NSIDC-0372_1

Hydrologic Outlets of the Greenland Ice Sheet, Version 1

Version 1 eng; usa
  • Abstract
    The Hydrologic Outlets of the Greenland Ice Sheet data set contains GIS point shapefiles that include 891 observed and potential hydrologic outlets of the Greenland Ice Sheet, as identified by Lewis and Smith (2009), using satellite imagery. There are 460 observed hydrologic outlets that include proglacial streams and rivers emerging from the ice sheet (length scale >1 km), proglacial lakes touching the ice edge or clearly connected to it via streams or rivers (length scale >3 km), and sediment-rich plumes exiting tidewater glaciers into fjords. Also, there are 431 potential hydrologic outlets that include point locations with release of meltwater from fjords without obvious sediment discharge, as well as locations where the ice sheet directly connects to the ocean that cannot be proven to release meltwater. Meltwater features along the entire edge of the ice sheet were mapped via photo interpretation of GoogleEarth and Landsat ETM+ 15 m panchromatic data. The exact acquisition dates of the imagery are not available; however, owing to the light and relatively snow-free conditions seen in the GoogleEarth and Landsat images, it is presumed that they were taken during the summer season. Neither Landsat or GoogleEarth images were available for a section of ice sheet within the northern Tunu region; therefore, that region was excluded from the study. This excluded area represents approximately 0.9 percent of the ice sheet perimeter. Data are available via FTP, and can be read in any GIS software. The following journal article provides documentation for this data set: Lewis, Sarah and Laurence Smith. 2009. Hydrologic Drainage of the Greenland Ice Sheet. Hydrological Processes doi: 10.1002/hyp.7343. This journal article can be accessed from the Documentation link at the top of this Web page.
  • Purpose
    Scientific Research

Data Identification Fields:

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    Processing Level

    NA

    Quality
    Collection Progress

    Complete

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Surface Water
    • Discharge/Flow
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Surface Water
    • Drainage
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Surface Water
    • Runoff
    • EARTH SCIENCE
    • Cryosphere
    • Snow/Ice
    • Snow Melt
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Snow/Ice
    • Snow Melt
Other Descriptive Keywords
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ISO Topic Categories
  • INLAND WATERS

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    LANDSAT-7
    Instruments
    • ETM+

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
Location Keywords
    • Continent
    • North America
    • Greenland

Data Centers

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  • National Snow and Ice Data Center
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    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
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    DISTRIBUTOR

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email

Data Contacts

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  • Sarah
    Technical Contact
    Sarah Lewis

    122 Mulford Hall #3114
    Berkeley, CA 94720-3114

  • Sarah
    Technical Contact
    Sarah Lewis

    122 Mulford Hall #3114
    Berkeley, CA 94720-3114

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    National Snow and Ice Data Center

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    NSIDC Services

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
  • NSIDC
    Data Center Contact
    NSIDC Services

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email

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    Collection Citations
    • Hydrologic Outlets of the Greenland Ice Sheet, Version 1
      1

      Published by: National Snow and Ice Data Center