The Rhines effect on the geographical characteristics of altimeter-observed eddies
文献类型：CNKI期刊论文
| 作者 | LIU Zhiliang; PANG Chongguang |
| 发表日期 | 2017-09-15 |
| 出处 | Acta Oceanologica Sinica
 |
| 关键词 | Rhines effect mesoscale eddy Rossby wave energy cascade eddy desert |
| 英文摘要 | The Rhines effect may be regarded as an interaction between Rossby waves and turbulence, in which the Rossby waves may radiate away eddy energy when their frequencies are equal or larger than those of the turbulence,thereby deforming and eventually destroying the existing eddies. Through comparing eddy-scale velocity and long Rossby wave phase speed in the oceans, a generalized form of the Rhines effect is examined on the geographical characteristics of altimeter-observed eddies. The results show that the generalized Rhines effect has a much greater influence on eddy characteristics than its classical form, which only considers the simple beta effect due to the meridional gradient of planetary vorticity. The largest amount of eddies are detected in regions where eddy-scale velocity is larger than the critical Rossby-wave phase speed considering a generalized beta effect. The eddies in those regions can grow via an inverse kinetic energy cascade and have much larger amplitudes and sizes. The "eddy desert" regions outside of the tropical oceans, which have far fewer detected eddies and much weaker eddy amplitudes, lie in areas where the eddy-scale velocity is less than the critical Rossby-wave phase speed. In those regions, the generalized Rhines effect may be a possible mechanism of suppressing eddy growth. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | The National Natural Science Foundation of China under contract No.41276026 ; the Ocean Strategic Pilot Project of Chinese Academy of Sciences under contract No.XDA11020301 ; the Key Program of National Natural Science Foundation of China under contract No.61233013 |
| 卷 | v.36期:09页:14-18 |
| 语种 | 英文; |
| 分类号 | P714;P731.2 |
| ISSN号 | 0253-505X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189172]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.QingdaoNationalLaboratoryforMarineScienceandTechnology |
| 推荐引用方式 GB/T 7714 | LIU Zhiliang,PANG Chongguang. The Rhines effect on the geographical characteristics of altimeter-observed eddies. 2017. |
入库方式： OAI收割
来源：海洋研究所
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