Dissolved major element concentration data of the Equatorial Pacific Ocean transect during RV SONNE cruise SO298
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2025
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| _version_ | 1867169166944894976 |
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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 absolute salinity-normalized dissolved major element (Ca, Mg, K, Sr, Li) concentrations along RV SONNE cruise track SO298 along the Equatorial Pacific Ocean collected during GEOTRACES GP11 expedition (Guayaquil, Ecuador - Townsville, Australia) from April 14th to June 2nd, 2023. Samples were collected from the trace-metal clean Ti-frame rosette equipped with a Kevlar-coated winch. Samples were filtered through 0.2 µm AcroPak™ 500 filter capsules, collected in acid-cleaned 4 mL PP tubes, and acidified to pH ~2 with trace metal-grade HCl. 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 P166 diluted to the same final salinity. Calibration was performed on 7 dilutions of IAPSO P166. 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_977810 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Dissolved major element concentration data of the Equatorial Pacific Ocean transect during RV SONNE cruise SO298 O'Sullivan, Edel Mary Steiner, Zvi calcium; Calcium; Calculated; CTD; CTD/Rosette; CTD-RO; DEPTH, water; Equatorial Pacific; Event label; FISH; Fish undulating, recording system tow; GEOTRACES; GEOTRACES GP11; Global marine biogeochemical cycles of trace elements and their isotopes; ICP-OES, VARIAN 720-ES; LATITUDE; Lithium; LONGITUDE; Magnesium; Major element; Pacific Ocean; Potassium; Profile ID; Salinity; Salinity, absolute; Sample code/label; SO298; SO298_0_Underway-6; SO298_11-2; SO298_14-2; SO298_17-1; SO298_20-1; SO298_2-2; SO298_23-1; SO298_24-2; SO298_26-2; SO298_29-2; SO298_32-1; SO298_35-2; SO298_38-2; SO298_5-1; SO298_8-2; Sonne_2; Standard deviation; Strontium; Temperature, water This dataset presents absolute salinity-normalized dissolved major element (Ca, Mg, K, Sr, Li) concentrations along RV SONNE cruise track SO298 along the Equatorial Pacific Ocean collected during GEOTRACES GP11 expedition (Guayaquil, Ecuador - Townsville, Australia) from April 14th to June 2nd, 2023. Samples were collected from the trace-metal clean Ti-frame rosette equipped with a Kevlar-coated winch. Samples were filtered through 0.2 µm AcroPak™ 500 filter capsules, collected in acid-cleaned 4 mL PP tubes, and acidified to pH ~2 with trace metal-grade HCl. 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 P166 diluted to the same final salinity. Calibration was performed on 7 dilutions of IAPSO P166. 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 Equatorial Pacific Ocean transect during RV SONNE cruise SO298 |
| topic | calcium; Calcium; Calculated; CTD; CTD/Rosette; CTD-RO; DEPTH, water; Equatorial Pacific; Event label; FISH; Fish undulating, recording system tow; GEOTRACES; GEOTRACES GP11; Global marine biogeochemical cycles of trace elements and their isotopes; ICP-OES, VARIAN 720-ES; LATITUDE; Lithium; LONGITUDE; Magnesium; Major element; Pacific Ocean; Potassium; Profile ID; Salinity; Salinity, absolute; Sample code/label; SO298; SO298_0_Underway-6; SO298_11-2; SO298_14-2; SO298_17-1; SO298_20-1; SO298_2-2; SO298_23-1; SO298_24-2; SO298_26-2; SO298_29-2; SO298_32-1; SO298_35-2; SO298_38-2; SO298_5-1; SO298_8-2; Sonne_2; Standard deviation; Strontium; Temperature, water |
| url | https://doi.org/10.1594/PANGAEA.977810 |