{
    "id": 3403,
    "url": "https://svs.gsfc.nasa.gov/3403/",
    "page_type": "Visualization",
    "title": "Antarctic Plumbing: Lake Englehardt's Subglacial Hydraulic System",
    "description": "ICESat satellite laser altimeter elevation profiles from 2003-2006 collected over West Antarctica reveal numerous regions of temporally varying elevation. MODIS satellite imagery over roughly the same time period collaborates where these subglacial fluctuations have occurred. These observations have led scientists to conclude that subglacial water movement is happening in this lake region, revealing a widespread, dynamic subglacial water system that could provide important insights into ice flow and the mass balance of Antarctica's ice. || ",
    "release_date": "2007-02-19T00:00:00-05:00",
    "update_date": "2023-05-03T13:55:44.745640-04:00",
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            "description": "ICESat elevation data taken on October 24, 2003 is shown in orange. The underlying gray 'shadow' corresponds to where the elevation data lies on the surface.  The underlying MODIS data is a 3 day average taken in the month of December 2002.",
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            "description": "ICESat elevation data taken on June 2, 2006 is shown in orange. The underlying gray 'shadow' corresponds to where the elevation data lies on the surface.  The underlying MODIS data is a 3 day average taken in the month of December 2005.",
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            "title": "For More Information",
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            "description": "See [http://www.nasa.gov/vision/earth/lookingatearth/antarctic_plumbing.html](http://www.nasa.gov/vision/earth/lookingatearth/antarctic_plumbing.html)",
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    "studio": "SVS",
    "funding_sources": [
        "ESE"
    ],
    "credits": [
        {
            "role": "Animator",
            "people": [
                {
                    "name": "Alex Kekesi",
                    "employer": "Global Science and Technology, Inc."
                },
                {
                    "name": "Lori Perkins",
                    "employer": "NASA/GSFC"
                }
            ]
        },
        {
            "role": "Visualizer",
            "people": [
                {
                    "name": "Cindy Starr",
                    "employer": "Global Science and Technology, Inc."
                }
            ]
        },
        {
            "role": "Scientist",
            "people": [
                {
                    "name": "Ted Scambos",
                    "employer": "NSIDC"
                },
                {
                    "name": "Bob Bindschadler",
                    "employer": "NASA/GSFC"
                },
                {
                    "name": "Helen Amanda Fricker",
                    "employer": "Scripps Institution of Oceanography, University of California, San Diego"
                },
                {
                    "name": "Laurie Padman",
                    "employer": "Earth and Space Research"
                }
            ]
        }
    ],
    "missions": [
        "Ice, Cloud, and land Elevation Satellite (ICESat)",
        "Terra"
    ],
    "series": [],
    "tapes": [],
    "papers": [
        "'An Active Subglacial Water System in West Antarctica Mapped from Space', Science Express, 2007 Feb 15"
    ],
    "datasets": [
        {
            "name": "",
            "common_name": "",
            "platform": "Aqua",
            "sensor": "MODIS",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "",
            "url": "",
            "date_range": "3 day averages: 2002/12 and 2005/12"
        },
        {
            "name": "",
            "common_name": "",
            "platform": "ICESat",
            "sensor": "GLAS",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "",
            "url": "",
            "date_range": "2003/10/24 and 2006/06/02 (Orbits 4250 and 18414)"
        },
        {
            "name": "",
            "common_name": "",
            "platform": "Terra",
            "sensor": "MODIS",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "",
            "url": "",
            "date_range": "3 day averages: 2002/12 and 2005/12"
        },
        {
            "name": "Daily L3 6.25 km 89 GHz Brightness Temperature (Tb)",
            "common_name": "",
            "platform": "Aqua",
            "sensor": "AMSR-E",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "",
            "url": "",
            "date_range": "2006/10/12"
        },
        {
            "name": "Blue Marble: Next Generation",
            "common_name": "BMNG",
            "platform": "Terra and Aqua",
            "sensor": "MODIS",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "The Blue Marble data is courtesy of Reto Stockli (NASA/GSFC).",
            "url": "http://earthobservatory.nasa.gov/Newsroom/BlueMarble/",
            "date_range": "2004/10"
        },
        {
            "name": "Level 3 12.5 km Sea Ice Concentration",
            "common_name": "Sea Ice Concentration",
            "platform": "Aqua",
            "sensor": "AMSR-E",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "",
            "url": "",
            "date_range": "2006/10/12"
        },
        {
            "name": "MODIS Mosaic of Antarctica (MOA) Image Map",
            "common_name": "MOA",
            "platform": "Terra and Aqua",
            "sensor": "MODIS",
            "type": "Mosaic",
            "organizations": [],
            "description": "Staff from the National Snow and Ice Data Center (NSIDC) and the University of New Hampshire have assembled two digital image maps of surface morphology and optical snow grain size that cover the Antarctic continent and its surrounding islands. The MODIS Mosaic of Antarctica (MOA) image maps are derived from composites of 260 MODIS (Moderate-resolution Imaging Spectroradiometer) orbit swaths acquired between 20 November 2003 and 29 February 2004. The MOA provides a cloud-free view of the ice sheet, ice shelves, and land surfaces, and a quantitative measure of optical snow grain size for snow- or ice-covered areas. All land areas larger than a few hundred meters that are south of 60° S are included in the mosaic, as well as persistent fast ice regions and some grounded icebergs present near the coast in the 2003-2004 austral summer. The MOA surface morphology image map is derived from digitally processed MODIS Band 1 data. The optical snow grain size image is compiled using a normalized ratio of atmospherically corrected, calibrated band radiance data from Bands 1 and 2.",
            "credit": "",
            "url": "http://nsidc.org/data/nsidc-0280.html",
            "date_range": "2003/11/30 - 2004/02/29"
        }
    ],
    "nasa_science_categories": [
        "Earth"
    ],
    "keywords": [
        "Antarctic",
        "Antarctic Ice Sheet",
        "Antarctic Oscillation",
        "Antarctica",
        "Climate Indicators",
        "Cryosphere",
        "Earth Science",
        "Glacier Elevation/Ice Sheet Elevation",
        "Glacier Mass Balance/Ice Sheet Mass Balance",
        "Glacier Thickness/Ice Sheet Thickness",
        "Glacier Topography/Ice Sheet Topography",
        "Glaciers/Ice Sheets",
        "HDTV",
        "Hydrosphere",
        "Location",
        "Teleconnections"
    ],
    "recommended_pages": [],
    "related": [],
    "sources": [],
    "products": [],
    "newer_versions": [],
    "older_versions": [],
    "alternate_versions": []
}