Water in Helheim Glacier Makes Its Way to the Ocean

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    ID: 11862 Produced Video

    Operation IceBridge Arctic 2015 video series

    April 22nd, 2015
    (updated May 3rd, 2023)

    For more IceBridge videos NASA’s Operation IceBridge has wrapped up its 2015 Arctic field campaign after covering a vast expanse of science targets during 33 different flights over land ice, sea ice, and glaciers. The airborne campaign flies over the Arctic and Antarctic every year measuring changes in the ice with instruments like radar and lasers. For more on IceBridge, visit NASA's IceBridge webpage. || The Helheim ExperienceTake a few minutes to sit back, put on your headphones, go full screen, and enjoy a birds-eye view of a vast expanse of Greenland's mountainous region near Helheim Glacier in eastern Greenland aboard a NASA C-130. Music courtesy Moby. ||

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    ID: 4328 Visualization

    Greenland's Glaciers as seen by RadarSat

    Aug. 25th, 2015
    (updated Aug. 25th, 2023)

    An animation up the Greenland's Sermilik Fjord to the calving front of the Helheim Glacier, showing the glacier front's change between 2000 to 2013This video is also available on our YouTube channel. || This animation is based on 30-meter topography data for Greenland along with an ocean and an ice sheet mask provided by the Greenland Ice Mapping Project (GIMP) at Ohio State. Each of these datasets consists of a 6 x 6 array of 124 megapixel tiles. The surface texture is derived from seven sets of 20-meter Radarsat reflectance data from the Canadian Space Agency, mosaicked at the University of Washington's Applied Physics Lab and accurately registered to the topography data. Each of six tile sets represents data for one year between 2000 and 2013, while the final one is a composite of the six years that has most areas of missing data resolved. Each of these tile sets consist of a 5 x 5 array of 421 megapixel tiles. The false color of the surface is derived as follows. Three different color scales are applied to the floating point Radarsat reflectance data based on their relationship within the GIMP masks. Areas within the ice sheet mask are mapped to a color ramp from white (high) to grey (low). Areas within the land region of the ocean mask but not in the ice sheet mask are similarly mapped to a color ramp of light to dark tan. The area indicating ocean is mapped to blue. ||

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