Fig. 4From: Postseismic gravity changes after the 2011 Tohoku earthquake observed by superconducting gravimeters at Mizusawa, Japana (black line) Vertical displacement obtained from the daily solutions of GNSS observations at Mizusawa from 2014 to 2021. (red line) Result of fitting a numerical function to the GNSS data based on the method of Tobita (2016). b (gray line) Residual gravity data observed at Mizusawa. (black line) The same but after the correction of free-air effects. The red curve represents the result of fitting Eq. (4) to the dataBack to article page