Watch an Icelandic glacier disintegrate

"The sound of running water is not something you used to hear on an ice cap." Arctic explorer Will Steger said this last weekend, during a presentation at the Science Museum of Minnesota. Steger was showing video clips from some of his travels, and he had to speak rather loudly. Otherwise, we couldn't have heard him over the sound of running water, flowing over, under, and through an ice cap.

Steger started traveling to the Arctic 18 years ago, and he's seen the region change dramatically over time. Today, he says, it's impossible to dogsled to the North Pole without bringing some kind of floatation device. You just can't rely any longer on the ice being solid all the way up.

But one of the most disturbing things Steger showed us was how global warming disintegrates glaciers. This isn't just about the melting that happens on top of the ice. It's really about what's happening below. Glaciers aren't a solid mass. Because they move, they're riddled with cracks and crevasses. When snow and ice on top of the glacier turns into water, there are plenty of ways for that water to seep down to the bottom of the glacier. Once there, the water acts as a lubricant. It makes it easier for the front of the glacier to break off and melt away into nothing.

You can watch that process happen in real time, as meltwater helps to break apart a glacier in a time-lapse video filmed between March 27, 2007 and March 4, 2012. About halfway though, the video reverses. As the glacier "rebuilds" itself, you really get the full impact of what's happened, and what is still happening, to our Arctic ice sheets.

Video Link

See more videos of melting ice filmed by the Extreme Ice Survey.

Learn more about the global outlook for ice and snow.

Learn more about how climate change is affecting the Arctic at the Will Steger Foundation website.

• [Lindz]

  Sorry the creator of this video has not given you permissions to embed it on this domain. this is a vimeo plus feature

• [millie fink]

  But, but, April snowstorms!!!

• [Gern Blanston]

  Screw embedding permission. I just had to make it more dramatic.
  http://www.youtube.com/watch?v=dvUF07dpZjE

• [penguinchris]

  This is awesome… I saw part of a Attenborough documentary last week that had epic time-lapses of glaciers, but to me (a geologist who has done research on how rivers shape landscapes) this was a lot more interesting because it shows the dynamic landscape below the glacier.

• [TharkLord]

  I got this weird feeling watching this that our planet was suffering from osteoporosis.

• [Simon]

  “You can watch that process happen in real time… in a time-lapse video”
  *grin*

  Sorry, couldn’t resist. Amazing video, though – thank you for linking.