Dissolved and particulate barium concentrations and isotopes in the Rainbow non-buoyant hydrothermal plume (German cruise M176/2)

• Main Authors: Zhang, Zhouling, Zhou, Linbin, Achterberg, Eric Pieter, Frank, Martin
• Format: Dataset
• Language: English
• Published: PANGAEA
• Subjects: Barium; particulate; Barium (Ba); Barium-138; Barium excess; Barium isotopes; Bottle number; CTD/Rosette; ultra clean; CTD-UC; Depth; bathymetric; reference; water; Event label; GPF 21‐2_049; Rainbow Plume; hydrothermal plume; LATITUDE; LONGITUDE; M176/2; M176/2_10-3; M176/2_12-1; M176/2_13-3; M176/2_14-3; M176/2_15-3; M176/2_16-1; M176/2_17-2; M176/2_18-2; M176/2_19-2; M176/2_21-2; M176/2_23-1; M176/2_24-2; M176/2_4-2; M176/2_5-2; M176/2_6-3; M176/2_7-2; M176/2_8-3; M176/2_9-2; Meteor (1986); Rainbow hydrothermal vent; South Atlantic Ocean; Standard deviation; Station label; δ138Ba; Mid-Atlantic Ridge
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.961129

In order to understand the hydrothermal input of barium (Ba) to the ocean interior and the changes of Ba in the hydrothermal plume, we measured dissolved (<0.2 μm) and particulate (>0.2 μm) Ba concentrations, as well as stable isotopes, in the non-buoyant hydrothermal plume at the Rainbow hydrothermal vent field on the Mid-Atlantic Ridge. Samples were taken during a GEOTRACES compliant cruise (M176/2) onboard the German R/V Meteor from September to October 2021. Particulate samples were first leached to measure labile components and then digested to measure refractory components. Our investigation covered the plume with a high spatial resolution, extending from a distance of 200 m to 60 km away from the Rainbow hydrothermal vent field.