A regional coupled sea ice‐ocean model and mooring/shipboard measurements are used to investigate the origins, seasonality, and downstream fate of the Chukchi Slope Current (CSC). Three years (2013–2015) of model integration indicates that, in the mean, the model slope current transports ∼0.45 Sv of Pacific water northwestward along the Chukchi continental slope. Only 62% of this water emanates from Barrow Canyon, while the rest (38%) is fed by a westward jet extending from the southern Beaufort Sea. The jet merges with the outflow from the canyon, forming the CSC. Due to these two distinct origins, the slope current in the model has a double velocity core at times. This is consistent with the double‐core structure of the slope current seen in ship‐based observations. Seasonal changes in the volume, heat, and freshwater transports by the slope current appear to be related to the changes in the upstream flows. A tracer diagnostic in the model suggests that the part of the slope current over the upper continental slope continues westward toward the East Siberian Sea, while the portion of the current overlying deeper isobaths flows northward into the Chukchi Borderland, where it ultimately gets entrained into the Beaufort Gyre. Our study provides a detailed and complete picture of the slope current.

中文翻译：

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使用数值模型和原位数据的楚科奇斜坡电流的起源和命运

区域耦合的海冰-海洋模型和系泊/舰船测量数据用于调查楚科奇斜坡洋流（CSC）的起源，季节性和下游命运。三年（2013-2015年）的模型整合表明，平均而言，模型坡电流沿楚科奇大陆坡向西北输送约0.45 Sv的太平洋水。其中只有62％的水来自巴罗峡谷，而其余的水（38％）由从博福特海南部延伸出来的向西射流供水。射流与从峡谷流出的水汇合，形成CSC。由于这两个不同的原点，模型中的斜率电流有时具有双倍速度核心。这与在舰船观测中看到的斜率电流的双核结构是一致的。体积，热量，斜流引起的淡水输送似乎与上游水流的变化有关。该模型中的示踪剂诊断结果表明，上大陆坡上的部分洋流继续向西流向西伯利亚东海，而当前深层等深岩的一部分向北流入楚科奇边疆，最终被夹带入楚科奇边境。 Beaufort Gyre。我们的研究提供了斜率电流的详细而完整的描述。最终被夹带到Beaufort Gyre中。我们的研究提供了斜率电流的详细而完整的描述。最终被夹带到Beaufort Gyre中。我们的研究提供了斜率电流的详细而完整的描述。