The area extends over 28.5 x 30.0 kilometers.
This damage assessment map (processing by ParBleu Technologies Inc.) is produced by superimposition of the temporal changes detected in RADARSAT-1 imagery (16 July 2003 used as a reference, 24 September 2004, and 30 September 2004 on top of a LANDSAT-7 panchromatic image dated 3rd July 2003.
Hence, the colours correspond to changes observed by RADARSAT-1, whereas the LANDSAT-7 image is used as a background map. As a consequence, the locations where no significant changes were detected appear in grey tones.
It is noteworthy that the changes detected over extended areas correspond often to potential damage to vegetation and crop cultivations (characterized by their geometrical shape).
This map is produced in cartographic projection UTM (Universal Transverse Mercator) Zone 18 Q, with Earth ellipsoid WGS 1984 (GPS).
UTM Coordinates:
Upper Left Corner : Northing 2193728, Easting 728035
Lower Right Corner : Northing 2163728, Easting 756535
The spatial resolution is 15.0 meters x 15.0 meters.
Interpretation keys :
Blue tones | Areas that became flooded or water-saturated
in the period between the 24th and the 30th of September. |
Red tones | Areas that were either flooded, or water-saturated
on September 24th, and drained on September 30th (flood recession). |
Violet & pink tones | Areas that were either flooded or water-saturated
during the whole period of the observations (24-30 September). |
Green tones | Sedimentation areas and mud deposits. |
Grey tones | No significant effects. |
Produced by PARBLEU TECHNOLOGIES Inc. under mandate of the CANADIAN SPACE AGENCY.
(Standing Offer for Disaster Management Information Products and Services; PWGSC File Number 9F028-014927/008/ST)
Original RADARSAT-1 images: Copyright Canadian Space Agency / Agence Spatiale Canadienne, 2004.
Original LANDSAT-7 ETM+ image: Courtesy of the University of Maryland, Global Land Cover Facility
Copyright (C) PARBLEU Technologies Inc., October 2004