Three-dimensional surface deformation mapping by convensional interferometry and multiple aperture interferometry

In this study, the 3D deformation associated with the June 17, 2007 (Father´s day) intrusion and eruption along the east rift zone (ERZ) of the Kilauea volcano is reconstruced in this study using both the improved MAI and InSAR methods. ALOS PALSAR pairs were used, which were acquired in the ascending orbit pair acquired on 5 May 2007 and 20 June 2007 and the descending orbits pair on 28 February 2007 and 16 July 2007. While the InSAR is sensitive to vertical and E-W horizontal surface displacement, the MAI method improves the precision of along-track (or N-S component) deformation. The results confirmed by GPS data show a relatively precise measurement of NNW-SSE directional horizontal displacement occurred by the Father´s day intrusion and eruption.