中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Thermohaline finestructure observed near the northern Philippine coast

文献类型:CNKI期刊论文

作者Wang F(王凡); Li YL(李元龙)
发表日期2012-11-15
出处Chinese Journal of Oceanology and Limnology
关键词thermohaline finestructure thermohaline intrusions double diffusion Kuroshio mesoscale eddy
英文摘要Using hydrographic measurements from three recent surveys in the western tropical Pacific, this study revealed the existence and general features of thermohaline finestructure near the northern Philippine coast. Pronounced finestructures were detected in the layers of the North Pacific Tropical Water (NPTW) and the North Pacific Intermediate Water (NPIW) during all three cruises and shown to be mainly thermohaline intrusions. Characteristics of the intrusions were further investigated with spiciness curvature and salinity anomaly methods. The vertical scale of the intrusions was 20-50m and 50-100m in the NPTW and NPIW layers, respectively. Within the NPTW layer, the Turner angle distribution and correlation between salinity and density anomalies suggested that diffusive convection between surface fresh water and subsurface saline water played an important role in the development and maintenance of the intrusions. In addition, connection between thermohaline finestructure and larger-scale oceanic processes was explored using historical hydrographic data. The results reveal that the salinity field and the distribution of the intrusions in this region were largely determined by mesoscale eddies. As a result of eddy stirring, both isopycnal and diapycnal temperature/salinity gradients were strengthened, which gave rise to the development of thermohaline intrusions. The intrusions acted to enhance heat and salt fluxes and resulted in the mixing of water masses being more efficient. By linking mesoscale eddy stirring to micro-scale diffusion, thermohaline finestructure plays a vital role in the ocean energy cascade and water mass conversion in the northern Philippine Sea.
文献子类CNKI期刊论文
资助机构Supported by the National Natural Science Foundation of China (No.40890152) ; the Knowledge Innovation Program of Chinese Academy of Sciences (No. KZCX2-YW-Q11-02)
v.30期:06页:131-142
语种英文;
分类号P731.1
ISSN号0254-4059
源URL[http://ir.qdio.ac.cn/handle/337002/191066]  
专题中国科学院海洋研究所
作者单位1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences
2.GraduateUniversityofChineseAcademyofSciences
推荐引用方式
GB/T 7714
Wang F,Li YL. Thermohaline finestructure observed near the northern Philippine coast. 2012.

入库方式: OAI收割

来源:海洋研究所

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