{
"id": 4328,
"url": "https://svs.gsfc.nasa.gov/4328/",
"page_type": "Visualization",
"title": "Greenland's Glaciers as seen by RadarSat",
"description": "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. || Helheim_radarsat_4k.0800_print.jpg (1024x576) [242.6 KB] || Helheim_radarsat_4k.0800_searchweb.png (320x180) [121.8 KB] || Helheim_radarsat_4k.0800_web.png (320x180) [121.8 KB] || Helheim_radarsat_4k.0800_thm.png (80x40) [7.6 KB] || Helheim_radarsat_4k_1080p30.mp4 (1920x1080) [84.5 MB] || Helheim_radarsat_4k_720p30.mp4 (1280x720) [43.3 MB] || Helheim_radarsat_4k_2160p30.webm (3840x2160) [16.2 MB] || frames/3840x2160_16x9_30p/Helheim/ (3840x2160) [256.0 KB] || Helheim_radarsat_4k_2160p30.mp4 (3840x2160) [225.6 MB] || ",
"release_date": "2015-08-25T00:00:00-04:00",
"update_date": "2023-11-14T00:06:41.472131-05:00",
"main_image": {
"id": 441733,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k.0800_print.jpg",
"filename": "Helheim_radarsat_4k.0800_print.jpg",
"media_type": "Image",
"alt_text": "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.",
"width": 1024,
"height": 576,
"pixels": 589824
},
"main_video": {
"id": 441736,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k_1080p30.mp4",
"filename": "Helheim_radarsat_4k_1080p30.mp4",
"media_type": "Movie",
"alt_text": "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.",
"width": 1920,
"height": 1080,
"pixels": 2073600
},
"progress": "Complete",
"media_groups": [
{
"id": 337021,
"url": "https://svs.gsfc.nasa.gov/4328/#media_group_337021",
"widget": "Video player",
"title": "",
"caption": "",
"description": "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 2013
This video is also available on our YouTube channel.
",
"items": [
{
"id": 278676,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441733,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k.0800_print.jpg",
"filename": "Helheim_radarsat_4k.0800_print.jpg",
"media_type": "Image",
"alt_text": "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.",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 278677,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441732,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k.0800_searchweb.png",
"filename": "Helheim_radarsat_4k.0800_searchweb.png",
"media_type": "Image",
"alt_text": "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 2013",
"width": 180,
"height": 320,
"pixels": 57600
}
},
{
"id": 278678,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441731,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k.0800_web.png",
"filename": "Helheim_radarsat_4k.0800_web.png",
"media_type": "Image",
"alt_text": "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.",
"width": 320,
"height": 180,
"pixels": 57600
}
},
{
"id": 278679,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441730,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k.0800_thm.png",
"filename": "Helheim_radarsat_4k.0800_thm.png",
"media_type": "Image",
"alt_text": "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.",
"width": 80,
"height": 40,
"pixels": 3200
}
},
{
"id": 278672,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441736,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k_1080p30.mp4",
"filename": "Helheim_radarsat_4k_1080p30.mp4",
"media_type": "Movie",
"alt_text": "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.",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 278673,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441737,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k_720p30.mp4",
"filename": "Helheim_radarsat_4k_720p30.mp4",
"media_type": "Movie",
"alt_text": "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.",
"width": 1280,
"height": 720,
"pixels": 921600
}
},
{
"id": 278674,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441735,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k_2160p30.webm",
"filename": "Helheim_radarsat_4k_2160p30.webm",
"media_type": "Movie",
"alt_text": "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.",
"width": 3840,
"height": 2160,
"pixels": 8294400
}
},
{
"id": 278675,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441734,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/frames/3840x2160_16x9_30p/Helheim/",
"filename": "Helheim",
"media_type": "Frames",
"alt_text": "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.",
"width": 3840,
"height": 2160,
"pixels": 8294400
}
},
{
"id": 278680,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441738,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Helheim_radarsat_4k_2160p30.mp4",
"filename": "Helheim_radarsat_4k_2160p30.mp4",
"media_type": "Movie",
"alt_text": "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.",
"width": 3840,
"height": 2160,
"pixels": 8294400
}
}
],
"extra_data": {}
},
{
"id": 337020,
"url": "https://svs.gsfc.nasa.gov/4328/#media_group_337020",
"widget": "Basic text with HTML",
"title": "",
"caption": "",
"description": "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.",
"items": [],
"extra_data": {}
},
{
"id": 337022,
"url": "https://svs.gsfc.nasa.gov/4328/#media_group_337022",
"widget": "Video player",
"title": "",
"caption": "",
"description": "An animation of flows showing the drainage area of the Petermann glacier",
