9:30 AM - 9:45 AM
[SSS10-03] Detection of both icecap and crustal deformation associated with the 2014-2015 Bárðarbunga rifting episode
Keywords:Dike intrusion episode, Divergent plate boundary, Synthetic Aperture Radar, Iceland, Pixel offset technique
In this study, we processed COSMO-SkyMed images to simultaneously detect both the flow signals on the icecap and the crustal deformation associated with the rifting event. The offset tracking data derived from COSMO-SkyMed images showed the displacement signals that consist of both the crustal deformation over land and the icecap flow. Two displacement discontinuities were detected not only on the land but also on the icecap, while we could not capture the entire image of the both deformations due to the limited SAR image coverage. The 3D displacements revealed a graben structure with over 8 m subsidence at the graben floor. At the graben floor, approximately 1 m of the rift-parallel motion which caused by the dog-bone seismicity was detected. Using these observation results, we will estimate the dike intrusion model and discuss the possible interaction between the ice and the crustal deformation during the 2014-2015 Bárðarbunga rifting episode.