The 2000 M-w 6.8 Uglegorsk earthquake and regional plate boundary deformation of Sakhalin from geodetic data

Interseismic GPS velocities in Sakhalin indicate that the island moves to the west at 3-4 mm/yr with respect to the Eurasian plate, which is about half of the relative Eurasia North America plate convergence rate. GPS measurements across the central Sakhalin fault system provide evidence of compressive and strike-slip strain accumulation at a rate less than or equal to3 mm/yr. Coseismic vertical displacements produced by the August 4, 2000 M-w 6.8 Uglegorsk earthquake in Sakhalin were analyzed by constrained nonlinear inversion which provided evidence for a reverse faulting mechanism on an east-dipping fault plane.