137&#176;经向断面温、盐度的年际变异

137°经向断面温、盐度的年际变异

基金项目: "国家重点基础研究发展规划"G1998040900

1.
Institute of Oceanology, Chinese Academy of Scieiences, Qngdao 266071
2.
First Institute of Oceanography, State Oceanic Administration, Qingdao 266003

摘要: 系统地分析了137°E断面温、盐度的多年变化,主要结果为:(1)137°E断面100m层温度,在低纬度海域于某些年份出现异常低温,此现象可能与厄尔尼诺事件有关;指出棉兰老冷涡的存在是造成该断面于6°～8°N附近出现低温的主要原因。(2)厄尔尼诺期间,冬季137°E断面上28℃等温线所在纬度小于其多年平均值。(3)冬季137°E断面上次表层高盐水可划分为强型、次强型、中等型和弱型4种类型。
- 137° /
- E断面 /
- 温盐度变异 /
- 次表层高盐水类型
Abstract: Multi-year variations of temperature and salinity at the 137°E section are analysed systematically. Main results are as follows:(1)In the 100 m layer, an anomalous low temperature occurred in certain areas of the low latitude in certain years, which is relative to the El Niño event. Analyses also show that the existence of the Mindanao eddy is main reason causing the low tempera-ture occurring near area of 6°～8°N at the 137°E section. (2)During El Niño, the range surrounded by 28℃ isotherm in winter is less than its multi-year averaged value. (3)The subsurface high-salinity water in winter can be classified into four types:strong, substroug, middle and weak.
- 137° /
- E section /
- temperature-salinity variation /
- subsurface high-salinity water types

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