Fig. 1: Porewater Re and U, as well as the bulk 224Ra/228Th disequilibria in the shelf sediments of the East China Sea.
From: Overlooked shelf sediment reductive sinks of dissolved rhenium and uranium in the modern ocean
Vertical profiles of Re and U in porewater (a, b) and the bulk 224Ra/228Th disequilibria in the sediments (c). The samples were collected within 10 days during the summer of 2017 and 5 days during the summer of 2021 and the winter of 2018. The horizontal dash line represents the sediment–water interface. The vertical bar in the panels of Re and U represents the average concentrations±1 SD (N = 23) measured in the water column of the East China Sea (see Supplementary Fig. 3). The vertical bar in the 224Ra/228Th panels denotes the overall uncertainty of the 224Ra/228Th ratios, with values lower than the left boundary denoting the release of 224Ra from sediments.
