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Yukon River hydrological and climatic changes, 1977-2006

机译:育空河水文和气候变化,1977-2006年

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This paper analyses long-term hydrology and climate data over the Yukon River basin. It uses regression analysis to define the relationship between the climate and discharge data over the basin. Discharge at the outlet of the basin shows low runoff in the cold season (November to April), with small variations. Flow is high (28 483-177 000 ft~3/s; 807-5012 m~3/s) with high fluctuations in the warm season (May to October). The discharge in May has a positive trend (177 000 ft~3/s; 5012 m~3/s). The mean annual flow is about 227 912 ft~3/s (6454 m~3/s), with high fluctuations; it has increased by 18 213 ft~3/s (or 8%) during the study period. Basin air temperature from 1977 to 2006 increased by 3.9°F (2.2℃) in June and decreased by 10.5°F (5.8℃) in January. Basin precipitation has negative trend in June (0.6 inch; 15.2 mm) with a confidence over 93%. Regression analysis shows a strong and positive correlation between temperature and discharge in May, and a strong and negative correlation between May temperature and June discharge. Precipitation in August and September has strong and positive correlations with basin discharge in September and October.
机译:本文分析了育空河流域的长期水文和气候数据。它使用回归分析来定义流域气候和排放数据之间的关系。在寒冷季节(11月至4月),流域出口的流量显示出较低的径流量,且变化很小。流量高(28 483-177 000 ft〜3 / s; 807-5012 m〜3 / s),在暖季(5月至10月)波动很大。五月份的排放量呈上升趋势(177 000 ft〜3 / s; 5012 m〜3 / s)。年平均流量约为227912 ft〜3 / s(6454 m〜3 / s),波动较大;在研究期间,它增加了18213 ft〜3 / s(或8%)。从1977年到2006年,6月盆地的气温上升了3.9°F(2.2℃),1月下降了10.5°F(5.8℃)。 6月盆地降水呈负趋势(0.6英寸; 15.2毫米),置信度超过93%。回归分析显示,5月温度和流量之间呈强正相关,5月温度与6月流量之间呈强负相关。 8月和9月的降水与9月和10月的流域排放有强烈的正相关关系。

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