InSARteknologioilla

Interferometric Synthetic Aperture Radar, commonly known as InSAR, is a remote sensing technique used to measure surface deformation. It utilizes radar signals from satellites to create detailed maps of changes on the Earth's surface over time. The core principle involves comparing two or more radar images of the same area taken at different times. By analyzing the phase differences in the reflected radar waves, even minuscule changes in elevation, on the order of millimeters, can be detected.

InSAR technology is particularly effective for monitoring slow-moving phenomena. This includes the deformation of the Earth's crust associated with earthquakes, volcanic activity, and tectonic plate movements. It can also track the subsidence caused by groundwater extraction, mining, and the thawing of permafrost. Furthermore, InSAR is employed to measure the strain on infrastructure like bridges and dams, and to monitor changes in glaciers and ice sheets, providing crucial data for climate change research. The accuracy and wide-area coverage of InSAR make it an invaluable tool for geologists, hydrologists, and engineers.