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  • PANGAEA  (2)
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  • 1
    facet.materialart.
    Unknown
    Dissolved and particulate barium concentrations and isotopes in the Rainbow non-buoyant hydrothermal plume during METEOR cruise M176/2 (2023)
    PANGAEA
    Details
    Publication Date: 2023-11-25
    Description: 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.
    Keywords: Barium, dissolved; Barium, labile particulate; Barium, particulate; Barium, particulate, refractory; Barium (Ba); Barium excess, particulate; Barium isotopes; calculated, 2 sigma; CTD/Rosette, ultra clean; CTD-UC; Depth, bathymetric; Depth, reference; DEPTH, 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; Sample code/label; South Atlantic Ocean; Station label; δ138Ba, dissolved; δ138Ba, labile particulate; δ138Ba, labile particulate, standard deviation; δ138Ba, particulate, refractory; δ138Ba, particulate, refractory, standard deviation; δ138Ba, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1706 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Dissolved barium and silicon isotopes at the Congo River-dominated Southeast Atlantic margin from METEOR cruise M121 (GEOTRACES cruise GA08) (2023)
    PANGAEA
    Details
    Publication Date: 2024-02-02
    Description: To better understand the association between barium (Ba) and silicon (Si) at ocean margins, we collected filtered seawater samples along the Congo River plume at the coast of Congo and Gabon and along an off-shelf section at 3°S, complemented by three freshwater samples collected directly from the Congo River. The water samples from the Congo margin were collected during GEOTRACES cruise GA08 with German RV Meteor (M121) in November-December 2015 with a stainless steel CTD rosette and a towed fish for surface waters. Congo River freshwater samples were taken upstream by boat in May, July and October 2017 near the center of the river at ~6°S and ~12.5°E (stations 12.1-12.3). We determine for the first time Ba and Si stable isotopes at the Congo River-dominated Southeast Atlantic margin. Based on these data we evaluate the contribution of Congo River plume to Ba and Si budgets in the South East Atlantic Ocean, and the association between Ba and Si at the Congo margin.
    Keywords: 13.1; 15.1; 15.2; 15.3; 16.1; Angola Basin; Barium; Barium, dissolved, anomaly; Barium isotopes; BigMAR; Congo_River_12-1; Congo_River_12-2; Congo_River_12-3; Congo River Plume; CTD/Rosette; CTD-RO; DEPTH, water; Event label; GA08; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; IFISH; Iron fish; LATITUDE; LONGITUDE; M121; M121_1200-1; M121_1201-1; M121_1202-1; M121_1202-1_fish65; M121_1206-1; M121_1210-1; M121_1210-1_fish69-15.1; M121_1210-1_fish69-15.2; M121_1210-1_fish69-15.3; M121_1212-1; M121_1214-1; M121_1214-1_fish77; M121_1218-1; M121_1222-1; M121_1224-1; M121_1226-1; M121_1228-1; M121_1230-1; M121_1232-1; M121_1234-1; M121_1236-1; M121_1238-1; M121_1240-1; M121_1243-1; M121_1247-1; M121_1248-1; M121_1250-1; M121_Fish65; M121_Fish67; M121_Fish68; M121_Fish69; M121_Fish71; M121_Fish74; M121_Fish76; M121_Fish77; M121_Fish83; M121_Fish84; M121_Fish85; M121_Fish86; M121_Fish90; M122; M123; M124; M125; M126; M127; M128; M129; M130; M132; M133; Meteor (1986); Replicates; RIVER; SACROSS; Salinity; SAMBA; Sample code/label; Sampling river; Silicon; Silicon isotopes; Southeast Atlantic; Standard deviation; Station label; TAG_field; Temperature, water; Type; δ138Ba; δ29Si; δ30Si
    Type: Dataset
    Format: text/tab-separated-values, 1252 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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