03 February, 2015
Wenbin Xu and Rishabh Dutta have published a new study on the 2004 Tabuk earthquake in BSSA where they use InSAR observations and Bayesian estimation to greatly improve the location and source parameters for this earthquake in northwestern Saudi Arabia. They show that locations determined from seismic data were off by 3-16 km , making it impossible to associate the activity with one of the many mapped faults in the area. The study shows how InSAR data can be used to improve source parameters of shallow moderately sized earthquakes.
Teng Wang has also published a new paper in IEEE JSTARS on improved pixel-offset tracking for determining coseismic ground displacements. With more SAR data and higher resolution, pixel tracking is becoming increasingly important in geophysical applications. Teng shows that by focusing the pixel-offset measurements on realtively stable targets, one can significantly improve the measurement results and obtain accurate data for interferograms that may look completely decorrelated: