Entry_ID: NSIDC-0115
Entry_Title: Blue Ice Tephra II - Mt. DeWitt
Group: Data_Set_Citation
   Dataset_Creator: Nelia Dunbar
   Dataset_Title: Blue Ice Tephra II - Mt. DeWitt
   Dataset_Release_Date: 2003-02-01
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0115.html
   Dataset DOI: http://dx.doi.org/10.7265/N5GQ6VPV
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Nelia
   Last_Name: Dunbar
   Group: Contact_Address
      Address: New Mexico Bureau of Mines & Mineral Resources
      Address: Earth and Environmental Science Department
      Address: New Mexico Tech
      City: Socorro
      Province_or_State: NM
      Postal_Code: 87801-4796
   End_Group
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   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
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Glaciers/Ice Sheets
   Variable_Level_1: Ice Sheets
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Paleoclimate
   Term: Ice Core Records
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Paleoclimate
   Term: Ice Core Records
   Variable_Level_1: Volcanic Deposits
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Glaciers/Ice Sheets
   Variable_Level_1: Ice Sheets
End_Group
Keyword: AGDC
Keyword: Antarctica
Keyword: Geochemistry
Keyword: Glaciology
Keyword: Ice Cores
Keyword: Mt. DeWitt
Keyword: NSIDC
Keyword: Tephra
Keyword: Volcanic
Sensor_Name: CORING DEVICES
Source_Name: GROUND-BASED OBSERVATIONS
Source_Name: GROUND STATIONS
Group: Temporal_Coverage
   Start_Date: 1996-01-01
   Stop_Date: 1997-12-31
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: -77.12
   Northernmost_Latitude: -77.12
   Westernmost_Longitude: -159.51
   Easternmost_Longitude: -159.51
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: ANTARCTICA
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: AGDC > Antarctic Glaciological Data Center
   Data_Center_URL: http://nsidc.org/agdc/
   Group: Personnel
      Role: Data Center Contact
      First_Name: AGDC
      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_Size: 104 KB
   Distribution_Format: Microsoft Excel
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 18 MB
   Distribution_Format: TIFF
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 51 KB
   Distribution_Format: ASCII Text (.txt)
End_Group
Group: Multimedia_Sample
   File: http://nsidc.org/data/docs/agdc/nsidc0115_dunbar/images/mt_dewitt.gif
   Caption: Sample Location Map
End_Group
Group: Reference

   Dunbar, N., G. Zielinski, and D. Voisins, 2002, Tephra layers in the Siple and 
   Taylor Dome Ice Cores, Antarctica: Correlations and Sources: submitted to 
   Quaternary Research.

End_Group
Group: Summary

   This data set is the result of a study of volcanic ash and rock fragment 
   (tephra) layers in exposed  blue ice areas on Mt. DeWitt, Antarctica (77.12 
   deg S, 159.51 deg E). Tephra samples were collected between 15 November 1996 
   and 15 January 1997.

   Data include the following information for each sample site: a general 
   description, electron microprobe analysis, GPS location, neutron activation 
   analysis, and a visual description of the petrography. Data are provided as an 
   Excel 97 data file, (this file is also divided into various text files) and 
   TIF images. Data are available via ftp.

   Antarctic ice sheets preserve a record of the volcanic ash layers and chemical 
   aerosol signatures of local and distant volcanic eruptions. Correlation of 
   individual tephra layers, or sets of layers, in blue ice areas will allow a 
   better understanding of the geometry of ice flow in these areas.  Tephra 
   layers in deep ice cores can also provide unique time-stratigraphic markers in 
   cores that are difficult to date.

End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2003-02-01
Last_DIF_Revision_Date: 2014-03-14
DIF_Revision_History: Removed USADCC logo for Search cleanup.