Hydrologic Outlets of the Greenland Ice Sheet

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Entry ID

NSIDC-0372

Summary

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.

Geographic Coverage

 

Spatial Coordinates:
N: 85.02649°     S: 59.58015°     E: -8.96739°     W: -80.79734°    

Data Set Citation

Dataset Creator: Lewis, S.
Dataset Title: Hydrologic Outlets of the Greenland Ice Sheet
Dataset Release Date: 2009-06-07
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0372.html

Temporal Coverage

Start Date: 1991-01-01
Stop Date: 2000-12-31

Location Keywords

  • CONTINENT NORTH AMERICA GREENLAND

Science Keywords

  • Cryosphere Snow/Ice Snow Melt
  • Terrestrial Hydrosphere Snow/Ice Snow Melt
  • Terrestrial Hydrosphere Surface Water Discharge/Flow
  • Terrestrial Hydrosphere Surface Water Drainage
  • Terrestrial Hydrosphere Surface Water Runoff

Ancillary Keywords

  • Drainage
  • Greenland
  • Ice Sheet
  • PARCA
  • Snow Melt

ISO Topic Category (View Definitions)

  • Inland Waters

Platform

  • Google Earth
  • LANDSAT-7
  • SATELLITES

Instrument

  • ETM+ Enhanced Thematic Mapper Plus

Project

  • NSIDC_CCAWS Cryospheric Change Analysis Web Services
  • PARCA Program in Arctic Regional Climate Assessment

Data Set Progress

complete

Data Center

NASA DAAC at the National Snow and Ice Data Center
Data Center URL: http://nsidc.org/daac/index.html

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

National Snow and Ice Data Center
Data Center URL: http://nsidc.org

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Distribution

Distribution Media: FTP
Distribution Size: 1 - 120 KB
Distribution Format: ESRI Shapefiles (.shp, .shx, .dbf, and .prj)

Personnel

Sarah Lewis
Role: INVESTIGATOR
Email: sarahlewis@berkeley.edu
Contact Address:

  • UCLA Berkeley
  • Geography Department
  • 122 Mulford Hall #3114

City: Berkeley
Province or State: CA
Postal Code: 94720-3114
Country: USA

NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Related URL

VIEW RELATED INFORMATION
PARCA Product Web Site

Reference

Lewis, Sarah, Laurence Smith. Hydrologic Drainage of the Greenland Ice Sheet. Hydrological Processes, 2009. DOI: 10.1002/hyp.7343

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2009-06-07
Last DIF Revision Date: 2014-10-02

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

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