Polynyas and the Pine Island Glacier, Antarctica.
南极洲的冰穴和松岛冰川。
The polynyas suggest that the warm water exits the cavity beneath the glacier in three locations where the sea ice has melted.
这些个冰穴说明，有三处暖流从冰川下的凹陷处升上来导致海冰融化了。
Bottom water produced by polynyas sinks to the bottom of the sea and drives the conveyor-belt like ocean circulation around the globe.
现在这座冰山浮在一个由海冰环绕的冰间湖上。海低深水就是由这种冰间湖下沉形成，推动洋流像传送带一样在全球循环。
Sea ice abuts the floating glacier tongue except in three places along the front of the glacier.These ice-free areas are called polynyas.
从图上可以看到，海冰（Seaice) 和漂浮着的冰川紧靠着，只有在冰川前边的三处地方例外，这种没有冰的区域称作冰穴（Polynyas）。
Polynyas are routinely present in these three locations when sea ice is present.The polynyas most likely form where warm ocean currents rise toward the ocean surface.
每当海冰出现时，冰穴惯常在这三个地方发生，这是因为冰穴最可能出现在暖流上升向海面的地方。
It is likely that the warm water consistently exits at these locations, but in years that are free of sea ice (like 2011), the polynyas aren't visible and so this cannot be confirmed from images.
有可能暖流一向在这几个地方冒出，但在没有海冰的年份里(例如2011)，并不能看到冰穴，所以不能仅从图片上确认这一点。
It is likely that the warm water consistently exits at these locations, but in years that are free of sea ice (like 2011), the polynyas aren't visible and so this cannot be confirmed from images.
有可能暖流一向在这几个地方冒出，但在没有海冰的年份里(例如2011)，并不能看到冰穴，所以不能仅从图片上确认这一点。
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