DOI: 10.1029/2018JC014102
Scopus记录号: 2-s2.0-85050596573
论文题名: The Relationship of Near-Surface Flow, Stokes Drift and the Wind Stress
作者: Clarke A.J. ; Van Gorder S.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 7 起始页码: 4680
结束页码: 4692
语种: 英语
英文关键词: Lagrangian flow
; Stokes drift
; surface gravity waves
英文摘要: Many years of simultaneous hourly buoy wind and directional wave spectra data in the Gulf of Mexico and the Pacific were used to estimate Stokes drift and u* ew where u* = (magnitude of the local windstress/water density)1/2 and ew is a unit vector in the direction of the local wind. Stokes drift and u* ew were strongly vectorally correlated, the two vectors on average being within a few degrees of one another. This result remained valid even when there was evidence of remotely forced swell. Extension of the observed wave spectra above 0.35 Hz to the u*-dependent wave breaking frequency shows that typically the e-folding scale of the Stokes drift with depth is less than 1.8 m, much smaller than the Ekman layer e-folding scale. Therefore, there is negligible induced Eulerian cancellation of the Stokes drift, and the surface particle movement is governed by the Eulerian velocity + |uStokes|ew. Taking into account wave spreading, |uStokes| typically ranges from about 3 to 13 cm/s. Thus, the Stokes drift, which can be estimated directly from the wind stress, is an order one contributor to the surface transport of particles. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113634
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, United States
Recommended Citation:
Clarke A.J.,Van Gorder S.. The Relationship of Near-Surface Flow, Stokes Drift and the Wind Stress[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(7)