Optimal precursor of the transition from Kuroshio large meander to straight path
文献类型：CNKI期刊论文
| 作者 | Wang Q(王强); Ma LB(马利斌); Xu QQ(徐强强) |
| 发表日期 | 2013-09-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | Kuroshio large meander(LM) precursor conditional nonlinear optimal perturbation(CNOP) |
| 英文摘要 | We used the conditional nonlinear optimal perturbation(CNOP) method to explore the optimal precursor of the transition from Kuroshio large meander(LM) to straight path within a barotropic inflowoutflow model,and found that large amplitudes of the optimal precursor are mainly located in the east of Kyushu,which implies that perturbations in the region are important for the transition from LM to straight path.Furthermore,we investigated the transition processes caused by the optimal precursor,and found that these processes could be divided into three stages.In the first stage,a cyclonic eddy is advected to the formation region of the Kuroshio large meander,which enhances the LM path and causes a cyclonic eddy to shed from the Kuroshio mainstream.This process causes the LM path to change into a small meander path.Subsequently,the small meander is maintained for a period because the vorticity advection is balanced by the beta effect in the second stage.In the third stage,the small meander weakens and the straight path ultimately forms.The positive vorticity advecting downstream is responsible for this process.The exploration of the optimal precursor will conduce to improve the prediction of the transition processes from LM path to straight path,and its spatial structure can be used to guide Kuroshio targeted observation studies. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Natural Science Foundation of China(No.41230420) ; the National Basic Research Program of China(973 Program)(No.2012CB417403) ; the Knowledge Innovation Program of Chinese Academy of Sciences(No.KZCX2-EW-201) ; the Basic Research Program of Science and Technology Projects of Qingdao(No.11-1-4-95-jch) ; the Open Fund of LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences |
| 卷 | v.31期:05页:221-229 |
| 语种 | 英文; |
| 分类号 | X937;P208 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190738]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.LASG,InstituteofAtmosphericPhysics,ChineseAcademyofSciences 3.UniversityofChineseAcademyofSciences 4.EastChinaSeaFisheriesResearchInstitute,ChineseAcademyofFisherySciences |
| 推荐引用方式 GB/T 7714 | Wang Q,Ma LB,Xu QQ. Optimal precursor of the transition from Kuroshio large meander to straight path. 2013. |
入库方式： OAI收割
来源：海洋研究所
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