Abstract: Reconstructing paleobathymetry around Antarctic first involves palinspastic reconstructions, which restore seafloor features and landmasses to their original geographic positions at a given point in time. In this paper we reconstruct the plate by using the Euler rotation method described by Greiner. And the Euler poles mainly refer to the finite poles based on the Atlantic-India ocean hotpots reference frame provided by Muller. Some parameters have been converted necessarily. Regions where oceanic crust is younger than the target age must be removed. We reconstruct 15 positions of the plates in and surround the Antarctica areas since 130 Ma using Matlab programming tools. Combing diverse data, we adjust the present-day bathymetry for the effects of thermally driven crustal subsidence, sedimentation, and isostatic rebound, and reconstruct the paleobathmatery south of 30°S. The paleobathmetry maps of different times have been made, and the evolution of Southern Ocean since 130 Ma has been analyzed briefly.

Key words: Antarctic, Euler rotate, Plate reconstruction, Paleobathymetry