Yellowstone interferogram from Sentinel-1 spanning September 29, 2021, to October 6, 2022

Interferogram created from data collected on September 29, 2021, and October 6, 2022, 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 slightly less subsidence of a small area along the north rim of Yellowstone Caldera, south of Norris Geyser Basin.  White circles show earthquakes that occurred during the time spanned by the interferogram. Circle size scales with magnitude, with the largest equaling magnitude 4.2.