ERS-2 detail of the Inn River

An ERS-2 multitemporal radar composite of a stretch of the Inn River along the German/Austrian border in the vicinity of Braunau. The Inn River is one of several rivers reported to be experiencing surges following Alpine valley floods in late August 2005. Like its sister spacecraft Envisat, ERS-2 carries a Synthetic Aperture Radar (SAR) instrument that can look through clouds, rain or local darkness. This is a composite of two radar images, one acquired on 20 July 2005, the other acquired 24 August 2005. Dark blue and black colours indicate water surfaces.