Citation:

PANGAEA.967485

Name: Geochemical data for SOB14-A-21, a Lena Delta 1st terrace exposure
Published: 2024-05-08
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Arctic Delta; Carbon; Lena Delta; Nitrogen; permafrost

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Abstract:

The Holocene delta deposit (1st terrace) exposure SOB14-A-21 (72.53671°N, 127.98945°E) was sampled on 17 August 2014 North of Sobo-Sise Island in the Lena Delta during the framework of the joint Russian-German Expedition LENA 2014. The surface (top) of the exposure was characterized by mosses and sedges. The exposure itself was predominately sandy with few organic remnants. The top organic layer is thin (1.5 cm) and the active layer depth could not be determined exactly. However, the top 170 cm of the exposure were unfrozen although the thaw front might not only be from the top down but also horizontally due to the nature of the exposure. The exposure was first cleaned with a spade and then sampled with a knife and a hole saw from top to bottom. The entire exposure had a depth of 605 cm whereof the bottom 35 cm consisted of ice. Every 25 cm a sample was collected resulting in 22 samples (20 sediment samples and 2 ice samples). The samples were kept cool during the transport and later analyzed in the laboratory for bulk density, total organic carbon, and total nitrogen with a Vario EL III Elemental Analyzer. Prior to analysis, samples were freeze-dried, homogenized, and ground before measuring the samples with the elemental analyzer. The ice samples were not analyzed.

Keyword(s):

Arctic Delta; Carbon; Lena Delta; Nitrogen; permafrost

Related to:

Fuchs, Matthias; Grosse, Guido; Strauss, Jens; Günther, Frank; Grigoriev, Mikhail N; Maximov, Georgy M; Hugelius, Gustaf (2017): Sample site characteristics including mean SOC and SN for permafrost cores collected on Sobo-Sise Island and Bykovsky Peninsula. PANGAEA, https://doi.org/10.1594/PANGAEA.883582

Project(s):

Permafrost Research (AWI_Perma)

Rapid Permafrost Thaw in a Warming Arctic and Impacts on the Soil Organic Carbon Pool (PETA-CARB)

Funding:

Seventh Framework Programme (FP7), grant/award no. 338335 : Rapid Permafrost Thaw in a Warming Arctic and Impacts on the Soil Organic Carbon Pool

Coverage:

Latitude: 72.536710 * Longitude: 127.989450

Date/Time Start: 2014-08-17T00:00:00 * Date/Time End: 2014-08-17T00:00:00

Minimum DEPTH, sediment/rock: 0.0075 m * Maximum DEPTH, sediment/rock: 6.0250 m

Event(s):

PG-SOB14-A-21 * Latitude: 72.536710 * Longitude: 127.989450 * Date/Time: 2014-08-17T00:00:00 * Recovery: 6.05 m * Campaign: (Lena_Delta_Sobo-Byk_2014) * Basis: AWI Arctic Land Expedition * Method/Device: Exposure (EXPO)

Comment:

