Depending on the stresses on the glacier, the ice crystal within it reorganized.(根据冰川上的压力，其中的冰晶会重新组织。)
Crevasses can form in this upper layers of the glacier.(冰川的上层会形成裂缝。)
The first type of glacier flow is called: basal slip.(第一种冰川流动被称为：基底滑动。)
Basal slip or sliding as it's often called, basically refers to the slipping or sliding of a glacier across bedrock, actually across a thin layer of water on top of the bedrock.(底部滑移，也通常被称为滑动，大致指的是冰川在基岩上的滑动，实际上是在基岩上部的一层薄薄的水上的滑动。)
A liquid layer forms at the base of the glacier.(在冰川的底部形成了一层液体。)
Friction between the glacier and bedrock is reduced.(冰川和基岩之间的摩擦减少了。)
Surplus snowfall is essential for a glacier to develop.(过剩的降雪是冰川形成的必要条件。)
Now, speeds like that are pretty unusual, hundreds of times faster than the regular movement of glaciers, but you can actually see glacier move during these surges, though it is rare.(现在，这样的速度是很不寻常的，比冰川的正常移动速度快几百倍，但是你可以看到冰川在这些涌动中移动，虽然很少见。)
Dog Sled Camp atop Juneau Glacier in Alaska.(狗雪橇营安置在阿拉斯加的朱诺冰川的顶上。)
The forward movement, the melting at the base of the glacier where it meets the ocean, and waves and tidal action cause blocks of ice to break off and float out to sea.(冰川的向前移动，其底部与海洋接触处的融化，还有波浪和潮汐运动，导致冰块断裂，漂浮到海上。)
