Live Science Plus
You are now subscribed
Your newsletter sign-up was successful
Want to add more newsletters?
Delivered Daily
Daily Newsletter
Sign up for the latest discoveries, groundbreaking research and fascinating breakthroughs that impact you and the wider world direct to your inbox.
Once a week
Life's Little Mysteries
Feed your curiosity with an exclusive mystery every week, solved with science and delivered direct to your inbox before it's seen anywhere else.
Once a week
How It Works
Sign up to our free science & technology newsletter for your weekly fix of fascinating articles, quick quizzes, amazing images, and more
Delivered daily
Space.com Newsletter
Breaking space news, the latest updates on rocket launches, skywatching events and more!
Once a month
Watch This Space
Sign up to our monthly entertainment newsletter to keep up with all our coverage of the latest sci-fi and space movies, tv shows, games and books.
Once a week
Night Sky This Week
Discover this week's must-see night sky events, moon phases, and stunning astrophotos. Sign up for our skywatching newsletter and explore the universe with us!
Join the club
Get full access to premium articles, exclusive features and a growing list of member rewards.
Recent history
In recent years, Greenland's ice loss has accelerated, raising fears of irreversible melting and rapid sea-level rise. Now, scientists say its time to revise dire predictions based on the last 10 years of glacial retreat. Here, GPS units are being deployed on fast flowing Greenland outlet glaciers in August 2011.
Losing a Chunk of Ice
Greenland's Jakobshavn Isbrae glacier, which drains some 6.5 percent of the Greenland ice sheet, is losing ice. At some time between May 9, 2014, when the Landsat 8 satellite acquired this image (left), and June 1, 2014, when it acquired the right image, the glacier shed a significant amount of ice. Some estimates put the loss at between 5 and 10 square kilometers (1.9 and 3.8 square miles), a couple hundred times thicker than sea ice, according to the Arctic Sea Ice blog.
Tracking the ice
GPS units being deployed on fast flowing Greenland outlet glaciers, Store Glacier and Kangiata Nunata Sermia in west Greenland, in August 2011. These units store glacier speed as they move together with the ice surface.
Gathering the data
GPS unit being retrieved after one year. Stored data in the unit show how fast the ice has moved during the year and can be used to validate and calibrate scientists' numerical model.
Data shows the impact
Deployment of a transmitting GPS unit on Petermann glacier, in May 2012. Data show how the glacier responded to warm summer seasons and to large calving events. This information helps scientists to validate their model results as well as to improve the model.
Kangiata Sermia glacier calving
Calving front of Kangiata Nunata Sermia glacier, one of the large fast flowing outlet glaciers in west Greenland.
New calving
Another image showing the calving front of Kangiata Nunata Sermia glacier.
Calving in 2012
Calving front of Kangiata Nunata Sermia, in August 2012.
Rink Glacier calving
Frequent calving event in front of Rink Glacier in west Greenland.
Measuring the environment
Scientists on the sailing vessel Gambo are measuring water temperature and salinity in the fjord in front of Store Glacier in west Greenland. These data are used to estimate the amount of submarine melt at the glacier front when the warm currents enter the fjord.
Calving created
Water-filled surface crevasses on Greenland outlet glaciers. Every summer surface meltwater enters in the surface crevasses and forces the crevasses to penetrate deeper, which eventually results in higher calving rate.
