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本文利用日本气象厅在137°E断面获得的水温和盐度长期观测资料,分析了该断面温度场和盐度场的时空特征.结果表明,137°E断面的温度场和盐度场都存在着明显的季节差异和年际变化.冬季,温度场变化的关键区位于3°~18°N的300m以浅海域,而盐度场变化的关键区则位于18°~34°N的300m以浅海域.夏季,温度场变化的关键区位于3°~16°N的300m以浅海域,而盐度场则有两个关键区,分别位于3°~18°N的200m以浅海域和24°~34°N的300m以浅海域.温度场的年际变化与ENSO循环相联系,而盐度场的年际变化则比较复杂.
In this paper, using the long-term observation data of water temperature and salinity obtained by Japan Meteorological Agency at 137 ° E section, the temporal and spatial characteristics of temperature and salinity fields in this section are analyzed.The results show that the temperature field and salinity field at 137 ° E section exist With obvious seasonal variation and interannual variability.In winter, the key zone of temperature field change is located in shallow sea area of 300m to 3 ° ~ 18 ° N, while the key zone of salinity change field is located in 300m shallow sea area of 18 ° ~ 34 ° N In summer, the key zone of the temperature field is located in the shallow sea area of 300m to 3 ° ~ 16 ° N, while the salinity field has two key zones of shallow sea area of 200m to 3 ° ~ 18 ° N and 24 ° ~ 34 ° 300m shallow waters of N. The interannual variation of the temperature field is related to the ENSO cycle, while the interannual variation of the salinity field is rather complicated.