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Relative motions of the Australian, Pacific and Antarctic Plates estimated by the Global Positioning System
Author(s) -
Larson Kristine M.,
Freymueller Jeff
Publication year - 1995
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl02788
Subject(s) - geology , pacific plate , geodesy , geodetic datum , plate tectonics , deformation (meteorology) , global positioning system , north american plate , seismology , oceanography , subduction , telecommunications , computer science , tectonics
GPS measurements spanning ∼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.