Particulate Th-234, organic carbon, organic nitrogen and biogenic silica concentrations in size-fractionated particles in the Labrador Sea in spring 2022
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2025
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| _version_ | 1867171899356741632 |
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| author | Roca-Martí, Montserrat Healey, Madeline Kienast, Stephanie S |
| author_facet | Roca-Martí, Montserrat Healey, Madeline Kienast, Stephanie S |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Particulate Th-234, organic carbon (POC), organic nitrogen (PON) and biogenic silica (bSi) concentrations in size-fractionated particles in the Labrador Sea from 19 May to 2 June 2022 during the BELAS-1 expedition (CE22009, RV Celtic Explorer). Size-fractionated particles were collected using battery-powered in-situ large volume pumps (McLane Research Laboratories, Inc.) equipped with a three-tier 142-mm diameter filter holder (MULVFS style; Bishop et al., 2012; Lam et al., 2015). Pumps were deployed at depths between 50 and 500 m. The filter holders contained three filters: two Nitex screens (335 and 51 µm nominal pore size, acid-leached prior to the cruise) above a pre-combusted QMA filter (~1 µm nominal pore size, Graff et al., 2023) for size fractionation (1–51, 51–335 and >335 μm). Th-234 was measured using low-level Risø beta multicounters. POC and PON were analyzed using high-temperature combustion (Costech Instruments Elemental Combustion System 4010) after acid fumigation. bSi was analyzed following the NaOH digestion method (40 min at 95ºC) using a UV-Visible Spectrophotometer (Genesys 10S, Thermo Scientific). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_983961 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Particulate Th-234, organic carbon, organic nitrogen and biogenic silica concentrations in size-fractionated particles in the Labrador Sea in spring 2022 Roca-Martí, Montserrat Healey, Madeline Kienast, Stephanie S BELAS-1; Biogenic silica; Biogenic silica, standard deviation; Carbon, organic, particulate; Carbon, organic, particulate, standard deviation; CE22009; CE22009_12_Day-LVP; CE22009_15_Day-LVP; CE22009_24_Day-LVP; CE22009_28_Day_2-LVP; CE22009_6_Day-LVP; CE22009_9_Day-LVP; CE22009_PREGRID_STN3-LVP; Celtic Explorer; DATE/TIME; DEPTH, water; Elemental Analyser, COSTECH, ECS4010; Event label; In situ pump, McLane Research Laboratories, WTS-LV; Labrador Sea; LATITUDE; LONGITUDE; Low-level Risø beta multicounters; LVP_cast_1; LVP_cast_2; LVP_cast_3; LVP_cast_4; LVP_cast_5; LVP_cast_6; LVP_cast_7; Nitrogen, organic, particulate; Nitrogen, organic, particulate, standard deviation; Spectrophotometer UV/VIS, Thermo Fisher Scientific, Genesys 10; Thorium-234, particulate; Thorium-234, particulate, standard deviation; Uranium-Thorium Particulate Th-234, organic carbon (POC), organic nitrogen (PON) and biogenic silica (bSi) concentrations in size-fractionated particles in the Labrador Sea from 19 May to 2 June 2022 during the BELAS-1 expedition (CE22009, RV Celtic Explorer). Size-fractionated particles were collected using battery-powered in-situ large volume pumps (McLane Research Laboratories, Inc.) equipped with a three-tier 142-mm diameter filter holder (MULVFS style; Bishop et al., 2012; Lam et al., 2015). Pumps were deployed at depths between 50 and 500 m. The filter holders contained three filters: two Nitex screens (335 and 51 µm nominal pore size, acid-leached prior to the cruise) above a pre-combusted QMA filter (~1 µm nominal pore size, Graff et al., 2023) for size fractionation (1–51, 51–335 and >335 μm). Th-234 was measured using low-level Risø beta multicounters. POC and PON were analyzed using high-temperature combustion (Costech Instruments Elemental Combustion System 4010) after acid fumigation. bSi was analyzed following the NaOH digestion method (40 min at 95ºC) using a UV-Visible Spectrophotometer (Genesys 10S, Thermo Scientific). |
| title | Particulate Th-234, organic carbon, organic nitrogen and biogenic silica concentrations in size-fractionated particles in the Labrador Sea in spring 2022 |
| topic | BELAS-1; Biogenic silica; Biogenic silica, standard deviation; Carbon, organic, particulate; Carbon, organic, particulate, standard deviation; CE22009; CE22009_12_Day-LVP; CE22009_15_Day-LVP; CE22009_24_Day-LVP; CE22009_28_Day_2-LVP; CE22009_6_Day-LVP; CE22009_9_Day-LVP; CE22009_PREGRID_STN3-LVP; Celtic Explorer; DATE/TIME; DEPTH, water; Elemental Analyser, COSTECH, ECS4010; Event label; In situ pump, McLane Research Laboratories, WTS-LV; Labrador Sea; LATITUDE; LONGITUDE; Low-level Risø beta multicounters; LVP_cast_1; LVP_cast_2; LVP_cast_3; LVP_cast_4; LVP_cast_5; LVP_cast_6; LVP_cast_7; Nitrogen, organic, particulate; Nitrogen, organic, particulate, standard deviation; Spectrophotometer UV/VIS, Thermo Fisher Scientific, Genesys 10; Thorium-234, particulate; Thorium-234, particulate, standard deviation; Uranium-Thorium |
| url | https://doi.org/10.1594/PANGAEA.983961 |