CASE STUDY: MOVEMENT BEFORE AND AFTER KATRINA (NASA/CSA)
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Objective of the project:
Hurricane Katrina caused major damage to the city of New Orleans. The objective of the project was to analyse areas of subsidence and uplift before and after Hurricane Katrina in order to provide useful information for identifying vulnerable zones. |
Analysis and results
The project was conducted with Radarsat-1 images, which were processed using DIAPASON software.
Average deformation maps were created for New Orleans. Specific "complex" project conditions were taken into account when processing data, such as: not all measurement points are comparable for pre- and post-flooding measurements since points may have changed dramatically. Futhermore, as the movement was not linear, due to the flooding, changes in the deformation pattern had to be considered.
The project was conducted with Radarsat-1 images, which were processed using DIAPASON software.
Average deformation maps were created for New Orleans. Specific "complex" project conditions were taken into account when processing data, such as: not all measurement points are comparable for pre- and post-flooding measurements since points may have changed dramatically. Futhermore, as the movement was not linear, due to the flooding, changes in the deformation pattern had to be considered.
Availability of archive data permits the comparison of subsidence and uplift
before and after hurricane Katrina.
before and after hurricane Katrina.
