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Relative motions of the Australian, Pacific and Antarctic plates estimated by the Global Positioning SystemGlobal Positioning System (GPS) measurements spanning approximately 3 years have been used to determine velocities for 7 sites on the Australian, Pacific and Antarctic plates. The site velocities agree with both plate model predictions and other space geodetic techniques. We find no evidence for internal deformation of the interior of the Australian plate. Wellington, New Zealand, located in the Australian-Pacific plate boundary zone, moves 20 +/- 5 mm/yr west-southwest relative to the Australian plate. Its velocity lies midway between the predicted velocities of the two plates. Relative Euler vectors for the Australia-Antarctica and Pacific-Antarctica plates agree within one standard deviation with the NUVEL-1A predictions.
Document ID
19950055710
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Larson, Kristine M. (University of Colorado, Boulder, CO United States)
Freymueller, Jeff (Stanford University Stanford, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Geophysical Research Letters
Volume: 22
Issue: 1
ISSN: 0094-8276
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSF EAR-92-09385
CONTRACT_GRANT: NAG5-1908
Distribution Limits
Public
Copyright
Other