TerraSAR-X captures Images as Grafton Floods begin to recede
Friday, May 29th, 2009Following up to TerraSAR-X captures detailed radar image of Grafton Floods. Apogee and Infoterra have tasked the TerraSAR-X satellite to acquire a ScanSAR image over the Northern New South Wales coast on the 28th May, to complement the StripMap image acquired on the 24th May. The additional ScanSAR image enhances the information that was available from the single StripMap image. Allowing Apogee to extract more information about the extent of the flooding and how the floods have receded between the two acquisition dates.
This composite below combines the TerraSAR-X StripMap acquired on the 24th of May with the TerraSAR-X ScanSAR image acquired on the 28th of May. The flooding can clearly be seen, where the Red areas show flood level on the 24th of May and the Dark areas show where there is still standing water. Below the composite the seperate StripMap and ScanSAR images show that in this area the water has receded almost completely.
Below the composite TerraSAR-X image shows the flooding extent in Grafton Northern NSW. Red areas in the composite show where there was flooding on the 24th of May, while Dark areas show where there is still flooding. The composite clearly shows that while flooding in the Grafton area has receded, there is still a significant amount of flooding around Grafton. This information is valuable for both managing recovery response during flooding emergency and planning for the emergency response for similar future disasters.
