Skip to main content
Article thumbnail
Location of Repository

Scotia Arc kinematics from GPS geodesy

By R. Smalley, I.W.D. Dalziel, M. G. Bevis, E. Kendrick, D.S. Stamps, E.C. King, F.W. Taylor, E. Lauría, A. Zakrajsek and H. Parra


GPS crustal velocity data from the Scotia and South Sandwich plates, transform azimuths, spreading data, and an updated earthquake slip vector catalog provide the first Scotia and South Sandwich plate Euler vector estimates not dependent on closure as the GPS data tie them to the global plate circuit. Neither the GPS data, which sample limited portions of the plates, nor the geologic data, which are not tied to the global spreading circuit, are sufficient individually to define the Euler vectors. As Scotia plate GPS measurements do not sample the stable plate interior, plate boundary deformation field modeling is necessary for Euler vector estimation. Our South America- Antarctic and Scotia- South Sandwich Euler pole estimates agree with previous estimates from either GPS or geologic data. Our South America- Scotia Euler vector, however, is significantly different and near the South America- Antarctic Euler vector producing an approximately coaxial motion of Scotia between South America and Antarctica

Topics: Earth Sciences
Publisher: American Geophysical Union
Year: 2007
DOI identifier: 10.1029/2007GL031699
OAI identifier:
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • (external link)
  • (external link)
  • (external link)
  • (external link)
  • Suggested articles

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.