Extended Data Fig. 4: Image Analysis example.
From: Sensitivity of Holocene East Antarctic productivity to subdecadal variability set by sea ice
From left to right: Line-scan core photo, CT image, raw greyscale curve with light laminae picks in orange, and XRF titanium data. The CT image visually enhances the laminations, and provides a sub-mm resolved greyscale curve that better captures the rapid shifts in sedimentation. Frequencies from the manually picked laminae (Fig. 3d) match those extracted from the greyscale curve (Fig. 4).