"items": [
{
"id": 278686,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441741,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Peterman_0800_print.jpg",
"filename": "Peterman_0800_print.jpg",
"media_type": "Image",
"alt_text": "An animation of flows showing the drainage area of the Petermann glacier",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 278681,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441739,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Peterman_0000_1080p30.mp4",
"filename": "Peterman_0000_1080p30.mp4",
"media_type": "Movie",
"alt_text": "An animation of flows showing the drainage area of the Petermann glacier",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 278682,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441744,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Peterman_0000_720p30.mp4",
"filename": "Peterman_0000_720p30.mp4",
"media_type": "Movie",
"alt_text": "An animation of flows showing the drainage area of the Petermann glacier",
"width": 1280,
"height": 720,
"pixels": 921600
}
},
{
"id": 278684,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441743,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Peterman_0000_1080p30.webm",
"filename": "Peterman_0000_1080p30.webm",
"media_type": "Movie",
"alt_text": "An animation of flows showing the drainage area of the Petermann glacier",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 278683,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441742,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/Peterman_0000_2160p30.mp4",
"filename": "Peterman_0000_2160p30.mp4",
"media_type": "Movie",
"alt_text": "An animation of flows showing the drainage area of the Petermann glacier",
"width": 3840,
"height": 2160,
"pixels": 8294400
}
},
{
"id": 278685,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441740,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/frames/3840x2160_16x9_30p/Petermann/",
"filename": "Petermann",
"media_type": "Frames",
"alt_text": "An animation of flows showing the drainage area of the Petermann glacier",
"width": 3840,
"height": 2160,
"pixels": 8294400
}
}
],
"extra_data": {}
},
{
"id": 337023,
"url": "https://svs.gsfc.nasa.gov/4328/#media_group_337023",
"widget": "Video player",
"title": "",
"caption": "",
"description": "An animation showing the region around Northeast Greenland along with the change in the calving front of the Zackary Istrom glacier from 2000 to 2013",
"items": [
{
"id": 278692,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441746,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/zackary_4k.1749_print.jpg",
"filename": "zackary_4k.1749_print.jpg",
"media_type": "Image",
"alt_text": "An animation showing the region around Northeast Greenland along with the change in the calving front of the Zackary Istrom glacier from 2000 to 2013",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 278687,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441748,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/zackary_4k_1080p30.mp4",
"filename": "zackary_4k_1080p30.mp4",
"media_type": "Movie",
"alt_text": "An animation showing the region around Northeast Greenland along with the change in the calving front of the Zackary Istrom glacier from 2000 to 2013",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 278688,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441747,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/zackary_4k_720p30.mp4",
"filename": "zackary_4k_720p30.mp4",
"media_type": "Movie",
"alt_text": "An animation showing the region around Northeast Greenland along with the change in the calving front of the Zackary Istrom glacier from 2000 to 2013",
"width": 1280,
"height": 720,
"pixels": 921600
}
},
{
"id": 278690,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441750,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/zackary_4k_1080p30.webm",
"filename": "zackary_4k_1080p30.webm",
"media_type": "Movie",
"alt_text": "An animation showing the region around Northeast Greenland along with the change in the calving front of the Zackary Istrom glacier from 2000 to 2013",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 278689,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441749,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/zackary_4k_2160p30.mp4",
"filename": "zackary_4k_2160p30.mp4",
"media_type": "Movie",
"alt_text": "An animation showing the region around Northeast Greenland along with the change in the calving front of the Zackary Istrom glacier from 2000 to 2013",
"width": 3840,
"height": 2160,
"pixels": 8294400
}
},
{
"id": 278691,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 441745,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004300/a004328/frames/3840x2160_16x9_30p/ZackaryIstrom/",
"filename": "ZackaryIstrom",
"media_type": "Frames",
"alt_text": "An animation showing the region around Northeast Greenland along with the change in the calving front of the Zackary Istrom glacier from 2000 to 2013",
"width": 3840,
"height": 2160,
"pixels": 8294400
}
}
],
"extra_data": {}
}
],
"studio": "SVS",
"funding_sources": [
"ESE"
],
"credits": [
{
"role": "Visualizer",
"people": [
{
"name": "Cindy Starr",
"employer": "Global Science and Technology, Inc."
