Sediment trap fluxes and stable isotopes of particulate carbon, nitrogen and biogenic silica from the Scotia Sea in 2018

Results of sediment trap analysis conducted by British Antarctic Survey, University of Edinburgh and University of Bristol. Particulate fluxes and isotopic compositions of particulate organic carbon, nitrogen and biogenic silica are presented. Data from two sediment traps deployed in the Scotia Sea, Southern Ocean, are presented (shallow=400 m, and deep = 2000 m), with 14 samples for each spread across the year 2018 to capture the seasonal cycle from January to December. Each sample was split into multiple fractions for these multiple analyses. Data facilitate the understanding of the magnitude and drivers of particulate fluxes in the Scotia Sea, Southern Ocean.

Work funded by NC-ALI funding to the British Antarctic Survey Ecosystems programme. Sian Henley supported by: NE/K010034/1.

Date (Creation): 2023-07-13

Date (Revision): 2023-07-13

Date (Publication): 2023-07-13

Date (released): 2023-07-13

Edition: 1.0

Unique resource identifier: https://doi.org/10.5285/32629396-bafc-40bd-ab6f-3dea5f3e51c1

Codespace: doi

Unique resource identifier: GB/NERC/BAS/PDC/01761

Codespace: https://data.bas.ac.uk/

Unique resource identifier: NE/K010034/1

Codespace: award

Other citation details: Please cite this item as: Belcher, A., Henley, S.F., Hendry, K.R., Friberg, L., Dallman, U., Wang, T., & Manno, C. (2023). Sediment trap fluxes and stable isotopes of particulate carbon, nitrogen and biogenic silica from the Scotia Sea in 2018 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/32629396-bafc-40bd-ab6f-3dea5f3e51c1

Credit: No credit.

Status: Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Belcher, Anna		Author
University of Edinburgh	Henley, Sian F.		Author
British Antarctic Survey	Hendry, Katharine R.		Author
University of Bristol	Friberg, Lisa		Author
University of Edinburgh	Dallman, Ursula		Author
University of Bristol	Wang, Tong		Author
British Antarctic Survey	Manno, Clara		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency: As needed

Maintenance note: Completed

Global Change Master Directory (GCMD) Science Keywords

Theme

Biogenic silica
Isotopic composition
Particle flux
Particulate nitrogen
Particulate organic carbon
Sediment Trap

Place

Scotia Sea Southern Ocean

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Spatial representation type: Text, table

Language: English

Character set: UTF8

Topic category

Biota
Environment
Oceans

Begin date: 2018-01-25

End date: 2018-12-31

Supplemental Information: It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title: European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication): 2008-11-12

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Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier: urn:ogc:def:crs:EPSG::3031

Version: 6.18.3

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NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Distributor

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Statement: Methodology:

Two sediment traps (McLane PARFLUX, shallow=400 m, deep=2000 m) were deployed on a long term mooring station (P3-Scotia Sea Open Ocean Observatory (SCOOBIES: https://www.bas.ac.uk/project/scoobies/), located at: -52.8036, -40.1593 at 3748 m water depth. Sediment traps were deployed in January 2018 aboard research cruise JR17002 and recovered in January 2019 aboard research cruise DY098. Each sediment trap collected 14 samples, open for periods of 7-31 days, which, on return to the laboratory were split into multiple aliquots for subsequent analysis. Splits were taken for particulate organic carbon (POC), particulate nitrogen (PN), biogenic silica (BSi, SiO2), as well as stable isotopes delta13CPOC, delta15NPN and delta 30SiBSi. For full details of laboratory analyses of these splits, see Belcher et al. in review.

Data collection:

Sample collection: McLane PARFLUX Sediment Trap

Sample splitting: McLane Sample Splitter

POC and PN: CE-440 Elemental analyser (Exeter Analytical.285 Inc)

delta13Cpoc and delta15NPN: Thermo Finnigan Delta-Plus Advantage mass spectrometer

BSi: Hach DR3900 spectrophotometer

delta30SiBSi.: Finnigan Neptune Plus High Resolution MC-ICP-MS (Thermo Fisher Scientific)

Data quality:

We note that the mooring itself experienced periods of higher flow in June 2018 and late August/September 2018 and thus particle collection may be biased at this time.

For each flux measurement, we present the maximum and minimum measurement resulting from analyses of 2 replicate splits (for a couple of samples, 3 replicates were measured, and again the maximum and minimum are given here).

Reproducibility of delta13Cpoc and delta15NPN is 0.2 per mille based on repeat measurements of analytical standards.

For delta 30Si, solutions were measured in replicate (n = 2-3) alongside continuous measurement of reference standards Diatomite and LMG-08 to ensure reproducibility and to monitor data quality. Measurements of Diatomite and LMG-08 yielded delta 30Si of +1.23 per mille (SD ± 0.03, n=18) and -3.40 per mille (SD ± 0.05, n=5) respectively, which agreed with published values. Typical reproducibility between the sample pseudo replicates was 0.04 per mille (1 x SD). Not all samples were able to be successfully analysed for delta 30SiBSi. and these are denoted by ND (=No Data).

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File identifier: 32629396-bafc-40bd-ab6f-3dea5f3e51c1 XML

Metadata language: English

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Hierarchy level name: dataset

Date stamp: 2023-07-13

Metadata standard name: ISO 19115 Geographic Information - Metadata

Metadata standard version: ISO 19115:2003(E)

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Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact

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