Abstract: One 3 meters long gravity core was obtained in Powell basin, which located in the northeast of Antarctic peninsula, and then the AMS (Anisotropy of Magnetic Susceptibility) and paleomagnetism data was acquired through analysis by KLY-3s and 2G superconducting magnetometer. An remarkable plus inclination stage was identified in the depth of 2.73m, which should be in accord with the Matsuyama reversed polarity time, from which we calculated that the sedimentation rate is 0.35cm/ka from now to BP.780ka. At the same time, 5 warm climate periods were identified by the analysis of magnetic susceptibility and grain size characteristics in this core, and there are 3 obvious gradual climate transition stages between warn periods, which changed from warm to cold, and then from cold to warm. From the analysis of maximum axis angle of AMS, we found that  the paleocurrent direction was not obvious in the warm period, the flow direction changed frequently, but the  paleocurrent direction  approximated to north or south in the transition period between the warm periods.

Key words: magnetic fabric, paleomagnetism, marine sediment, Powell Basin, Antarctica