What is this data?
In the years 1995-2000 ERS-2 satellite repeated approximately the orbit of the ERS-1 satellite with exactly 24 hour delay. This opened a new opportunity for InSAR studies of terrains with relatively fast motion rate and rapidly changing surface. This data proved very valuable for studying eg. the glacier motion.
Where is it available?
Information on the availability of ERS 1/2 tandem data of Icelandic glacier can be found here.