Co-Registration of Optically Sensed Images and Correlation (COSI-Corr): an Operational Methodology for Ground Deformation Measurements

摘要

Recent methodological progress, Co-Registration ofudOptically Sensed Images and Correlation, outlined here, makes itudpossible to measure horizontal ground deformation from opticaludimages on an operational basis, using the COSI-Corr softwareudpackage. In particular, its sub-pixel capabilities allow for accurateudmapping of surface ruptures and measurement of co-seismicudoffsets. We retrieved the fault rupture of the 2005 Mw 7.6udKashmir earthquake from ASTER images, and we also presentuda dense mapping of the 1992 Mw 7.3 Landers earthquake ofudCalifornia, from the mosaicking of 30 pairs of aerial images.