Citation:

PANGAEA.919811

Name: n-Alkanes of sediment core PG2412 beneath thermokarst lake Goltsovoye Lake on the Bykovsky Pensinula, northeastern Siberia
Published: 2020-07-03
License: https://creativecommons.org/licenses/by/4.0/
Keywords: n-alkanes; organic matter degradability; permafrost carbon storage; Russian Arctic; talik; thermokarst lake; Yedoma deposits

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Published: 2020-07-03 • DOI registered: 2020-08-13

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Abstract:

These datasets describe a 31.5 m long sediment core taken from beneath thermokarst lake Goltsovoye Lake (71.74515 N, 129.30217 E) on the Bykovsky Peninsula, northeastern Siberia. The thermokarst lake was 510 cm deep. Here, we report the depths from the ice surface as well as from the sediment surface.

This dataset presents the n-alkane data from samples from sediment core PG2412. Concentrations of n-alkanes in the range n-C23 to n-C33 are given in µg/g sediment and µg/g TOC. From the n-alkane concentrations, we calculated the following indices: average chain length (ACL), carbon preference index (CPI), odd-over-even predominance (OEP), n-Alkane ratio, aquatic plant proxy (Paq) and terrestrial plant proxy (Pwax).

Keyword(s):

n-alkanes; organic matter degradability; permafrost carbon storage; Russian Arctic; talik; thermokarst lake; Yedoma deposits

Project(s):

Permafrost Research (AWI_Perma)

Coverage:

Latitude: 71.745150 * Longitude: 129.302170

Date/Time Start: 2017-04-18T00:00:00 * Date/Time End: 2017-04-21T00:00:00

Minimum DEPTH, sediment/rock: 0.475 m * Maximum DEPTH, sediment/rock: 31.525 m

Event(s):

PG2412 * Latitude: 71.745150 * Longitude: 129.302170 * Date/Time Start: 2017-04-18T00:00:00 * Date/Time End: 2017-04-21T00:00:00 * Lake water depth: 5.10 m * Location: Goltsovoye Lake, Siberia, Russia * Campaign: (Bykovsky_2017_spring) * Basis: AWI Arctic Land Expedition * Method/Device: Piston corer, UWITEC (PCUWI)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Identification	ID		Jongejans, Loeka Laura	GFZ German Research Center for Geosciences, sample ID
2	Depth, reference	Depth ref	m	Jongejans, Loeka Laura	bottom of sampling interval from ice surface
3	Depth, reference	Depth ref	m	Jongejans, Loeka Laura	bottom of sampling interval from ice surface
4	DEPTH, sediment/rock	Depth sed	m	Jongejans, Loeka Laura	Geocode
5	n-Alkane C23, per unit sediment mass	C23/sed	µg/g	Jongejans, Loeka Laura
6	n-Alkane C24, per unit sediment mass	C24/sed	µg/g	Jongejans, Loeka Laura
7	n-Alkane C25, per unit sediment mass	C25/sed	µg/g	Jongejans, Loeka Laura
8	n-Alkane C26, per unit sediment mass	C26/sed	µg/g	Jongejans, Loeka Laura
9	n-Alkane C27, per unit sediment mass	C27/sed	µg/g	Jongejans, Loeka Laura
10	n-Alkane C28, per unit sediment mass	C28/sed	µg/g	Jongejans, Loeka Laura
11	n-Alkane C29, per unit sediment mass	C29/sed	µg/g	Jongejans, Loeka Laura
12	n-Alkane C30, per unit sediment mass	C30/sed	µg/g	Jongejans, Loeka Laura
13	n-Alkane C31, per unit sediment mass	C31/sed	µg/g	Jongejans, Loeka Laura
14	n-Alkane C32, per unit sediment mass	C32/sed	µg/g	Jongejans, Loeka Laura
15	n-Alkane C33, per unit sediment mass	C33/sed	µg/g	Jongejans, Loeka Laura
16	n-Alkane C23, per unit mass total organic carbon	C23/TOC	µg/g	Jongejans, Loeka Laura
17	n-Alkane C24, per unit mass total organic carbon	C24/TOC	µg/g	Jongejans, Loeka Laura
18	n-Alkane C25, per unit mass total organic carbon	C25/TOC	µg/g	Jongejans, Loeka Laura
19	n-Alkane C26, per unit mass total organic carbon	C26/TOC	µg/g	Jongejans, Loeka Laura
20	n-Alkane C27, per unit mass total organic carbon	C27/TOC	µg/g	Jongejans, Loeka Laura
21	n-Alkane C28, per unit mass total organic carbon	C28/TOC	µg/g	Jongejans, Loeka Laura
22	n-Alkane C29, per unit mass total organic carbon	C29/TOC	µg/g	Jongejans, Loeka Laura
23	n-Alkane C30, per unit mass total organic carbon	C30/TOC	µg/g	Jongejans, Loeka Laura
24	n-Alkane C31, per unit mass total organic carbon	C31/TOC	µg/g	Jongejans, Loeka Laura
25	n-Alkane C32, per unit mass total organic carbon	C32/TOC	µg/g	Jongejans, Loeka Laura
26	n-Alkane C33, per unit mass total organic carbon	C33/TOC	µg/g	Jongejans, Loeka Laura
27	Average chain length	ACL		Jongejans, Loeka Laura
28	Carbon Preference Index	CPI		Jongejans, Loeka Laura
29	Odd-even predominance index	OEP		Jongejans, Loeka Laura
30	Ratio	Ratio		Jongejans, Loeka Laura	(n-C33 + n-C33)/(n-C27 + n-C33 + n-C33) n-Alkane ratio
31	Ratio	Ratio		Jongejans, Loeka Laura	Aquatic plant proxy (n-C23 + n-C25)/(n-C23 + n-C25 + n-C29 + n-C31)
32	Ratio	Ratio		Jongejans, Loeka Laura	Terrestrial plant proxy (n-C27 + n-C29 + n-C31)/(n-C23 + n-C25 + n-C27 + n-C29 + n-C31)

License:

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

Size:

614 data points

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Datasets with similar metadata

Biskaborn, BK; Sens, M (in review): Biogeochemical and radiocarbon data of sediment core PG2420 (Lake Goltsovoye, Bykovsky Peninsula, Arctic Siberia). https://doi.pangaea.de/10.1594/PANGAEA.918729
Jongejans, LL; Liebner, S; Knoblauch, C et al. (2021): n-Alkane concentration in thawed sediments underneath a Yedoma and Alas thermokarst lake in Eastern Siberia. https://doi.org/10.1594/PANGAEA.928134
Spangenberg, I; Overduin, PP; Damm, E et al. (2020): Dissolved methane and hydrochemical parameters in ice cores from April 2017 of a bay, thermokarst lagoon, and thermokarst lake, Bykovsky Peninsula, Lena Delta area. https://doi.org/10.1594/PANGAEA.913642