The field of linear velocities and movements of the earth crust in the South Eastern Europe region
Coordinates and velocities of GPS-points in the South-East Europe were used to derive the 2D model of velocities and horizontal strain rate fields of the region (the territory of Ukraine, Bulgaria, Romania, Greece, Turkey and Iran). The first step of studies consists of the development of the finite element approach based on the bicubic spline functions for the building of the regular grid data via scattered geodetic network. The second one represents the inversion of velocities from GPS observations data to the strain rate tensor.