Fig. 2: ACC strength changes over the past three glacial cycles (records along north–south transects from the SAZ to the AZ and west–east across the EPR in the SAZ) compared with Antarctic ice-core temperature and atmospheric CO2 records. | Nature

Fig. 2: ACC strength changes over the past three glacial cycles (records along north–south transects from the SAZ to the AZ and west–east across the EPR in the SAZ) compared with Antarctic ice-core temperature and atmospheric CO2 records.

From: Five million years of Antarctic Circumpolar Current strength variability

Fig. 2

a, Antarctic temperature record (EPICA Dome C (EDC) ice core)52. b, Atmospheric CO2 record (composite Antarctic ice cores)53. c, Reconstructed absolute ACC strength variations (cm s−1) from a cross-ACC transect, including the SAZ (Site U1540 and Site U1541), PFZ (cores PS75/76 and PS75/79) and AZ (core PS75/83) and across the EPR (eastern Site U1540 and western Site U1541). d, Reconstructed relative ACC strength variations (compared with Holocene mean values (dashed line)). e, Benthic foraminiferal δ13C records from core PS75/56 (same location as Site U1540) and core PS75/59 (same location as Site U1541). All sediment records were recovered from water depths bathed in Lower Circumpolar Deep Water masses at present. Numbers at top indicate MIS according to ref. 10.

Back to article page