阿拉斯加十大冰河奇迹 冰河埋葬火山树林(图)(7)
![阿拉斯加十大冰河奇迹 冰河埋葬火山树林(图) 阿拉斯加十大冰河奇迹 冰河埋葬火山树林(图)](http://images2.china.com/tech/zh_cn/science/nature/11023062/20090416/15435019_2009041610021312415900.jpg)
7、冰河不适宜徒步旅行
众所周知,冰很容易碎。当冰紧紧地囤积在冰河谷的角落里时,就会不断压实和收缩,从而导致冰破裂。这些冰裂缝造成了令人讨厌的美丽风景。在此1994年拍摄的航片中,这些冰裂缝属于巴格雷(Bagley)冰河谷。冰河学家能从中看到几种冰裂缝,包括直线裂缝和新发生的亚平行裂缝。
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