InSARa

InSARa is a term that refers to interferometric synthetic aperture radar (InSAR) data acquired from the Indian Remote Sensing Satellite series. These satellites, operated by the Indian Space Research Organisation (ISRO), carry SAR instruments capable of generating radar imagery. When two such SAR images of the same area acquired at different times are processed using interferometry, the resulting interferogram can reveal subtle changes on the Earth's surface.

The technique of InSAR allows for the precise measurement of ground deformation, such as that caused by earthquakes, volcanic activity, land subsidence, or glacier movement. By analyzing the phase difference between the two SAR signals, scientists can detect millimeter-scale changes in elevation. InSARa specifically refers to the application of this powerful technique using data from ISRO's satellites. This enables monitoring of geohazards and environmental changes across India and surrounding regions. The availability of InSARa data contributes to improved understanding of Earth processes and supports disaster management efforts. Its applications span various fields including geodesy, geology, and environmental science.