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Collaborative Research: Microparticle/tephra analysis of the WAIS Divide ice core
Entry ID: dunbar_0636767

Abstract: Visible tephra layers were found in the Byrd Station ice core, the first deep core drilled in Antarctica. Since then, tephra have been found in many other Antarctic ice cores. Tephra layers in ice cores range from sub-centimeter thick, visible layers to cryptotephra consisting of sparse, fine-grained (~10 micron) glass particles. Detection of tephra particles has improved with advances in methods ... View entire text

Purpose: The main purpose of this research was to address the following question: What is the detailed chronology of volcanic eruptions producing atmospheric microparticles (tephra), the possible climatic impact of such eruptions, and can these tephra layers be used to chronostratigraphically link the WAIS Divide ice core with other paleoclimate records?

The location and identification of tephra adds ... View entire text
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Description: The U.S research community is conducting a deep ice coring project in West Antarctica for studies of climate, ice sheet history and cryobiology. This project is collecting a deep ice core from the West Antarctic Ice Sheet (WAIS) ice flow divide and integrating approximately 40 separate but synergistic projects to analyze the ice and interpret the records.
Geographic Coverage
Spatial coordinates   
  N: -79.47   S: -79.47   E: 112.12   W: 112.12

Temporal Coverage
Start Date: 2007-07-01
Stop Date: 2012-06-30
Data Set Progress
Data Center
NSIDC Antarctic Glaciological Data Center Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
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Phone: (505) 835-5783
Email: nelia at
Contact Address:
New Mexico Bureau of Mines & Mineral Resources
Earth and Environmental Science Department
New Mexico Tech
801 Leroy Place
City: Socorro
Province or State: NM
Postal Code: 87801-4796
Country: USA
Dunbar, NW; Mcintosh, WC; Kurbatov, AV. "Integrated tephrochronology of the West Antarctic region - Implications for a potential tephra record in the West Antarctic Ice Sheet (WAIS) divide ice core," in 8th Annual V M Goldschmidt Conference., v.72, 2008, p. A232-A232.

Dunbar, N.W., Kurbatov, A.V., and McIntosh, W.C., 2011, A Rich Tephra Record in the WAIS Divide (WDC06A) Ice Core: WAIS Divide ... View entire text
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Creation and Review Dates
DIF Creation Date: 2012-06-19
Last DIF Revision Date: 2017-08-23