Variability of the Bering Sea circulation in the period 1992–2010
Variability of the Bering Sea circulation in the period 1992–2010
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DOI：
10.1007/s10872-012-0113-0
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发表时间：
2012-06
影响因子：
2.3
通讯作者：
G. Panteleev;M. Yaremchuk;V. Luchin;D. Nechaev;Takashi Kukuchi
中科院分区：
文献类型：
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作者：
G. Panteleev;M. Yaremchuk;V. Luchin;D. Nechaev;Takashi Kukuchi
结合1992-2010年卫星观测到的海平面高度异常与温度和盐度的月气候，估计白令海南部的环流。估计的表层和深层海流与停在1 000米处的表层漂流器和阿尔戈浮标的独立速度观测结果一致。分析表明，1-3-Sv的主要电流与典型的3-7 Sv的年内变化的年际输送变化。在季节尺度上，阿拉斯加流输送与堪察加（0.81），近海峡（0.53）和白令斜坡（0.37）电流有很好的相关性。滞后的相关性揭示了阿拉斯加流，白令海斜坡流和堪察加海流之间的运输滞后的时间逐渐增加，支持的概念，白令海盆地是由阿拉斯加流携带的阿留申弧以南的沃茨和通过近海峡的流量通风。白令海海流与白令海海峡输运的相关性主要受季节循环的影响。在年际时间尺度上，近海峡输送与白令陆坡和阿拉斯加海流之间存在显著的负相关关系。涡动动能与太平洋年代际涛动之间也存在显著的相关关系。
Sea surface height anomalies observed by satellites in 1992–2010 are combined with monthly climatologies of temperature and salinity to estimate circulation in the southern Bering Sea. The estimated surface and deep currents are consistent with independent velocity observations by surface drifters and Argo floats parked at 1,000 m. Analysis reveals 1–3-Sv interannual transport variations of the major currents with typical intra-annual variability of 3–7 Sv. On the seasonal scale, the Alaskan Stream transport is well correlated with the Kamchatka (0.81), Near Strait (0.53) and the Bering Slope (0.37) currents. Lagged correlations reveal a gradual increase of the time the lags between the transports of the Alaskan Stream, the Bering Slope Current and the Kamchatka Current, supporting the concept that the Bering Sea basin is ventilated by the waters carried by the Alaskan Stream south of the Aleutian Arc and by the flow through the Near Strait. Correlations of the Bering Sea currents with the Bering Strait transport are dominated by the seasonal cycle. On the interannual time scale, significant negative correlations are diagnosed between the Near Strait transport and the Bering Slope and Alaskan Stream currents. Substantial correlations are also diagnosed between the eddy kinetic energy and Pacific Decadal Oscillation.