Fig. 3: Comparison of the ACC flow speeds in the Drake Passage region. | Nature Communications

Fig. 3: Comparison of the ACC flow speeds in the Drake Passage region.

From: Orbital- and millennial-scale Antarctic Circumpolar Current variability in Drake Passage over the past 140,000 years

Fig. 3

a Range of modern Drake Passage cumulative volume transport from south to north along Jason Track 10436 and SR1b69. b Mean cross-track surface geostrophic velocities36. c Bottom flow speeds are transferred by the latest calibration in the Drake Passage region26 and the new \(\overline{{{{\rm{SSFS}}}}}\) flow speed proxy explained in Supplementary Fig. 6. Orange and blue dots mark ACC flow speeds during the Holocene and LGM5,6,7,8, respectively. Orange and blue stars indicate flow speed in the Drake Passage during the MIS 5e and PGM, respectively. d Glacial-interglacial (G-IG) flow speed differences associated with frontal system. Larger glacial reductions of flow velocities are detected in north of the SAF (cores 1-4, see Table S2)6,7,8 and the PF (core 5, this study) compared to small changes south of the PF (cores 6–17;5 see Supplementary Table 2). SAF Subantarctic Front, PF Polar Front, SACCF southern ACC Front.

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