Fig. 1: Changes in ACC flow speed along a north–south transect from the SAZ to the AZ in the South Indian Ocean over the last glacial cycle. | Nature Geoscience

Fig. 1: Changes in ACC flow speed along a north–south transect from the SAZ to the AZ in the South Indian Ocean over the last glacial cycle.

From: Zonally asymmetric changes in the Antarctic Circumpolar Current strength over the past million years

Fig. 1: Changes in ACC flow speed along a north–south transect from the SAZ to the AZ in the South Indian Ocean over the last glacial cycle.

a, Modern surface ACC velocity map. The oceanic fronts are as derived from in situ measurements and satellite altimetry10. Core locations are marked by white circles (this study, based on \(\overline{{\rm{SS}}}\) proxy) and diamonds (based on magnetic grain size; Extended Data Fig. 3). b, ACC strength variations in the SAZ between the STF and SAF (MD11-3354 and MD12-3396, eastern Kerguelen Plateau). c, ACC strength variations in the Polar Frontal Zone (PFZ) between the SAF and PF (MD12-3394, western Kerguelen Plateau). d,e, ACC strength variations in the AZ between the PF and SACCF (PS2606-6 and PS2609-1, Conrad Rise; MD84-551, southern Kerguelen Plateau). f, Antarctic temperature record from the Dome Fuji ice core47. Vertical grey bars mark the glacial periods during Marine Isotope Stages 2, 4 and 6. Basemap in a from GMRT61 with data from GODAS62 under a Creative Commons license CC BY 4.0.

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