的实验和相关的数值模拟的重点是提供模式2 ISW输送质量的程度的第一个定量量度，并洞察质量输送对海岸混合和生化物质分布的潜在影响。ISW是通过从最初混合的体积中释放液体而产生的。结果表明，前导和后导传质的幅度和质量输入量与强迫程度成正比，并随着激波强度的增大而以近似均匀的速度衰减。
The existence of internal solitary waves (ISWs) in the coastal ocean is well established. Numerous observations of large amplitude (both mode-1 and mode-2) solitary waves have facilitated the identification of their unique properties; in particular they contain regions of internal recirculation (trapped cores) that enable mass transport over large distances. However, the basic physics of mode-2 ISWs is as yet not well understood. The present experiments and the associated numerical simulations are focused on providing the first quantitative measure of the extent of mass transported by mode-2 ISWs and insight into the potential effects of mass transport on coastal mixing and the distribution of biochemical material. The ISWs were generated by the release of fluid from an initially mixed volume. It was found that the amplitude and amount of mass transported by the leading and second, following ISW, was proportional to the level of forcing and was attenuated at an approximately uniform rate as the ISW propag...