Yellowstone interferogram from Sentinel-1 spanning September 22, 2020 to September 17, 2021

Interferogram created from data collected on September 22, 2020, and September 17, 2021, by the Sentinel-1 satellite system. Colored fringes indicate a change in distance (called range change) between the satellite and ground surface that is caused by surface deformation. In this interferogram, the fringes indicate subsidence (an increase in the range between the ground and the satellite) of as much as 3 centimeters (slightly more than 1 inch) in the central part of Yellowstone Caldera, and uplift of about 1.5 centimeters (less than 1 inch) of a small area south of Norris Geyser Basin during the period spanned by the images. White circles show earthquakes that occurred during the time spanned by the interferogram. Circle size scales with magnitude, with the largest about magnitude 3.6.