新疆玛纳斯河径流波动与北大西洋涛动的关系

对新疆玛纳斯河流量资料、北疆地区温度、降水资料进行整理,分析了其变化的特征和规律,并将其与北大西洋涛动指数进行了对比分析.研究发现,冬季北大西洋涛动指数与玛纳斯河冬季流量呈现显著的正向变化关系,夏季两者的关系则相反.利用交叉小波变换,分别发现了冬、夏季北大西洋涛动指数与玛纳斯河流量变化关系最密切的振荡周期.文中还发现冬、夏季北大西洋涛动指数与北疆温度、降水的变化也存在显著的相关关系.

Linking North Atlantic Oscillation to Stream Discharge of the Manas River, Northwestern China

Based on the stream discharge data (1961-2001) of the Manas River in Xinjiang province and the temperature and precipitation data of nine meteorological stations in northern Xinjiang, the characteristics and laws of stream discharge, temperature, and precipitation were analyzed, which were also been made correlation analysis with North Atlantic Oscillation Index. The study shows that in winter the NAO index has positive relationships with stream discharge, while in summer the relationships are negative, and the NAO index has significant relationships with temperatures and precipitations both in winter and summer. Moreover using cross wavelet analysis, the authors found the closest oscillation periods of the relationships between the NAO index and the stream discharge of the Manas River in winter and in summer, also the characteristics of which in different timescale were analyzed.