| ENSO期间热带西太平洋势能的年际变化 |
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| 引用本文： | 蒲书箴,于卫东,程军.ENSO期间热带西太平洋势能的年际变化[J].海洋科学进展,2005,23(3):256-264. |
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| 作者姓名： | 蒲书箴 于卫东 程军 |
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| 作者单位： | 国家海洋局,第一海洋研究所,山东,青岛,266061;海洋环境科学和数值模拟国家海洋局重点实验室,山东,青岛,266061;国家海洋局,第一海洋研究所,山东,青岛,266061;海洋环境科学和数值模拟国家海洋局重点实验室,山东,青岛,266061;国家海洋局,第一海洋研究所,山东,青岛,266061;海洋环境科学和数值模拟国家海洋局重点实验室,山东,青岛,266061 |
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| 基金项目： | 国家重点基础研究发展规划项目--太平洋-印度洋暖池的Argo浮标观测（2002CB714001） |
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| 摘 要： | 利用1986/1987ENSO事件前后的深水CTD资料,计算了热带西太平洋(141°~165°E,10°N~10°S)相对于不同等压面的势能空间分布和时间变化。结果表明,ENSO期间热带西太平洋单位面积上水柱的势能明显减小,而热带西太平洋势能的经向变化明显大于纬向变化。经向变化的特征是赤道外势能大于赤道上的势能。势能最大值位于4°N和4°S,而最大年际变化则发生于7°N,远大于赤道附近。最后,还分析了热带西太平洋势能分布的地域性特征,并指出了这些特征与海洋水文特征的联系。
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| 关 键 词： | 热带西太平洋 ENSO 势能 年际变化 |
| 文章编号： | 1671-6647(2005)03-0256-09 |
| 收稿时间： | 2005-01-05 |
| 修稿时间： | 2005年1月5日 |
Interannual Variabilities in Potential Energy in the Western Tropical Pacific Ocean During an ENSO Event |
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| PU Shu-zhen,YU Wei-dong,CHENG Jun.Interannual Variabilities in Potential Energy in the Western Tropical Pacific Ocean During an ENSO Event[J].Advances in Marine Science,2005,23(3):256-264. |
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| Authors: | PU Shu-zhen YU Wei-dong CHENG Jun |
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| Abstract: | In this paper, the deep casting CTD data collected around the 1986/1987 ENSO event in the western tropical Pacific Ocean(141 165 E,140 100 W)are used to calculate the spatial and temporal variabilities in potential energy relative to different isobaric surfaces in the sea area. It is shown from the calculation results that the potential energy in a water column above a unit area in the western tropical Pacific Ocean decreased significantly during the ENSO event, and the longitudinal variabilities in the potential energy in the western tropical Pacific Ocean are greater than the latitudinal ones. The characteristics of the longitudinal variability are that the potential energy in the extra-equatorial area is greater than that at the equator, the maxima of potential energy are located at 4N and 4S, respectively, and the greatest interannual variability of potential energy occurs at 7N, which is much greater than that at the equator. Finally, the regional characteristics of potential energy in the western tropical Pacific Ocean are analyzed, and it is pointed out that these characteristics are associated with the marine hydrographic feature in the sea area. |
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| Keywords: | western tropical Pacific Ocean ENSO potential energy interannual variablity |
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