长江沱沱河源区水温变化规律分析
Analysis of Water Temperature Variation in Tuotuohe Area in Source Regions of the Yangtze River
DOI: 10.12677/JWRR.2018.72013, PDF,    国家科技经费支持
作者: 熊 明, 邹 珊：长江水利委员会水文局，湖北 武汉；李其江：青海省水文水资源勘测局，青海 西宁
关键词: 水温；河源区；变化趋势；周期分析；长江；Temperature； Source Region； Change Trend； Periodic Analysis； The Yangtze River
摘要: 本文基于长江源沱沱河水文站1977~2015年月实测水温资料，对高于0℃的5~10月水温年际变化特征进行了分析。结果表明：沱沱河水文站高于0℃以上累积水温增高趋势明显，2011~2015年较1977~1980年年平均累积值升高189.6℃，日平均升高1.2℃，但每年水温高于0℃的天数却无明显变化趋势，平均每年161天；5~9月水温均有明显的升温，2011~2015年较1977~1980年分别升高0.6℃、1.6℃、1.7℃、1.1℃、1.0℃；各月水温趋势突变点发生在2005~2007年之间，多数月份发生在2005年和2006年。6~9月存在明显的28年时间尺度的主周期，5月和10月因水温较低且接近0℃，周期特性不明显。
Abstract: Based on the monthly measured water temperature data from 1977 to 2015 at Tuotuohe hydrological station in source region of the Yangtze River, the inter-annual variability of water temperature from May to October above 0˚C was analyzed. The results show that the cumulative water temperature above 0˚C increased obviously at Tuotuohe hydrological station. The average cumulative value increased from 189.6˚C over the period of 1977 to 1980, with an average daily temperature increase of 1.2˚C from 2011 to 2015. However, the number of days each year when the water temperature above 0˚C shows no significant change trend, with an average of 161 days per year. Water temperature increases significantly from May to September, increasing by 0.6˚C, 1.6˚C, 1.7˚C, 1.1˚C and 1.0˚C respectively from 2011 to 2015. The mutation of temperature change in each month occurred between 2005 and 2007, most of them in 2005 and 2006. There is a clear 28-year time-scale change cycle from June to September. While in May and October, the periodic characteristics are not obvious due to the low water temperature near 0˚C.
文章引用：熊明, 李其江, 邹珊. 长江沱沱河源区水温变化规律分析[J]. 水资源研究, 2018, 7(2): 117-125. https://doi.org/10.12677/JWRR.2018.72013

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