Dissolved major element concentration data of the Southern Ocean transect from the OISO-31/SWINGS cruise MD229
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2026
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| _version_ | 1867169172512833536 |
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| author | O'Sullivan, Edel Mary Steiner, Zvi |
| author_facet | O'Sullivan, Edel Mary Steiner, Zvi |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This dataset presents salinity-normalized dissolved major element (Ca, Mg, K, Sr, Li) concentrations in the Indian Ocean Sector of the Southern Ocean collected on board the N/O Marion-Dufresne during the MD229 expedition (OISO-31/SWINGS cruise,La Réunion to La Réunion, January 11th - March 8th 2021). Samples were collected using Go-Flo bottles loaded onto a Trace Metal Clean Rosette (TMR, General Oceanics Inc. Model 1018 Intelligent Rosette), attached to a 6 mm Kevlar line. Samples were filtered using a 0.45 µm polyethersulfone filter (Supor®) and collected in 15mL LDPE bottles. All samples were acidified within 24 h of collection with ultrapure hydrochloric acid (HCl, Merck, 0.2%, final pH 1.7).Samples were analysed for Na, Ca, Mg, K, Li and Sr using a Varian-720 ES ICP-OES. Samples were diluted by a factor of 78-82 in 0.12 M HCl to the same final salinity. Multiple spectral lines were selected for each element, and samples were corrected for instrumental drift by sample-standard bracketing with IAPSO P157 diluted to the same final salinity. Calibration was performed on 7 dilutions of IAPSO P157. Element-to-sodium ratios were calculated for all combinations of spectral lines. Assuming a constant Na-to-salinity (PSU)=35 ratio, the element/Na ratios were multiplied by 0.46847 µmol kg-1 to obtain the salinity (PSU)-normalized element concentration, and by the ratio of practical to absolute salinity (TEOS-10). The TEOS-10 absolute salinities were calculated from EOS-80 values using the Gibb's Oceanographic Toolbox using the R package 'gsw' (v 1.1-1). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_988111 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Dissolved major element concentration data of the Southern Ocean transect from the OISO-31/SWINGS cruise MD229 O'Sullivan, Edel Mary Steiner, Zvi calcium; Calcium; Calcium, standard deviation; Calculated; CTD; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Event label; FISH; Fish undulating, recording system tow; ICP-OES, VARIAN 720-ES; LATITUDE; Lithium; Lithium, standard deviation; LONGITUDE; Magnesium; Magnesium, standard deviation; major elements; Marion Dufresne (1995); MD229; MD229_FISH; OISO/SWINGS; Potassium; Potassium, standard deviation; Salinity; Sample code/label; Southern Ocean; Station label; Strontium; Strontium, standard deviation; SWG_05_018; SWG_11_034; SWG_16_047; SWG_21_058; SWG_29_077; SWG_31_082; SWG_32_084; SWG_35_093; SWG_36_098; SWG_38_102; SWG_40_109; SWG_42_112; SWG_44_117; SWG_45_122; SWG_48_134; SWG_58_144; SWG_63_156; SWG_65_159; SWG_66_163; SWG_68_169; Temperature, water This dataset presents salinity-normalized dissolved major element (Ca, Mg, K, Sr, Li) concentrations in the Indian Ocean Sector of the Southern Ocean collected on board the N/O Marion-Dufresne during the MD229 expedition (OISO-31/SWINGS cruise,La Réunion to La Réunion, January 11th - March 8th 2021). Samples were collected using Go-Flo bottles loaded onto a Trace Metal Clean Rosette (TMR, General Oceanics Inc. Model 1018 Intelligent Rosette), attached to a 6 mm Kevlar line. Samples were filtered using a 0.45 µm polyethersulfone filter (Supor®) and collected in 15mL LDPE bottles. All samples were acidified within 24 h of collection with ultrapure hydrochloric acid (HCl, Merck, 0.2%, final pH 1.7).Samples were analysed for Na, Ca, Mg, K, Li and Sr using a Varian-720 ES ICP-OES. Samples were diluted by a factor of 78-82 in 0.12 M HCl to the same final salinity. Multiple spectral lines were selected for each element, and samples were corrected for instrumental drift by sample-standard bracketing with IAPSO P157 diluted to the same final salinity. Calibration was performed on 7 dilutions of IAPSO P157. Element-to-sodium ratios were calculated for all combinations of spectral lines. Assuming a constant Na-to-salinity (PSU)=35 ratio, the element/Na ratios were multiplied by 0.46847 µmol kg-1 to obtain the salinity (PSU)-normalized element concentration, and by the ratio of practical to absolute salinity (TEOS-10). The TEOS-10 absolute salinities were calculated from EOS-80 values using the Gibb's Oceanographic Toolbox using the R package 'gsw' (v 1.1-1). |
| title | Dissolved major element concentration data of the Southern Ocean transect from the OISO-31/SWINGS cruise MD229 |
| topic | calcium; Calcium; Calcium, standard deviation; Calculated; CTD; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Event label; FISH; Fish undulating, recording system tow; ICP-OES, VARIAN 720-ES; LATITUDE; Lithium; Lithium, standard deviation; LONGITUDE; Magnesium; Magnesium, standard deviation; major elements; Marion Dufresne (1995); MD229; MD229_FISH; OISO/SWINGS; Potassium; Potassium, standard deviation; Salinity; Sample code/label; Southern Ocean; Station label; Strontium; Strontium, standard deviation; SWG_05_018; SWG_11_034; SWG_16_047; SWG_21_058; SWG_29_077; SWG_31_082; SWG_32_084; SWG_35_093; SWG_36_098; SWG_38_102; SWG_40_109; SWG_42_112; SWG_44_117; SWG_45_122; SWG_48_134; SWG_58_144; SWG_63_156; SWG_65_159; SWG_66_163; SWG_68_169; Temperature, water |
| url | https://doi.org/10.1594/PANGAEA.988111 |