New constraints on relative motion between the Pacific Plate and Baja California microplate (Mexico) from GPS measurements

C. Plattner, R. Malservisi, T. H. Dixon, P. Lafemina, G. F. Sella, J. Fletcher, F. Suarez-Vidal

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

We present a new surface velocity field for Baja California using GPS data to test the rigidity of this microplate, calculate its motion in a global reference frame, determine its relative motion with respect to the North American and the Pacific plates, and compare those results to our estimate for Pacific-North America motion. Determination of Pacific Plate motion is improved by the inclusion of four sites from the South Pacific Sea Level and Climate Monitoring Project. These analyses reveal that Baja California moves as a quasi-rigid block but at a slower rate in the same direction, as the Pacific Plate relative to North America. This is consistent with seismic activity along the western edge of Baja California (the Baja California shear zone), and may reflect resistance to motion of the eastern edge of the Pacific Plate caused by the 'big bend' of the San Andreas fault and the Transverse Ranges in southern California.

Original languageEnglish (US)
Pages (from-to)1373-1380
Number of pages8
JournalGeophysical Journal International
Volume170
Issue number3
DOIs
StatePublished - Sep 1 2007

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Lower California (Mexico)
microplate
Sea level
Mexico
Pacific plate
Rigidity
Global positioning system
GPS
Monitoring
San Andreas Fault
plate motion
rigidity
Southern California
shear zone
sea level
climate
velocity distribution
Direction compound
inclusions
shear

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Cite this

Plattner, C. ; Malservisi, R. ; Dixon, T. H. ; Lafemina, P. ; Sella, G. F. ; Fletcher, J. ; Suarez-Vidal, F. / New constraints on relative motion between the Pacific Plate and Baja California microplate (Mexico) from GPS measurements. In: Geophysical Journal International. 2007 ; Vol. 170, No. 3. pp. 1373-1380.
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New constraints on relative motion between the Pacific Plate and Baja California microplate (Mexico) from GPS measurements. / Plattner, C.; Malservisi, R.; Dixon, T. H.; Lafemina, P.; Sella, G. F.; Fletcher, J.; Suarez-Vidal, F.

In: Geophysical Journal International, Vol. 170, No. 3, 01.09.2007, p. 1373-1380.

Research output: Contribution to journalArticle

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