Method for inverting glacier thickness by using airborne gravity anomaly

The invention discloses a method for inverting glacier thickness by using airborne gravity anomaly, which belongs to the technical field of airborne gravity measurement, and comprises the following steps: acquiring actually measured airborne gravity data, and carrying out potential field separation on the airborne gravity data to obtain gravity anomaly data caused by an ice-rock interface; the method comprises the following steps: dividing a glacier into a plurality of rectangular cylinders which are horizontally arranged side by side according to actually measured airborne gravity data; performing forward modeling calculation of fitting gravity anomalies on the fluctuating ice-rock interface elevation model on the airborne gravity observation surface, and calculating the gravity anomalies of all observation points; constructing a target function of regularization inversion, obtaining a correction amount of an ice-rock interface elevation model, and iteratively updating the ice-rock interface elevation; and r