},
{
"name": "Greg Shirah",
"employer": "NASA/GSFC"
}
]
},
{
"role": "Scientist",
"people": [
{
"name": "Ian Howat",
"employer": "Ohio State University"
},
{
"name": "Ian Joughin",
"employer": "Polar Science Center, University of Washington"
},
{
"name": "Twila Moon",
"employer": "National Snow & Ice Data Center, CIRES, University of Colorado, Boulder"
}
]
},
{
"role": "Producer",
"people": [
{
"name": "Jefferson Beck",
"employer": "USRA"
}
]
}
],
"missions": [],
"series": [],
"tapes": [],
"papers": [],
"datasets": [
{
"name": "",
"common_name": "",
"platform": "RADARSAT-1",
"sensor": "SAR",
"type": "Other",
"organizations": [],
"description": "",
"credit": "Additional credit goes to Canadian Space Agency, RADARSAT International Inc.",
"url": "",
"date_range": "2000 - 2013"
},
{
"name": "Greenland Mapping Project (GIMP) Digital Elevation Model",
"common_name": "GIMP Greenland DEM",
"platform": null,
"sensor": null,
"type": "Data Compilation",
"organizations": [],
"description": "",
"credit": "",
"url": "",
"date_range": "2003 - 2009"
}
],
"nasa_science_categories": [
"Earth"
],
"keywords": [
"Climate Variability and Change",
"Cryosphere",
"Earth Science",
"Glaciers/Ice Sheets",
"Greenland",
"HDTV",
"Hydrosphere",
"Hyperwall",
"Ice Sheets",
"Location",
"Terrestrial Hydrosphere"
],
"recommended_pages": [],
"related": [
{
"id": 11988,
"url": "https://svs.gsfc.nasa.gov/11988/",
"page_type": "Produced Video",
"title": "Instagram: NASA Hosts TV Program On Sea Level Rise",
"description": "At 1 p.m. EDT (10 a.m. PDT) on Friday, Aug. 28, NASA's Goddard Space Flight Center in Greenbelt, Maryland, will host a live TV program about agency research into how and why the massive Greenland ice sheet is changing. The event features scientists actively conducting field work in Greenland, along with extensive video footage of their work performed over this summer.Panelists include: Tom Wagner (cryosphere program scientist with NASA's Earth Science Division), Laurence Smith (chair of the University of California, Los Angeles Department of Geography), Mike Bevis (professor of geodynamics at Ohio State University in Columbus), Sophie Nowicki (physical scientist at Goddard), and Josh Willis (JPL). The Friday program will air live on NASA TV and stream online at: https://www.nasa.gov/nasatv. To ask questions via social media during the televised event, use the hashtag #askNASA. || ",
"release_date": "2015-08-27T14:00:00-04:00",
"update_date": "2023-05-03T13:49:25.649205-04:00",
"main_image": {
"id": 440509,
"url": "https://svs.gsfc.nasa.gov/vis/a010000/a011900/a011988/GL_INST_2_print.jpg",
"filename": "GL_INST_2_print.jpg",
"media_type": "Image",
"alt_text": "For complete transcript, click here.",
"width": 1024,
"height": 1024,
"pixels": 1048576
}
}
],
"sources": [],
"products": [
{
"id": 12509,
"url": "https://svs.gsfc.nasa.gov/12509/",
"page_type": "Produced Video",
"title": "Water in Helheim Glacier Makes Its Way to the Ocean",
"description": "New NASA research found that large crevasses provide aquifer water upstream of Greenland's Helheim Glacier with a clear escape to the ocean. This discovery helps confirm that the water, which is held in a layer of crunchy, granular snow called firn, contributes to sea level rise. || ",
"release_date": "2017-02-15T11:00:00-05:00",
"update_date": "2023-05-03T13:47:56.191015-04:00",
"main_image": {
"id": 416375,
"url": "https://svs.gsfc.nasa.gov/vis/a010000/a012500/a012509/LARGE_MP4-12509_firnaquifer_large.00188_print.jpg",
"filename": "LARGE_MP4-12509_firnaquifer_large.00188_print.jpg",
"media_type": "Image",
"alt_text": "Music credit: Dark Clouds by Anders Paul Niska [STIM] and Klas Johan Wahl [STIM]Complete transcript available.",
"width": 1024,
"height": 576,
"pixels": 589824
}
}
],
"newer_versions": [],
"older_versions": [],
"alternate_versions": []
}