Rossby rip currents
Rossby rip currents
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DOI：
10.1002/grl.50842
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发表时间：
2013-08
影响因子：
5.2
通讯作者：
D. Marshall;B. Vogel;Xiaoming Zhai
中科院分区：
文献类型：
--
作者：
D. Marshall;B. Vogel;Xiaoming Zhai
海洋Rossby波和涡旋通量的能量和流体向西，后者通过斯托克斯漂移或团输运。虽然波浪能量主要在西部边界消散，但质量守恒要求流体通过Rossby裂流返回近海。通过线性Rossby波理论、非线性数值模式和海面高度卫星观测资料的分析，研究了这些裂流的形式和大小。全球海洋上空罗斯比裂流向东的净体积输送估计为10 Sv（1 Sv <$106 m3 s−1）量级。在涡旋海洋中，向西的斯托克斯漂流和向东的裂流都可以呈现带状准纬向急流的形式。
Oceanic Rossby waves and eddies flux energy and fluid westward, the latter through the Stokes drift or bolus transport. While the wave energy is largely dissipated at the western boundary, mass conservation requires that the fluid be returned offshore through Rossby rip currents. The form and magnitude of these rip currents are investigated through linear Rossby wave theory, a nonlinear numerical model, and analysis of sea surface height satellite observations. The net eastward volume transport by Rossby rip currents over the global ocean is estimated to be of order 10 Sv (1 Sv ≡106 m3 s−1). In an eddying ocean, both the westward Stokes drift and eastward rip currents can assume the form of banded quasi‐zonal jets.