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48 Years of Alaska's Glaciers

New time-lapse videos of Earth’s glaciers and ice sheets as seen from space – spanning nearly 50 years – are providing scientists with new insights into how the planet’s frozen regions are changing. Using images from the NASA-USGS Landsat program dating back to 1972 and continuing through 2019, glaciologist Mark Fahnestock of the University of Alaska Fairbanks, has stitched together six-second time-lapses of every glacier in Alaska and the Yukon. The videos clearly illustrate what’s happening to Alaska’s glaciers in a warming climate. Some show surges that pause for a few years, or lakes forming where ice used to be, or even the debris from landslides making its way to the sea. Other glaciers show patterns that give scientists hints of what drives glacier changes. Read more: https://www.nasa.gov/feature/goddard/... Music credits: Inducing Waves, composer Ben Niblett [PRS] Jon Cotton [PRS]; Critical Pathway, composer Rik Carter [PRS]; Emerging Discovery, composer Rik Carter [PRS], all published by Atmosphere Music Ltd [PRS]. Credit: NASA's Goddard Space Flight Center Time-lapse videos courtesy of Mark Fahnestock, Geophysical Institute, University of Alaska Fairbanks Matthew R. Radcliff (USRA): Producer Kate Ramsayer (Telophase): Writer This video is public domain and along with other supporting visualizations can be downloaded from NASA Goddard's Scientific Visualization Studio at: https://svs.gsfc.nasa.gov/13492 If you liked this video, subscribe to the NASA Goddard YouTube channel:    / nasagoddard   Follow NASA’s Goddard Space Flight Center · Instagram   / nasagoddard   · Twitter   / nasagoddard   · Twitter   / nasagoddardpix   · Facebook:   / nasagoddard   · Flickr http://www.flickr.com/photos/gsfc