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Blue Ice Tephra II - Mt. DeWitt

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Entry ID

NSIDC-0115

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.

Geographic Coverage

 

Spatial Coordinates:
N: -77.12°     S: -77.12°     E: -159.51°     W: -159.51°    

Multimedia Sample


Sample Location Map


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

Temporal Coverage

Start Date: 1996-01-01
Stop Date: 1997-12-31

Location Keywords

  • CONTINENT ANTARCTICA

Science Keywords

  • Cryosphere Glaciers/Ice Sheets Ice Sheets
  • Paleoclimate Ice Core Records
  • Paleoclimate Ice Core Records Volcanic Deposits
  • Terrestrial Hydrosphere Glaciers/Ice Sheets Ice Sheets

Ancillary Keywords

  • AGDC
  • Antarctica
  • Geochemistry
  • Glaciology
  • Ice Cores
  • Mt. DeWitt
  • NSIDC
  • Tephra
  • Volcanic

Platform

  • GROUND-BASED OBSERVATIONS
  • GROUND STATIONS

Instrument

  • CORING DEVICES

Data Set Progress

complete

Data Center

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

Antarctic Glaciological Data Center
Data Center URL: http://nsidc.org/agdc/

Data Center Personnel

Name: AGDC User Services
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

Distribution

Distribution Media: FTP
Distribution Size: 104 KB
Distribution Format: Microsoft Excel

Distribution Media: FTP
Distribution Size: 18 MB
Distribution Format: TIFF

Distribution Media: FTP
Distribution Size: 51 KB
Distribution Format: ASCII Text (.txt)

Personnel

Nelia Dunbar
Role: INVESTIGATOR
Contact Address:

  • New Mexico Bureau of Mines & Mineral Resources
  • Earth and Environmental Science Department
  • New Mexico Tech

City: Socorro
Province or State: NM
Postal Code: 87801-4796

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

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.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2003-02-01
Last DIF Revision Date: 2014-03-14

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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