Entry_ID: GGD320
Entry_Title: Permafrost Map of Alaska, USA
Group: Data_Set_Citation
   Dataset_Creator: Ferrians, O
   Dataset_Title: Permafrost Map of Alaska, USA
   Dataset_Release_Date: 1998-01-01
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/ggd320.html
End_Group
Group: Personnel
   Role: Data Author
   First_Name: Emily
   Last_Name: Binnian
   Email: binnian@usgs.gov
   Phone: 1 907 786-7020 
   Fax: 1 907  786-7036 
   Group: Contact_Address
      Address: US Geological Survey
      Address: EROS Alaska Field Office
      Address: 4230 University Drive
      City: Anchorage
      Province_or_State: Alaska
      Postal_Code: 99508-4664
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Oscar
   Last_Name: Ferrians
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Agriculture
   Term: Soils
   Variable_Level_1: Permafrost
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Frozen Ground
   Variable_Level_1: Permafrost
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Permafrost
End_Group
Keyword: Continuous Permafrost
Keyword: Discontinuous Permafrost
Keyword: Mapping
Keyword: Mountain Permafrost
Keyword: Permafrost Extent
Group: Spatial_Coverage
   Southernmost_Latitude: 51
   Northernmost_Latitude: 71.4
   Westernmost_Longitude: -130
   Easternmost_Longitude: 172
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: UNITED STATES OF AMERICA
   Detailed_Location: ALASKA, USA
End_Group
Data_Set_Language: English
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Data_Center
   Data_Center_Name: FGDC > Frozen Ground Data Center
   Data_Center_URL: http://nsidc.org/fgdc/
   Group: Personnel
      Role: Data Center Contact
      First_Name: FGDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 x
      Fax: 1 303  492-2468 x
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Format: ArcGIS
End_Group
Group: Multimedia_Sample
   File: http://nsidc.org/fgdc/maps/images/alaska_map_tmb.gif
   URL: http://nsidc.org/fgdc/maps/alaska_browse.html
   Caption: Map Thumbnail
End_Group
Group: Multimedia_Sample
   File: http://nsidc.org/fgdc/maps/images/alaska_map_brws.gif
   Caption: Browse image of Permafrost Map of Alaska, USA.
End_Group
Group: Reference

   Ferrians, O.J. 1965. Permafrost map of Alaska. U.S. Geological Survey. 
   Miscellaneous Geologic Investigations Map I- 445. Scale 1:2,500,000.

End_Group
Group: Summary

   This data set consists of a geo-referenced digital map and attribute data 
   derived from the publication 'Permafrost map of Alaska'. The map is presented 
   at a scale of 1 to 2,500,000 and shows the correlation of physiographic 
   province to presence of permafrost across the state of Alaska. The digital 
   data were prepared under the U.S. Geological Survey Global Change Program, 
   Land Data Systems - Arctic Land Processes Studies for display and analysis of 
   terrain. The line work was captured by hand digitizing the source map, 
   Ferrians, O.J., 1965, Permafrost map of Alaska - U.S. Geological Survey 
   Miscellaneous Geologic Investigations Map I-445. Scale 1 to 2,500,000. The 
   digital map was assembled and edited in ARC/INFO. The source map projection is 
   polyconic. It is based on the Clarke 1866 ellipsoid with a central meridian of 
   150 W longitude. The data were geo-referenced from digitizer coordinates to 
   the polyconic projection and then projected into an Albers Equal Area 
   projection. The coastline was taken from the U.S Geological Survey, 1 to 
   2,000,000 scale Digital Line Graph data (U.S. Geological Survey, 1987). 
   Attributes for the permafrost map were assigned. Metadata documentation was 
   completed in 1996. The map units are closed polygons that are generalized in 
   shape and size. They are defined in terms of their physiographic 
   characteristics and association with permafrost. Each unit differs with 
   respect to all other units and is uniquely identified as follows. 11 
   Mountainous Area underlain by continuous permafrost 12 Mountainous Area 
   underlain by discontinuous permafrost 13 Mountainous Area underlain by 
   isolated masses of permafrost 21 Lowland and Upland Area underlain by thick 
   permafrost 22 Lowland and Upland Area underlain by moderately thick to thin 
   permafrost 23 Lowland and Upland Area underlain by discontinuous permafrost 24 
   Lowland and Upland Area underlain by numerous isolated masses of permafrost 25 
   Lowland and Upland Area underlain by isolated masses of permafrost 26 Lowland 
   and Upland Area generally free of permafrost

   Use constraints -  The U.S. Geological Survey should be acknowledged as the 
   data source in products derived from these data. The data are general in 
   nature and should not be used at a scale larger than 1 to 2,500,000, that of 
   the original map. Users must assume responsibility to determine the usability 
   of this data for their purposes. The use of these data is not restricted and 
   may be interpreted by organizations, agencies, units of government or others; 
   however, they are responsible for its appropriate application. Digital data 
   files are periodically updated. Files are dated and users are responsible for 
   obtaining the latest revisions of the data. Although these data have been 
   processed successfully on a computer system at the U.S. Geological Survey, no 
   warranty expressed or implied is made by the agency regarding the utility of 
   the data on any other system, nor shall the act of distribution constitute any 
   such warranty. A copy of this map is presented on the CAPS Version 1.0 CD-ROM, 
   June 1998.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/gis/
   Description: GIS Data and Resources at NSIDC
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 1998-01-01
Last_DIF_Revision_Date: 2013-03-07
Group: DIF_Revision_History

   Fixed Access Data link. It was broke because an optional reg form type was not 
   chosen from the drop down menu.

End_Group