Extended Data Fig. 5: Raw data used for calculation of ACC strength at IODP Site U1540 and Site U1541.
From: Five million years of Antarctic Circumpolar Current strength variability
a, ACC strength records relative to the Holocene mean. b, Absolute ACC strength record calculated from sortable-silt data using a formula from the Scotia Sea in ref. 27 (see Methods). c, Sortable-silt record calculated from ln(Zr/Rb) using our calibration from discrete grain-size measurement (Extended Data Fig. 10; see Methods). d, ln(Zr/Rb) record (interpolated to 0.5 kyr and nine-point adjacent averaged).
