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Skerrylike mirages and the discovery of Greenland

机译：骷髅般的海市ages楼和格陵兰的发现

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摘要

The Norse discovery of Greenland is associated with the sighting of low barren islands called Gunnbjorn's Skerries, which have never been satisfactorily identified. Here the historical references that connect the skerries to Greenland are reviewed. A mirage of the Greenland coast, arising specifically from optical ducting under a sharp temperature inversion, is used to explain the vision of skerries seen by the Norse mariners. Images from both ducting and uniform inversions are calculated. Under the assumption of a clean Rayleigh atmosphere, sufficient visibility remains to see the skerry image at a distance of 220 km. There is significant circumstantial evidence to indicate that the Norse were familiar with the skerrylike mirage and that they used it to discover new lands.
机译：格陵兰岛的北欧发现与发现被称为“冈比约恩的礁”的低贫瘠岛屿有关，而从未被令人满意地发现过。这里回顾了将礁岩与格陵兰联系起来的历史参考文献。格陵兰海岸的海市rage楼，特别是由于在急剧的温度反转下的光导管所引起的海市rage楼，被用来解释北欧水手看到的礁岩的景象。计算了来自管道和均匀反演的图像。在干净的瑞利大气层的假设下，仍然有足够的能见度，可以在220 km的距离看到该图像。有大量的间接证据表明，北欧人很熟悉像斯克里奇的海市rage楼，他们用它来发现新的土地。

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