Physical oceanography, nutrients, and δ¹⁸O measured on water bottle samples during POLARSTERN cruise ARK-XXII/2 ...

Extremely low summer sea-ice coverage in the Arctic Ocean in 2007 allowed extensive sampling and a wide quasi-synoptic hydrographic and d18O dataset could be collected in the Eurasian Basin and the Makarov Basin up to the Alpha Ridge and the East Siberian continental margin. With the aim of determin...

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Bibliographic Details
Main Authors: Bauch, Dorothea, Rutgers van der Loeff, Michiel M, Andersen, Nils, Torres-Valdés, Sinhué, Bakker, Karel, Abrahamsen, Einar Povl
Format: Dataset
Language:English
Published: PANGAEA 2011
Subjects:
Event label
Date/Time of event
Latitude of event
Longitude of event
Elevation of event
DEPTH, water
Pressure, water
Temperature, water
Salinity
Temperature, water, potential
Density, sigma-theta 0
Oxygen
Transmission of light
Phosphate
Silicate
Nitrate and Nitrite
Nitrite
δ18O
Bottle number
CTD/Rosette
CTD/Rosette, ultra clean
CTD, Sea-Bird SBE 911plus
Calculated from pressure, temperature, and conductivity
Calculated
Mass spectrometry
ARK-XXII/2
Polarstern
Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES
Arctic
Arctic Ocean
Laptev Sea
Pacific
Makarov Basin
Alpha Ridge
alpha ridge
laptev
makarov basin
Sea ice
Online Access:https://dx.doi.org/10.1594/pangaea.763451
https://doi.pangaea.de/10.1594/PANGAEA.763451
Description
Summary:Extremely low summer sea-ice coverage in the Arctic Ocean in 2007 allowed extensive sampling and a wide quasi-synoptic hydrographic and d18O dataset could be collected in the Eurasian Basin and the Makarov Basin up to the Alpha Ridge and the East Siberian continental margin. With the aim of determining the origin of freshwater in the halocline, fractions of river water and sea-ice meltwater in the upper 150 m were quantified by a combination of salinity and d18O in the Eurasian Basin. Two methods, applying the preformed phosphate concentration (PO*) and the nitrate-to-phosphate ratio (N/P), were compared to further differentiate the marine fraction into Atlantic and Pacific-derived contributions. While PO*-based assessments systematically underestimate the contribution of Pacific-derived waters, N/P-based calculations overestimate Pacific-derived waters within the Transpolar Drift due to denitrification in bottom sediments at the Laptev Sea continental margin.Within the Eurasian Basin a west to east oriented ... : Physical oceanography and nutrients extracted from doi:10.1594/PANGAEA.759286 ...

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