Long period interferograms reveal 1992-1998 steady rate of deformation at Krafla volcano (North Iceland).

We formed interferograms of ERS-SAR scenes covering the area of Krafla (N. Iceland) with time span values of up to six years (1992-1998). Our data rev eals a steady deformation rate at Krafla and within its fissure swarm, with values reaching +2.1 cm/y in the ground to satellite direction, at the vol cano. The area affected by deformation extends 20 km both north and south o f the volcano. The best fit dislocation model consists of sills, to the nor th and south of the volcano, and a magma chamber, located below the volcano , all of them undergoing contraction.