Thermohaline intrusions in the thermocline of the western tropical Pacific Ocean
文献类型：CNKI期刊论文
| 作者 | LI Yuanlong; WANG Fan
|
| 发表日期 | 2013-07-15 |
| 出处 | Acta Oceanologica Sinica
 |
| 关键词 | thermohaline intrusions thermocline water mass western tropical Pacific |
| 英文摘要 | <正>The existing high-resolution hydrographic data in the western tropical Pacific Ocean are used to explore the spatial distribution and primary characteristics of thermohaline intrusions in the thermocline.Statistics show that the vertical scales of intrusions are 20-40 m in the upper thermocline(22.0-26.0σ_0) and 40-80 m in the lower thermocline(26.0-27.2σ_0).In the upper thermocline,the most intensive intrusions exist at the equatorial front(EF) where north/south Pacific water masses converge,and the westward spreading of the north Pacific tropical water(NPI'W) in the Philippines Sea also produces patches of intrusions surrounding its high-salinity tongue.In the lower thermocline,intrusions are also strong at the tropical front(TF) which is the boundary between the north Pacific subtropical/tropical waters.At the bottom of the thermocline (at about 27.0σ_0),intrusions mainly exist near the western boundary,which are produced by intermediate water convergence through the advection of subthermocline western boundary flows.Most strikingly a "C"-shape distribution of intrusions at around 26.4σ_0 is revealed,covering the vicinity of the EF,the TF,and the Mindanao Current(MC),i.e.,the western boundary pathway of the north Pacilic subtropical cell(STC). Synoptic section analysis reveals that intrusions are more prominent on the warm/sally Hank of the fronts, implying more cross-front tongues of cold/fresh water.Among the intrusions,those at the EF are of best lateral coherence which implies a unique driving mechanism involving near-inertial velocity perturbations near the equator. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | The National Natural Science Foundation of China under contract No.40890152 ; the National Basic Research Program of China under contract No.2012CB417401 |
| 卷 | v.32期:07页:49-58 |
| 语种 | 英文; |
| 分类号 | P731.1 |
| ISSN号 | 0253-505X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190801]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.GraduateUniversityofChineseAcademyofScience |
| 推荐引用方式 GB/T 7714 | LI Yuanlong,WANG Fan. Thermohaline intrusions in the thermocline of the western tropical Pacific Ocean. 2013. |
入库方式： OAI收割
来源：海洋研究所
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