旋涡可能是被来自相反方向的风塑造成的——北风将海冰推向南部，西南风则将海冰推向东北部。
The eddies may result from opposing winds—winds from the north pushing the ice southward, and winds from the southwest pushing the ice toward the northeast.
是南风还是北风？
可通过调整，较暖的南风以千米每小时作单位，较冷的北风则以英里每小时作单位，来使方程适应不同的天气。
It can be altered to allow for warmer southerly winds and colder northerly winds by using kilometers per hour for colder winds and miles per hour for warmer ones.
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