The relative motion between Africa and Eurasia as derived from ITRF2000 and GPS data

Details The relative motion between Africa and Eurasia as derived from ITRF2000 and GPS data The relative motion between Africa and Eurasia as derived from ITRF2000 and GPS data

Aug 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30psde1f&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 16, pp. SDE 1-1, CiteID 1828, DOI 10.1029/2003GL017089

Physics

Geophysics

24

Geodesy And Gravity: Crustal Movements-Interplate (8155), Geodesy And Gravity: Terrestrial Reference Systems, Marine Geology And Geophysics: Plate Tectonics (8150, 8155, 8157, 8158)

Scientific paper

Studies of intra- and inter-plate deformation typically need a model describing the motions of the stable part of the tectonic plates for reference purposes. We have developed DEOS2k, a model for the current motion of seven major tectonic plates derived from space-geodetic observations. This paper focuses on relative motion between Africa and Eurasia. In the past, this motion has been poorly established because of poor data coverage for Africa. DEOS2k is based on ITRF2000 [Altamimi et al., 2002] and new African GPS observations. It is an improvement over the NUVEL-1A model for predicting the present-day relative motions of these two plates. DEOS2k predicts in northeastern Africa that Africa-Eurasia relative motion is about 40% smaller in magnitude than NUVEL-1A and trends more to the northwest. This is consistent with independent local geodetic observations. A similar shift in orientation, clockwise, is observed at the western tip of the plate boundary.

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