The motion and active deformation of India

Details The motion and active deformation of India The motion and active deformation of India

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28..647p&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 4, p. 647-650

Physics

56

Geodesy And Gravity: Crustal Movements-Interplate, Geodesy And Gravity: Crustal Movements-Intraplate, Geodesy And Gravity: Space Geodetic Surveys, Tectonophysics: Plate Motions-Present And Recent

Scientific paper

Measurements of surface displacements using GPS constrain the motion and deformation of India and India-Eurasia plate boundary deformation along the Himalaya. The GPS velocities of plate-interior sites constrain the pole of the angular velocity vector of India with respect to Eurasia to lie at 25.6+/-1.0°N11.1+/-9.0°E, approximately 6° west of the NUVEL-1A pole of <3 Ma plate motion. The angular rotation rate of 0.44+/-0.03°Myr-1 is 14% slower than the long-term rate of 0.51° Myr-1. Insignificant velocities between plate interior sites indicate that the exposed Indian plate is stable to within 7.10-9yr-1. The observed contraction vector across the Himalaya (<=20 mm/yr) veers from ~N20°E in the northwest Himalaya to ~N25°W in east Nepal, consistent with east-west extension of southern Tibet.

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