Seabed sediment data (upper 6 cm) on grain size, water content, total nitrogen, total carbon, total organic carbon, total inorganic carbon, carbon and nitrogen isotopic composition from the Nansen Legacy seasonal cruise 2019706 (Q3). ...

• 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-490057692; http://metadata.nmdc.no/metadata-api/landingpage/f79d8821ecdab3fd5d6197b56fe6142a

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 2019706 (Q3) in the northern Barents Sea. Sediment material was subsampled from three replicate deployments of a giant box corer at six stations (P1 to SICE4). The samples were immediately sliced into 1 cm layers (0 - 6 cm) and placed into plastic jars, and frozen on board. 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 carbon to be liberated as CO2. The samples were then neutralized by repetitively washing ...