Some cells were left empty. This means that this data was not collected or it was not possible to calculate this value.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Site	Site		Fuchs, Matthias		Profile Site
2	Sample code/label	Sample label		Fuchs, Matthias
3	DATE/TIME	Date/Time		Fuchs, Matthias		Geocode – Date of collection
4	LATITUDE	Latitude		Fuchs, Matthias		Geocode
5	LONGITUDE	Longitude		Fuchs, Matthias		Geocode
6	Sampling	Sampling		Fuchs, Matthias		Sampling strategy
7	Type	Type		Fuchs, Matthias
8	Depth, top/min	Depth top	m	Fuchs, Matthias
9	Depth, bottom/max	Depth bot	m	Fuchs, Matthias
10	DEPTH, sediment/rock	Depth sed	m	Fuchs, Matthias		Geocode
11	Sample thickness	Samp thick	cm	Fuchs, Matthias		length of sample
12	Sample volume	Samp vol	cm³	Fuchs, Matthias
13	Sample, wet mass	Samp wet m	g	Fuchs, Matthias
14	Sample, dry mass	Samp dm	g	Fuchs, Matthias
15	Water loss per dry weight	Water loss dry wgt	g	Fuchs, Matthias		wet weight - dry weight
16	Water loss per dry weight	Water loss dry wgt	%	Fuchs, Matthias
17	Ice content, gravimetric	Grav ice cont	%	Fuchs, Matthias
18	Ice content, volumetric	Vol ice cont	%	Fuchs, Matthias
19	Size fraction > 2 mm, gravel	>2 mm	%	Fuchs, Matthias		Coarse fragments (>2mm)
20	Density, wet bulk	WBD	g/cm³	Fuchs, Matthias
21	Density, dry bulk	DBD	g/cm³	Fuchs, Matthias
22	Carbon, organic, total	TOC	%	Fuchs, Matthias	Carbon and nitrogen and sulfur (CNS) isotope element analyzer, Elementar, Vario EL III
23	Nitrogen, total	TN	%	Fuchs, Matthias	Carbon and nitrogen and sulfur (CNS) isotope element analyzer, Elementar, Vario EL III
24	Carbon/Nitrogen ratio	C/N		Fuchs, Matthias
25	Soil organic carbon storage	SOC storage	kg/m²	Fuchs, Matthias
26	Soil total nitrogen storage	STN storage	kg/m²	Fuchs, Matthias
27	Sample comment	Sample comment		Fuchs, Matthias		Sample state
28	Description	Description		Fuchs, Matthias

