Citation:

PANGAEA.984732

Name: δ13C results of bulk organic matter in marine surface sediments from the Laptev Sea, Arctic Ocean
Published: 2025-09-09
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Arctic Ocean; Laptev Sea; Marine surface sediments; δ13C

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Published: 2025-09-09 • DOI registered: 2025-10-08

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Abstract:

The data were obtained from marine surface sediments (0-1 cm depth) from the Laptev Sea during three research expeditions. Samples were retrieved using box corers and multiple corers, and the sediments were dried immediately after subsampling. Sample pretreatment and measurements were carried out at the AWI ISOLAB Facility - Stable Isotope Laboratory Potsdam (see https://registry.o2a-data.de/items/7986) and CNR-ISP in Bologna. For samples analyzed at the ISOLAB Facility, samples were ground, acidified with 6 M HCl at 60 °C for three hours and dried before sending to the ISOLAB Facility. At the ISOLAB Facility, acidified samples were homogenized and weighed into tin capsules. The amount of sample used for δ13C analysis was based on TOC content, aiming for 0.2 mg of organic carbon per measurement. Analyses were performed using a Thermo Fisher Scientific Delta-V-Advantage gas mass spectrometer coupled with a FLASH elemental analyzer EA 2000 and a CONFLO IV gas mixing system (see https://registry.o2a-data.de/items/7984). At CNR-ISP, approximately 15 mg of sediment was weighed into silver boats, acidified with 1.5 M HCl, and dried at 55 ˚C. The samples were analyzed using a Thermo Fisher Scientific DeltaQ IRMS coupled with a FLASH 2000 CHNS Analyzer via a CONFLO IV gas mixing system. The standard deviation (1σ) of δ13C measurement was generally better ±0.15‰ for the ISOLAB Facility, and better than ±0.1‰ in CNR-ISP.

Keyword(s):

Arctic Ocean; Laptev Sea; Marine surface sediments; δ13C

Additional metadata:

SENSOR: Metadata for laboratory ISOLAB Facility - Stable Isotope Laboratory Potsdam at current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, hdl:10013/sensor.ddc92f54-4c63-492d-81c7-696260694001

SENSOR: Metadata for mass spectrometer ThermoFisher Scientific Delta-V-Advantage at current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, hdl:10013/sensor.1df540c8-1409-43bf-a237-9af0cd871fca

Funding:

Helmholtz Association of German Research Centres (HGF), grant/award no. PIE-0018: German-Italian partnership project between AWI and CNR-ISP on Chronologies for Polar Paleoclimate Archives (PAIGE)

Coverage:

Median Latitude: 76.317390 * Median Longitude: 127.340310 * South-bound Latitude: 72.550000 * West-bound Longitude: 113.996667 * North-bound Latitude: 79.226667 * East-bound Longitude: 137.551667

Date/Time Start: 1993-08-11T00:00:00 * Date/Time End: 1995-08-17T00:00:00

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.005 m

Event(s):

IK93Z2-8 * Latitude: 73.666667 * Longitude: 113.996667 * Date/Time: 1993-08-11T00:00:00 * Elevation: -9.0 m * Location: Laptev Sea * Campaign: * Basis: Ivan Kireyev * Method/Device: Box corer (Reineck) (BCR)

IK9307-3 * Latitude: 72.550000 * Longitude: 131.296667 * Date/Time: 1993-08-31T00:00:00 * Elevation: -21.0 m * Recovery: 0.29 m * Location: Laptev Sea * Campaign: * Basis: Ivan Kireyev * Method/Device: Box corer (Reineck) (BCR)

IK9318-5 * Latitude: 73.496667 * Longitude: 137.551667 * Date/Time: 1993-08-21T00:00:00 * Elevation: -24.0 m * Recovery: 0.45 m * Location: Laptev Sea * Campaign: * Basis: Ivan Kireyev * Method/Device: Box corer (Reineck) (BCR)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Lin, Tsai-Wen
2	DEPTH, sediment/rock	Depth sed	m	Lin, Tsai-Wen		Geocode
3	Depth, top/min	Depth top	m	Lin, Tsai-Wen
4	Depth, bottom/max	Depth bot	m	Lin, Tsai-Wen
5	δ13C, organic matter	δ13C OM	‰ PDB	Lin, Tsai-Wen	Element analyser (EA)	Bulk; vs. VPDB
6	Comment	Comment		Lin, Tsai-Wen

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

64 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Depth sed [m]	4 Depth bot [m]	5 δ13C OM [‰ PDB]	6 Comment
IK9318-5	0.005	0.01	-25.9	Measured at ISOLAB Facility, Potsdam
IK9350-6	0.005	0.01	-24.9	Measured at ISOLAB Facility, Potsdam
IK9307-3	0.005	0.01	-25.7	Measured at ISOLAB Facility, Potsdam
IK9327-6	0.005	0.01	-24.4	Measured at ISOLAB Facility, Potsdam
IK9330-5	0.005	0.01	-25.3	Measured at ISOLAB Facility, Potsdam
IK9340-9	0.005	0.01	-25.0	Measured at CNR-ISP, Bologna
IK93Z2-8	0.005	0.01	-26.8	Measured at ISOLAB Facility, Potsdam
PS2458-3	0.005	0.01	-22.5	Measured at ISOLAB Facility, Potsdam
PS2461-2	0.005	0.01	-23.0	Measured at ISOLAB Facility, Potsdam
PS2462-3	0.005	0.01	-23.2	Measured at ISOLAB Facility, Potsdam
PS2470-1	0.005	0.01	-21.8	Measured at ISOLAB Facility, Potsdam
PS2472-3	0.005	0.01	-22.0	Measured at ISOLAB Facility, Potsdam
PS2474-2	0.005	0.01	-21.9	Measured at ISOLAB Facility, Potsdam
PS2478-3	0.005	0.01	-22.7	Measured at ISOLAB Facility, Potsdam
PS2747-8	0.005	0.01	-23.0	Measured at CNR-ISP, Bologna
PS2749-3	0.005	0.01	-22.5	Measured at ISOLAB Facility, Potsdam