中文摘要：

利用最新的纯GOCE重力场模型GO_CONS_GCF_2_T1M_R4及由多源多代卫星测高数据确定的精细平均海平面高模型wHU2009，基于地转平衡方程确定了南极绕极流，其流幅的变化趋势与由海洋实测数据获取的SAF和PF锋面保持一致。将其分别与GRACE、多源数据同化模型CNES-CLS09和NOAA海洋实测数据结果进行了比较分析，结果表明，确定南极绕极流在M、口方向与海洋实测结果差异分别为10．1cm／s和5．3cm／s；在大尺度上，结果与同化模型和实测数据结果具有较好的一致性，明显优于GRACE结果，并且在大陆沿岸附近海域略优于多源数据同化模型cNES-CLS09；此外，利用本结果还可有效探测威德尔旋回和罗斯旋回等中尺度涡。

英文摘要：

The Antarctic Circumpolar Current（ACC） is an important factor effecting global o- cean and climate systems. Based on the WHU2009 mean sea surface height model derived from multi-altimetric data, the newest satellite-only GOCE gravity field model GO_CONS_ GCF 2 TIM_R4 is used to determine the Antarctic Circumpolar Current through the geo- strophic balance equation, the trend of its width variations is consistent with the Subantarctic and Polar fronts of the ACC derived from in situ measurements. To confirm that the ACC re- sults in this paper are reliable, three different types of models were compared with our mod- el. Comparative results show that： the difference between our model and the in-situ meas- urements provided by NOAA was 10.1 cm/s in u direction and 5.3 cm/s in v direction; The ACC results presented in this paper are consistent with the CNES-CLS09 model and the NO- AA results at the large scale, as well as superior to the result from GRACE, and also slight- ly better than CNES-CLS09 in offshore areas. In addition, some meso-scale eddies like the Wed- del Gyre and Ross Gyre are also determined from the ACC results presented in this paper.