Entry_ID: GGD247
Entry_Title: Patterned Ground Features in Discontinuous Permafrost, Interior Alaska, USA
Group: Data_Set_Citation
   Dataset_Creator: James Walters
   Dataset_Title: Patterned Ground Features in Discontinuous Permafrost, Interior Alaska, USA
   Dataset_Release_Date: 2003-07-25
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/ggd247.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: James C.
   Last_Name: Walters
   Email: walters@uni.edu
   Phone: 1 319 273-2707 
   Fax: 1 319  273-7124 
   Group: Contact_Address
      Address: University of Northern Iowa
      Address: Department of Earth Science
      City: Cedar Falls
      Province_or_State: IA
      Postal_Code: 50614
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Frozen Ground
   Variable_Level_1: Active Layer
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Frozen Ground
   Variable_Level_1: Periglacial Processes
   Detailed_Variable: Patterned Ground
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Frozen Ground
   Variable_Level_1: Active Layer
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Frozen Ground
   Variable_Level_1: Periglacial Processes
   Detailed_Variable: Patterned Ground
End_Group
ISO_Topic_Category: Environment
Keyword: Active Layer
Keyword: Patterned Ground
Keyword: Periglacial Features
Keyword: Periglacial Processes
Source_Name: GROUND-BASED OBSERVATIONS
Source_Name: GROUND STATIONS
Group: Temporal_Coverage
   Start_Date: 1982-01-01
End_Group
Group: Spatial_Coverage
   Southernmost_Latitude: 63
   Northernmost_Latitude: 63.167
   Westernmost_Longitude: -146.5
   Easternmost_Longitude: -146
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Detailed_Location: ALASKA
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: UNITED STATES OF AMERICA
   Detailed_Location: DENALI HIGHWAY, ALASKA
End_Group
Data_Set_Language: English
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_Format: Paper
End_Group
Group: Reference

   Walters, J.C. 1988. Observations of sorted circle activity,  central Alaska. 
   International Permafrost Conference, 5th.  Proceedings, p. 886-891.  
Walters, 
   J.C. 1988. Observations of sorted patterned ground  features, High 
   Valley/Tangle Lakes region, central Alaska, U.S.A.  Zeit. Geomorph., N.F., 
   Suppl.-Bd. 71, p. 93-106.  
Walters, J.C. 1993. Sorted circle dynamics: 10 
   years of  field observations from central Alaska. International Permafrost   
   Conference, 6th. Proceedings, p. 1346.

End_Group
Group: Summary

   This data set consists of active layer depth measurements, and photography and 
   surveys of patterned ground activity at the Tangle Lakes, MacLaren Summit, and 
   High Valley areas along the Denali Highway in Alaska. Repetitive photography 
   and surveys of wooden dowels, metal spikes, and marked stones provided a 
   rudimentary means of documenting and monitoring patterned ground activity.  
   Active layer depth was measured annually with a permafrost probe, usually in 
   late July and August.

End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2003-07-25
Last_DIF_Revision_Date: 2012-09-18
DIF_Revision_History: added dist. format