Seabed sediment data (upper 6 cm) on water content, total nitrogen, total carbon, total organic carbon, total inorganic carbon, carbon and nitrogen isotopic composition from the Nansen Legacy seasonal cruise 2021703 (Q1). ...

• Main Author: Freitas, Thaise
• Format: Dataset
• Language: unknown
• Published: University of Oslo 2022
• Subjects: Barents Sea
• Online Access: https://dx.doi.org/10.21335/nmdc-1821375519; http://metadata.nmdc.no/metadata-api/landingpage/c841ed7f83cbf3e81e3e8c276f5f59eb

This dataset includes contents of water content, total nitrogen (TN), total carbon (TC), total organic carbon (TOC), total inorganic carbon (TIC), and carbon and nitrogen isotopic composition (d13C, d15N) in marine sediments. Samples were collected during the Nansen Legacy cruises in March as part of cruise 2021703 (Q1) in the northern Barents Sea. Sediment material was subsampled from three replicate deployments of a giant box corer at four stations (P1 to P6). At P7, only two deployments were completed. The samples were immediately sliced into 1 cm layers (0 - 6 cm) and placed into plastic jars, and frozen on board. Two replicates at P1 were sliced down to 3 cm. All samples were freeze-dried under vacuum in the laboratory and homogenized. Elemental analysis of carbon and nitrogen concentrations was undertaken with an Elemental Analyser - Isotope Ratio Mass Spectrometry (EA-IRMS; Iso - Analytical Ltd., UK). Before d13C analysis, samples were acidified with 1M HCl and left overnight to allow the inorganic ...