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

480 data points

Data

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

1 Site	2 Sample label	3 Date/Time	4 Latitude	5 Longitude	6 Sampling	7 Type	8 Depth top [m]	9 Depth bot [m]	10 Depth sed [m]	11 Samp thick [cm]	12 Samp vol [cm³]	13 Samp wet m [g]	14 Samp dm [g]	15 Water loss dry wgt [g]	16 Water loss dry wgt [%]	17 Grav ice cont [%]	18 Vol ice cont [%]	20 WBD [g/cm³]	21 DBD [g/cm³]	22 TOC [%]	23 TN [%]	24 C/N	25 SOC storage [kg/m²]	26 STN storage [kg/m²]	27 Sample comment	28 Description
SOB14-A-21	SOB14-A-21-01	2014-08-17	72.53671	127.98945	fixed volume (knife)	Sediment	0.00	0.015	0.0075	1.5	33.8	31.5	26.1	5.4	17.1			0.93	0.77	2.59	0.138	18.74	0.30	0.02	thawed	Organic layer
SOB14-A-21	SOB14-A-21-02	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	0.05	0.100	0.0750	5.0	96.2	129.2	118.6	10.6	8.2			1.34	1.23	1.13	0.110	10.35	0.70	0.07	thawed	Sand, light brown-yellowish
SOB14-A-21	SOB14-A-21-03	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	0.30	0.350	0.3250	5.0	96.2	139.6	128.7	10.9	7.8			1.45	1.34	0.72	<0.100		0.48		thawed	Sand, light brown-yellowish, transition to orange stripes and dark brown sand
SOB14-A-21	SOB14-A-21-04	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	0.60	0.650	0.6250	5.0	96.2	142.9	130.7	12.2	8.5			1.49	1.36	0.74	<0.100		0.50		thawed	Sand, darkbrown
SOB14-A-21	SOB14-A-21-05	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	0.90	0.950	0.9250	5.0	96.2	137.6	127.2	10.4	7.6			1.43	1.32	0.76	<0.100		0.50		thawed	Sand, darkbrown
SOB14-A-21	SOB14-A-21-06	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	1.20	1.250	1.2250	5.0	96.2	130.0	114.5	15.5	11.9			1.35	1.19	1.40	0.122	11.48	0.83	0.07	thawed	Sand, darkbrown
SOB14-A-21	SOB14-A-21-07	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	1.50	1.550	1.5250	5.0	96.2	148.5	123.8	24.7	16.6			1.54	1.29	1.57	0.128	12.22	1.01	0.08	thawed	Sand, darkbrown
SOB14-A-21	SOB14-A-21-08	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	1.80	1.850	1.8250	5.0	96.2	181.3	136.2	45.1	24.9	33.1	46.9	1.88	1.42	1.05	<0.100		0.74		frozen	Peatinclusion in sand
SOB14-A-21	SOB14-A-21-09	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	2.10	2.150	2.1250	5.0	96.2	201.6	153.5	48.1	23.9	31.3	50.0	2.10	1.60	0.97	<0.100		0.78		frozen	Peatinclusion in silty sand, grey
SOB14-A-21	SOB14-A-21-10	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	2.40	2.450	2.4250	5.0	96.2	182.7	139.0	43.7	23.9	31.4	45.4	1.90	1.45	0.85	0.100	8.48	0.61	0.07	frozen	Sand, grey, peat remnants visible
SOB14-A-21	SOB14-A-21-11	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	2.70	2.750	2.7250	5.0	96.2	144.6	88.3	56.3	38.9	63.8	58.5	1.50	0.92	2.56	0.146	17.56	1.18	0.07	frozen	Sand (grey) with organic inclusions (black), organic remnants (peat, wood) visible
SOB14-A-21	SOB14-A-21-12	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	3.00	3.050	3.0250	5.0	96.2	176.3	140.7	35.6	20.2	25.3	37.0	1.83	1.46	0.77	<0.100		0.57		frozen	Sand, darkgrey, peat remnants visible
SOB14-A-21	SOB14-A-21-13	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	3.30	3.350	3.3250	5.0	96.2	123.9	61.7	62.2	50.2	100.8	64.7	1.29	0.64	4.79	0.179	26.74	1.54	0.06	frozen	Peatinclsuion in sand, darkgrey/black
SOB14-A-21	SOB14-A-21-14	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	3.60	3.650	3.6250	5.0	96.2	133.0	62.2	70.8	53.2	113.8	73.6	1.38	0.65	3.76	0.259	14.55	1.22	0.08	frozen	Sand, darkgrey/black with peat inclusions
SOB14-A-21	SOB14-A-21-15	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	3.90	3.950	3.9250	5.0	96.2	127.4	53.1	74.3	58.3	139.9	77.2	1.32	0.55	2.57	0.197	13.07	0.71	0.05	frozen	Sand, darkgrey/black with only few peat inclusions
SOB14-A-21	SOB14-A-21-16	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	4.20	4.250	4.2250	5.0	96.2	138.1	64.6	73.5	53.2	113.8	76.4	1.44	0.67	3.60	0.268	13.40	1.21	0.09	frozen	Sand, grey/black
SOB14-A-21	SOB14-A-21-17	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	4.50	4.550	4.5250	5.0	96.2	115.5	59.5	56.0	48.5	94.1	58.2	1.20	0.62	3.61	0.292	12.36	1.11	0.09	frozen	Sand with organic remants
SOB14-A-21	SOB14-A-21-18	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	4.80	4.850	4.8250	5.0	96.2	118.4	36.8	81.6	68.9	221.7	84.8	1.23	0.38	4.60	0.294	15.64	0.88	0.06	frozen	Sand with peat inclusion
SOB14-A-21	SOB14-A-21-19	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	5.10	5.150	5.1250	5.0	96.2	151.5	79.7	71.8	47.4	90.1	74.6	1.58	0.83	3.62	0.176	20.58	1.50	0.07	frozen	Sand with low decomposed peat, darkgrey/black
SOB14-A-21	SOB14-A-21-20	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Sediment	5.40	5.450	5.4250	5.0	96.2	125.1	68.8	56.3	45.0	81.8	58.5	1.30	0.72	2.25	0.185	12.12	0.80	0.07	frozen	Sand with low decomposed peat
SOB14-A-21	SOB14-A-21-21	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Ice	5.70	5.750	5.7250	5.0	96.2	45.7						0.48							frozen	Ice
SOB14-A-21	SOB14-A-21-22	2014-08-17	72.53671	127.98945	fixed volume (holesaw)	Ice	6.00	6.050	6.0250	5.0	96.2	45.7						0.48							frozen	Ice