Technique for improving InSAR images using power-law tropospheric correction
Speaker : Wei-Ji Wang
Adviser : Chung-Pai Chang, Wu-Lung Chang
Abstract
InSAR Tropospheric correction techniques rely either on external data, often limited by spatial and temporal accuracy, or can be estimated from the high-resolution interferometric phase itself. However, current phase-estimated correction techniques do not account for the spatial variability of the tropospheric properties and fail to capture tropospheric signals over larger regions. This power-law correction method that accounts for spatial variability in atmospheric properties and can be applied to interferograms containing topographically-correlated deformation. The author used the technique to observe the slow slip events in Guerrero, Mexico, and see whether the Guerrero Gap therefore still has the potential for a large earthquake or not.
Reference
D. P. S. Bekaert et al., A spatially-variable power-law tropospheric correction technique for InSAR data, 2015
D. P. S. Bekaert et al., Reassessing the 2006 Guerrero slow slip event, Mexico_implications for large earthquakes in the Guerrero Gap, 2015