Abstract
Radioactivity levels of 210Pb and 226Ra were detected in a sediment core obtained using a multi-corer from the polymetallic nodule area inside the Clarion-Clipperton Zone (CCZ), a contract area of the China Ocean Mineral Resources Association (COMR) in the eastern Pacific Ocean. The profile of excess 210Pb (210Pbex) shows that the specific activity of 210Pbex has three parts with different distributions at depths of 0–16 cm (I), 17–36 cm (II), and 37–48 cm (III). When the I section of nonlocal mixing was excluded, using a steady-state diffusion mode, the bioturbation coefficients of the core were estimated to be 24.2 cm2/a at 17–36 cm deep and 5.9 cm2/a at 37–48 cm deep, which were greater compared to previously published results. This is most likely owing to bioturbations caused by various organism species in the two sections.
Funder
the Scientific Research Foundation of Third Institute of Oceanography
Subject
Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science
Reference25 articles.
1. Polymetallic nodules distribution in the central pacific basin and comparison with nodules in China pioneer area, CC Zone;Wang;Mar. Geol. Quat. Geol.,2015
2. Critical metals in manganese nodules from the Cook Islands EEZ, abundances and distributions
3. Biophysical controls on organic carbon fluxes in fluvial networks
4. Macrofaunal Burrows and Irrigation in Marine Sediment: Microbiological and Biogeochemical Interactions. Interactions between Macro-and Microorganisms in Marine Sediments;Kristensen,2005
5. Trace Metal Retention on Biogenic Manganese Oxide Nanoparticles
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