Wintertime Arctic Oscillation and Formation of River Spring Floods in the Barents Sea Basin
Wintertime Arctic Oscillation and Formation of River Spring Floods in the Barents Sea Basin
复制标题
冬季北极涛动与巴伦支海盆地河流春季洪水的形成
DOI：
10.3103/s106837391903004x
复制
发表时间：
2019
影响因子：
0.7
通讯作者：
O. Gorelits
中科院分区：
文献类型：
--
作者：
V. Kryjov;O. Gorelits
冬季（12月至2月）北极涛动（AO）对流入白色海和巴伦支海的俄罗斯北部欧洲河流奥涅加河、北方多瑙河、梅津河和伯朝拉河春季洪水影响的研究结果。分析了1930-2014年根据冬季AO指数在上四分位数上方和下四分位数下方构建的河流水排放量的合成。在巴伦支海流域和冬季AO的河流春季洪水的日期和强度之间的统计显着的关系。对于所有分析的河流，4月水径流之前的AO正相的冬季显着增加，超过两倍以上的AO负相的冬季之前，与显着的径流增加持续到5月的Mezen'和Pechora河。较早和更强烈的洪水是由较早的春季变暖后，冬季的正AO阶段和更大的积雪在这些冬季相比，负AO阶段的冬季。
Results from the research on the influence of the wintertime (December-February) Arctic Oscillation (AO) on the spring floods of the North European Russia rivers of Onega, Northern Dvina, Mezen’, and Pechora flowing into the White and Barents seas are presented. Composites of the river water discharges from 1930–2014 constructed in accordance with the wintertime AO index above the upper and below the lower quartiles are analyzed. Statistically significant relationships between the dates and intensity of the river spring floods in the Barents Sea basin and the wintertime AO are shown. For all the analyzed rivers, April water runoff preceded by the winters of the AO positive phase significantly increases and by more than twice exceeds that preceded by the winters of the AO negative phase, with the significant runoff increase persisting into May for the Mezen’ and Pechora rivers. The earlier and more intensive floods are caused by the earlier spring warming after the winters of the positive AO phase and larger snow accumulation during these winters as compared to the winters of the negative AO phase.