[Parameters: Topic='PALEOCLIMATE', Term='ICE CORE RECORDS', Variable_Level_1='PARTICULATE MATTER']
Dust Logging at Dome C for Abrupt Climate Changes, Large Volcanic Eruptions and Bolide Impacts
Entry ID: bay_0739743

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Summary
Abstract: This award supports a project to make high-resolution logs of dust and ash in the Dome C borehole using an optical dust logger. The dust logger employs a temperature-regulated diode laser at 404 nm wavelength near the absorption minimum for glacial ice, a photon counting detector, onboard computer control and DSL telemetry to the surface. The logger shines light into the ice surrounding a ... View entire text

Purpose: The logger probes an area of order m2 of the horizon compared to the ~0.02 m2 core, greatly suppressing depositional noise and making the technique immune to core damage or loss. The method achieves unprecedented resolution of climate variations for matching or comparing ice core records, can detect particulate layers from explosive fallout which are invisible or missing in the core, and often ... View entire text
Related URL
Link: VIEW RELATED INFORMATION
Description: This webpage makes all of our Dome C optical logging data available for other researchers. The data are fully processed and depths have been corrected to the core using known features. We also include a working list of optical anomalies that suggest the presence of thin opaque fallout layers, typically from volcanic eruptions.
Geographic Coverage
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Spatial coordinates   
  N: -75.1   S: -75.1   E: 123.35   W: 123.35

Service Citation
Originators: Michael Ritter
Title: The Physical Environment
Provider: University of Wisconsin-Stevens Point
URL: http://earthonlinemedia.com/ebooks/tpe_3e/about_the_physical_enviro...
Service Keywords
EDUCATION/OUTREACH >CURRICULUM SUPPORT >BACKGROUND INFORMATION Parameter Definition

Science Keywords
AGRICULTURE >SOILS Parameter Definition
ATMOSPHERE >AIR QUALITY Parameter Definition
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ISO Topic Category
Platform
AQUA > Earth Observing System, AQUA Ancillary Description
Instrument
AIRS > Atmospheric Infrared Sounder Ancillary Description
Project
Access Constraints None
Ancillary Keywords
Data Set Progress
COMPLETE
Originating Center
GES DAAC
Data Center
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Supplemental Info
Data Center URL: http://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Distribution
Distribution Media: FTP
Distribution Size: 445.7 MB
Distribution Format: HDF-EOS
Fees: None
Personnel
ED ESFANDIARI
Role: DIF AUTHOR
Phone: 301-614-5960
Fax: 301-614-5268
Email: asghar.e.esfandiari at nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2013-02-14
Last DIF Revision Date: 2013-03-22

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Link to Web Site