Physics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....8910283n&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Nov. 10, 1984, p. 10283-10290. Navy-supported research.
Physics
40
Ocean Bottom, Pacific Ocean, Planetary Rotation, Plates (Tectonics), Axes Of Rotation, Convergence, Errors, Magnetic Anomalies, Pacific Northwest (Us), Rotating Environments
Scientific paper
Convergence rates between the Juan de Fuca and North American plates are calculated by means of their relative, present-day pole of rotation. A method of calculating the propagation of errors in addition to the instantaneous poles of rotation is also formulated and applied to determine the Euler pole for Pacific-Juan de Fuca. This pole is vectorially added to previously published poles for North America-Pacific and 'hot spot'-Pacific to obtain North America-Juan de Fuca and 'hot spot'-Juan de Fuca, respectively. The errors associated with these resultant poles are determined by propagating the errors of the two summed angular velocity vectors. Under the assumption that hot spots are fixed with respect to a mantle reference frame, the average absolute velocity of the Juan de Puca plate is computed at approximately 15 mm/yr, thereby making it the slowest-moving of the oceanic plates.
Hey Richard N.
Nishimura Chikako
Wilson Stephen D.
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