Yukon River Basin long‐term (1977–2006) hydrologic and climatic analysis
Yukon River Basin long‐term (1977–2006) hydrologic and climatic analysis
复制标题
育空河流域长期（1977-2006）水文和气候分析
DOI：
10.1002/hyp.9282
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发表时间：
2013
影响因子：
3.2
通讯作者：
D. Kane
中科院分区：
文献类型：
--
作者：
Shaoqing Ge;Daqing Yang;D. Kane
在这项研究中，长期排放数据和气候记录，如1977-2006年的温度和降水，已被用来定义流域气候和水文制度和变化。在育空地区流域的四个主要测量站（Eagle、Stevens Village、Nenana和Pilot Station）进行的流量分析表明，冷季（11月至4月）的径流量较低，变化较小，而暖季（5月至10月）的径流量较高（28 500-177 000 ft 3/s; 810-5000 m3/s），波动较大。Stevens Village站位于流域上游，与流域出口附近的水流变化相似。流量在5月（61 074 ft 3/s; 1729 m3/s）和9月（23 325 ft 3/s; 660 m3/s）增加;在7月（35 174 ft 3/s; 996 m3/s）和8月（6809 ft 3/s; 193 m3/s）减少。5月份，先导站（流域出口附近）的排放量呈上升趋势（177 000 ft 3/s; 5010 m3/s）。日流量分析显示，暖季波动较大，冷季流量非常低;引航站日流量的10年平均分析显示，峰值略有增加，其时间提前。年平均流量为227 900 ft 3/s（6450 m3/s），年际波动较大，在1977-2006年期间增加了18 200 ft 3/s（或8%; 520 m3/s）。从1977年到2006年，6月盆地气温上升了3.9 °F（2.2 °C），1月下降了10.5 °F（5.8 °C）。4月气温与5月流量之间存在较强的正相关关系，而8月气温与9月流量之间存在较强的负相关关系。1977-2006年期间，6月降水量呈负趋势（0.6英寸; 15 mm），置信度超过93%。8、9月降水量与流域出口9、10月流量呈强正相关关系，其他月份降水量与流量相关性较弱。1977-2006年平均年降水量增加了1.1英寸。(or 8%; 28 mm），这有助于研究期间年流量的增加。版权所有© 2012约翰威利父子有限公司.
In this study, long‐term discharge data and climate records, such as temperature and precipitation during 1977–2006, have been used to define basin climatic and hydrologic regimes and changes. Discharge analyses at four key gauging stations (Eagle, Stevens Village, Nenana, and Pilot Station) in the Yukon River Basin show that the runoff in the cold season (November to April) is low with small variations, whereas it is high (28 500–177 000 ft3/s; 810–5000 m3/s) with high fluctuations in the warm season (May to October). The Stevens Village Station is in the upper basin and has similar changes with the flow near basin outlet. Flow increases in May (61 074 ft3/s; 1729 m3/s) and September (23 325 ft3/s; 660 m3/s); and decreases in July (35 174 ft3/s; 996 m3/s) and August (6809 ft3/s; 193 m3/s). Discharge in May at the Pilot Station (near the basin outlet) shows a positive trend (177 000 ft3/s; 5010 m3/s). Daily flow analyses show high fluctuation during the warm season and very low flow during the cold season; the 10‐year average analyses of daily flow at Pilot Station show a small increase in the peak and its timing shifted to a little earlier date. The annual flow, average of 227 900 ft3/s (6450 m3/s) with high inter‐annual fluctuations, has increased by 18 200 ft3/s (or 8%; 520 m3/s) during 1977–2006. From 1977 to 2006, basin air temperature in June has increased by 3.9 °F (2.2 °C) and decreased by 10.5 °F (5.8 °C) in January. A strong and positive correlation exists between air temperature in April and discharge in May, whereas a strong and negative correlation relates August temperature and September discharge. Negative trend during 1977–2006 is observed for precipitation in June (0.6 in.; 15 mm) with a confidence over 93%. Precipitation in August and September has strong and positive correlations with discharge in September and October at basin outlet; the precipitation in other months has weak correlation with the discharge. The mean annual precipitation during 1977–2006 increased by 1.1 in. (or 8%; 28 mm), which contributes to the annual flow increase during the study period. Copyright © 2012 John Wiley & Sons, Ltd.