Abstract: As typical poly-thermal glaciers, Austre Lovénbreen and Pedersenbreen were land-termilated valley glaciers in Svalbard, Arctic. During the 2009 research expedition of Chinese Arctic Yellow River Station, the glaciological research group measured these glaciers by differential Global Position System (GPS) and ground-penetrating radar (GPR). We combined the field acquired GPS and GPR data with power law model for glacial valleys, and presented the glacier valley parameters of Austre Lovénbreen and Peder-senbreen. We then determined the morphological characteristics of glacial bedrock according to the changes of cross-section parameters; analyzed the effect of bedrock erosion on glacial valley evolution; explored the relationship between glacial valley morphology and ice flow velocity by comparing the flow difference between Austre Lovénbreen and Pedersenbreen. The results indicated that glacial valley evolu-tion of Pedersenbreen was better than Austre Lovénbreen, and these glaciers have V-shaped instead of U-shaped valleys, but the evolution status of the two adjacent glaciers showed obvious differences. Ice flow velocity in Pedersenbreen was higher than that in Austre Lovénbreen. The main process of valley formation was lateral erosion in Pedersenbreen and bottom erosion in Austre Lovénbreen. These differ-ences are mainly caused by differences in the glacial valley topography.

Key words: glacial valley, Austre Lovénbreen, Pedersenbreen, power law model, glacier erosion