The Canadian Space Agency (CSA) in collaboration with the United States Geological Survey (USGS) and the National Aeronautics and Space Administration (NASA) launched in August 2006 an announcement of opportunity entitled Innovative Research And Development Into The Application Of Radarsat-1 Interferometric Data For Subsidence Mapping In New Orleans; referred as the DELTA project. The primary objective of this cooperative initiative was to stimulate new innovative R & D projects in interferometric applications using RADARSAT-1 data and innovative mapping approaches to better illustrate subsidence.
This project has been initiated in the wake of Hurricane Katrina for which differential interferometric techniques have demonstrated that the city of New Orleans was in a gradual process of sinking prior to Katrina. The CSA, USGS and NASA are of the view that Katrina has captured the interest of researchers and presents a challenge for them to identify new approaches, applications and potential for mapping dynamic terrain displacements, such as subsidence.
One of the important concluding milestones for the DELTA Project was to conduct a final project workshop in which the Principal Investigators had the opportunity to present a summary of their research activities and results. The forum chosen for this workshop was the PECORA 17 Symposium held in Denver (Colorado) from November 16 to November 20 (www.asprs.org/Pecora17/).
In addition to presentation made by USGS and CSA, the results of 5 projects have been presented to the participants. Research results and final reports will be made available in the coming weeks on the DELTA project website: http://gisdata.usgs.net/nors/.