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DOI | 10.1002/2017GL072625 |
Focusing of internal tides by near-inertial waves | |
Cuypers, Y.1; Bouruet-Aubertot, P.1; Vialard, J.1; McPhaden, M. J.2 | |
2017-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA |
英文摘要 | The refraction of internal waves by lower-frequency near-inertial waves has been predicted theoretically, but never observed before. Here, we report observations of semi-diurnal internal tides generated by the rough topography of the Central Indian Ridge, in the presence of a strong, lower-frequency near-inertial wave field generated by a tropical storm. The semi-diurnal internal tide energy is trapped within upward propagating bands with a periodicity close to the inertial period. A ray-tracing model suggests that this trapping results from the internal tide refraction by the shear associated with near-inertial waves. This yields a strong increase of the internal tide energy and shear in space-time regions where the background flow focuses the rays, leading to the formation of caustics. This mechanism may increase vertical mixing generated by baroclinic tides in the vicinity of mid-ocean ridges in tropical regions. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398183700040 |
WOS关键词 | DEEP-OCEAN ; PROPAGATION ; GENERATION ; ENERGY ; CURRENTS ; RIDGE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27897 |
专题 | 气候变化 |
作者单位 | 1.Univ Paris 06, UPMC, Sorbonne Univ, LOCEAN IPSL,CNRS,IRD,MNHN, Paris, France; 2.NOAA, Pacific Marine Environm Lab, 7600 Sand Point Way Ne, Seattle, WA 98115 USA |
推荐引用方式 GB/T 7714 | Cuypers, Y.,Bouruet-Aubertot, P.,Vialard, J.,et al. Focusing of internal tides by near-inertial waves[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(5). |
APA | Cuypers, Y.,Bouruet-Aubertot, P.,Vialard, J.,&McPhaden, M. J..(2017).Focusing of internal tides by near-inertial waves.GEOPHYSICAL RESEARCH LETTERS,44(5). |
MLA | Cuypers, Y.,et al."Focusing of internal tides by near-inertial waves".GEOPHYSICAL RESEARCH LETTERS 44.5(2017). |
条目包含的文件 | 条目无相关文件。 |
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