Abstract

Using the example of analysis of 40-year series of vector fields of ice drift in the Arctic Ocean, the features of calculating the parameters of the linear trend of vector processes are considered. The decomposition of acceleration vectors into orthogonal and collinear components relative to the mean vector makes it possible to estimate an increase or decrease in the average velocity and regularity of change in the angular velocity of direction of the mean vector. The results of the analysis confirm the increase in the velocity modulus in the field of the average drift vector in most of the Arctic Ocean at the same time, seasonal and regional features of the angular velocity variation in the field mean vector drift. It is noted that in the winter season, the linear trend explains more than half the variance in annual drift variability in the Fram Strait, on the southern periphery of the anticyclonic gyre in the Beaufort Sea, in the Kara Sea, and in the Baffin Sea.

中文翻译：

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北冰洋海冰漂移场的线性趋势

摘要

以北冰洋冰漂移40年系列矢量场分析为例，考虑了矢量过程线性趋势参数计算的特点。将加速度矢量分解为相对于平均矢量的正交和共线分量使得可以估计平均速度的增加或减少以及平均矢量的方向角速度的变化规律。分析结果证实了北冰洋大部分地区平均漂移矢量场中速度模量的增加，同时场平均矢量漂移角速度变化具有季节和区域特征。值得一提的是，在冬季，