image: Map of the Arctic Ocean, with shelf-derived materials (such as nutrients, carbon, trace metals, and radium) shown in green. The levels of radium measured on the 2015 US GEOTRACES expedition are shown in the green shading, with the highest levels near the North Pole. Shelf-derived materials are carried from the East Siberian Shelf to the central Arctic in the Transpolar Drift. This material relates to a paper that appeared in the 03 January 2018, issue of Science Advances, published by AAAS. The paper, by L.E. Kipp at Woods Hole Oceanographic Institution in Woods Hole, MA, and colleagues was titled, "Increased fluxes of shelf-derived materials to the central Arctic Ocean." view more
Credit: [Credit: N. Renier]