Surface deformations in Central Asia

Measurement of surface deformations caused by drift of the Indian tectonic plate against the Eurasian plate has been performed with short-range EDM-instruments in U.S.S.R. Central Asia. A relative motion of 1.5 cm/yr has been found. It has been shown that uncertainty in the refraction model used in derivation of the motion vectors plays a great role in determination of the short-period motion results.