Abstract: The ice-flow velocity of Antarctic glaciers play an important role in the mass balance study of Antarctic. In this study, a rotation parameter of SIFT algorithm was added into a traditional ice-flow velocity derivation method based on Normalized Cross-Correlation algorithm, making the method with rotation invariance. Based on this improved method, the ice-flow velocity of Polar Record Glacier in East Antarctica was derived using Landsat8 OLI data. Accuracy assessment was done using simulated data and MEaSUREs velocity data released by NASA. The results indicated that in the direction of velocity changed area, more ice-flow velocity can be derived. The maximum velocity of Polar Record could reach 870m/a. Compared with the MEaSUREs data, the average offset is 23.9m/a.

Key words: Polar Record Glacier, ice-flow velocity, Normalized Cross Correlation(NCC), rotation invariance