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Liguori, Bianca T P; Ehlert, Claudia; Nöthig, Eva-Maria; van Ooijen, Jan C; Pahnke, Katharina (2020): Silicon isotopes in surface waters during POLARSTERN cruise PS94 (ARK-XXIX/3) in 2015. PANGAEA, https://doi.org/10.1594/PANGAEA.920105

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Abstract:
In this study we present dissolved and particulate silicon isotope results in surface waters obtained as part of the GEOTRACES central Arctic Ocean section GN04 (2015) onboard POLARSTERN cruise PS94 (ARK-XXIX/3).
The aim of the study was to investigate in more detail the influence of the Transpolar Drift on the Si cycle in the AO comparing areas with and without its influence.
Keyword(s):
Arctic Ocean; PS94; Silicon isotopes
Supplement to:
Liguori, Bianca T P; Ehlert, Claudia; Nöthig, Eva-Maria; van Ooijen, Jan C; Pahnke, Katharina (2021): The Transpolar Drift Influence on the Arctic Ocean Silicon Cycle. Journal of Geophysical Research: Oceans, 126(11), https://doi.org/10.1029/2021JC017352
Further details:
De La Rocha, Christina L (2002): Measurement of silicon stable isotope natural abundances via multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS). Geochemistry, Geophysics, Geosystems, 3(8), 1-8, https://doi.org/10.1029/2002GC000310
Coverage:
Median Latitude: 86.112470 * Median Longitude: 69.490017 * South-bound Latitude: 81.847170 * West-bound Longitude: 0.212710 * North-bound Latitude: 89.014830 * East-bound Longitude: 179.874170
Date/Time Start: 2015-08-22T22:06:00 * Date/Time End: 2015-09-22T18:53:00
Minimum DEPTH, water: 10 m * Maximum DEPTH, water: 174 m
Event(s):
PS94/032-8 * Latitude Start: 81.847170 * Longitude Start: 30.851500 * Latitude End: 81.856330 * Longitude End: 30.917170 * Date/Time Start: 2015-08-22T22:06:00 * Date/Time End: 2015-08-23T03:01:00 * Elevation Start: -3168.5 m * Elevation End: -3162.2 m * Location: Arctic Ocean * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: In situ pump (ISP)
PS94/032-9 * Latitude: 81.856500 * Longitude: 30.915670 * Date/Time: 2015-08-23T03:30:00 * Elevation: -3162.7 m * Location: Arctic Ocean * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO)
PS94/040-3 * Latitude: 82.708830 * Longitude: 30.783500 * Date/Time: 2015-08-24T07:19:00 * Elevation: -3701.0 m * Location: Arctic Ocean * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO)
Comment:
Flag scheme in accordance to GEOTRACES quality flag policy. https://www.geotraces.org/geotraces-quality-flag-policy/
Notes:
*calculated δ30Si-DSi: Dissolved Silicon Isotope Composition calculated from δ29Si-DSi multiplied by 1.93 (De La Rocha, 2002)
* calculated 2SD δ30Si-DSi: Dissolved Silicon standard deviation calculated from δ29Si-DSi standard deviation multiplied by 1.93 (De La Rocha, 2002)
* calculated δ30Si-bSiO2: Biogenic Silica Isotope Composition calculated from δ29Si-bSiO2 multiplied by 1.93 (De La Rocha, 2002)
* calculated 2SD δ30Si-bSiO2: Biogenic Silica standard deviation calculated from δ29Si-bSiO2 standard deviation multiplied by 1.93 (De La Rocha, 2002)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventLiguori, Bianca T P
2Station labelStationLiguori, Bianca T PStation ID
3Cast numberCastLiguori, Bianca T P
4DATE/TIMEDate/TimeLiguori, Bianca T PGeocode – UTC
5LATITUDELatitudeLiguori, Bianca T PGeocode
6LONGITUDELongitudeLiguori, Bianca T PGeocode
7DEPTH, waterDepth watermLiguori, Bianca T PGeocode – Sample Depth
8δ29Si, silicon dissolvedδ29Si DSiLiguori, Bianca T Pδ29Si-DSi
9δ29Si, standard deviationδ29Si std dev±Liguori, Bianca T P2SD δ29Si-DSi
10Quality flagFlagLiguori, Bianca T PSeadatanet flag: Data quality control proceduresδ29Si-DSi
11δ30Si, silicon dissolvedδ30Si DSiLiguori, Bianca T PCalculated, see Commentδ30Si-DSi
12δ30Si, standard deviationδ30Si std dev±Liguori, Bianca T PCalculated, see Comment2SD δ30Si-DSi
13Quality flagFlagLiguori, Bianca T PSeadatanet flag: Data quality control proceduresδ30Si-DSi
14Number of measurementsn#Liguori, Bianca T Pδ30Si-DSi
15δ29Si, biogenic silicaδ29Si bSiO2Liguori, Bianca T Pδ29Si-bSiO2
16δ29Si, standard deviationδ29Si std dev±Liguori, Bianca T P2SD δ29Si-bSiO2
17Quality flagFlagLiguori, Bianca T PSeadatanet flag: Data quality control proceduresδ29Si-bSiO2
18δ30Si, biogenic silicaδ30Si bSiO2Liguori, Bianca T PCalculated, see Commentδ30Si-bSiO2
19δ30Si, standard deviationδ30Si std dev±Liguori, Bianca T PCalculated, see Comment2SD δ30Si-bSiO2
20Quality flagFlagLiguori, Bianca T PSeadatanet flag: Data quality control proceduresδ30Si-bSiO2
21Number of measurementsn#Liguori, Bianca T Pδ30Si-bSiO2
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
414 data points

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