Scientists in eastern Greenland captured an incredible scene on video: the moment an iceberg measuring 4 miles (6 kilometers) long, separated from the Helheim Glacier and drifted away.
The breaking off took place over the course of 30 minutes and began the night of June 22; the video has condensed the time of the incident to about 90 seconds. - "Catching as it unfolds, we can see its value".
It's hard to get a sense of scale from the video, but the researchers pointed out in a statement that this iceberg would cover most of Lower and Midtown Manhattan.
Greenland's glaciers are more accessible, so Holland and his colleagues have spent a decade collecting data and observing glacier behavior in Greenland - and this time they just happened to be perfectly positioned to witness an iceberg splitting away, research team member Denise Holland, the logistics coordinator for NYU's Environmental Fluid Dynamics Laboratory and NYU Abu Dhabi's Center for Global Sea Level Change, told Live Science. But even though the icebergs tossed into the sea here are contributing to sea level rise, scientists still don't know exactly how such break-ups work.