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Hydrologic Outlets of the Greenland Ice Sheet
Entry ID: NSIDC-0372


Summary
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.

Related URL
Link: VIEW RELATED INFORMATION
Description: PARCA Product Web Site


Geographic Coverage
 N: 85.02649 S: 59.58015  E: -8.96739  W: -80.79734

Data Set Citation
Dataset Originator/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


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


Location Keywords
CONTINENT > NORTH AMERICA > GREENLAND


Science Keywords
TERRESTRIAL HYDROSPHERE >SURFACE WATER >DISCHARGE/FLOW    [Definition]
TERRESTRIAL HYDROSPHERE >SURFACE WATER >DRAINAGE    [Definition]
TERRESTRIAL HYDROSPHERE >SURFACE WATER >RUNOFF    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW MELT    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW MELT    [Definition]


ISO Topic Category
INLAND WATERS


Platform
LANDSAT-7    [Information]
SATELLITES    [Information]


Instrument
ETM+ >Enhanced Thematic Mapper Plus    [Information]


Project
CCAWS >Cryospheric Change Analysis Web Services    [Information]


Keywords
Drainage
Greenland
Ice Sheet
Snow Melt


Data Set Progress
COMPLETE


Data Center
Cryospheric Change Analysis Web Services

Data Center Personnel
Name: NSIDC CCAWS USER SERVICES
Email: nsidc at nsidc.org


National Snow and Ice Data Center    [Information]
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 at 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 at berkeley.edu
Contact Address:
UC 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
Fax: +1 (303) 492-2468
Email: nsidc at 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


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

Creation and Review Dates
DIF Creation Date: 2009-06-07
Last DIF Revision Date: 2016-01-27



Link to Web Site