Polar Motion Information
Entry ID: OES_GL_POLAR_MOTION

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Summary
Abstract: The POLARIS (Polar Motion Analysis by Radio Interferometric Surveying)
network monitors the location of the Earth's axis of rotation using
the method of Very Long Baseline Interferometry (VLBI). Extragalactic
radio sources are observed to determine polar motion, universal time,
precession and nutation. Estimates of x and y components of the
position of the pole, and formal uncertainties are ... View entire text
Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Temporal Coverage
Start Date: 1978-01-01
ISO Topic Category
Ancillary Keywords
Originating Center
Data Center
National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce Supplemental Info
Data Center URL: http://www.ngs.noaa.gov/

Data Center Personnel
Name: INFORMATION SERVICES BRANCH NATIONAL GEODETIC SURVEY
Phone: 301-713-3242
Fax: 301-713-4172
Email: ngs.infocenter at noaa.gov
Contact Address:
National Geodetic Survey, NOAA
Information Services Branch
1315 East-West Highway
City: Silver Spring
Province or State: MD
Postal Code: 20910-3282
Country: USA
Distribution
Distribution Media: Online, Digital
Publications/References
IRIS Bulletin-A; Earth Orientation (available from NOAA N/OES13, 11400
Rockville Pike, Rockville MD 20852)

Carter, W.E., D.S. Robertson, J.E.Pettey, B.D. Tapley, B.E. Schultz,
R.J. Eanes, and Miao Lufeng, 'Variations in the Rotation of the Earth,'
Science, vol 224, pp. 957-961, 1 June, 1984.
Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2012-12-21
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