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Fuchs, Matthias; Sachs, Torsten; Strauss, Jens; Jones, Benjamin M; Lenz, Josefine; Nitze, Ingmar; Grosse, Guido: Basic sedimentary characteristics from permafrost cores from the Noatak, Kobuk and Selawik deltas in Northwestern Alaska [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967494 (dataset in review), In: Fuchs, M et al.: Permafrost soil organic carbon and soil nitrogen data from the Noatak, Kobuk and Selawik river deltas in Northwestern Alaska [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967493 (dataset in review)

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Abstract:
This data set describes the soil core and sample characteristics from soil cores collected in the Noatak (67.03 N; -162.45 E), Kobuk (66.79 N; -161.37 E), and Selawik (66.58 N; -160.06 E) river deltas in Northwest Alaska during the AWI PETA-CARB West-Alaska 2016 field campaign. The soil cores were collected in August 2016 with a SIPRE (Snow, Ice and Permafrost Research Establishment, Fairbanks, Alaska) auger (diameter 2 inch). Prior to collecting the frozen permafrost cores, active layer was excavated, described, and sampled with a knife and a fixed volume cylinder. This data set includes the information on 26 different soil profiles and cores down to a depth of 2 m, resulting in 348 samples. The data table includes the sample characteristics including depth, volume, weight, water content, bulk density as well as measured total organic carbon (TOC), total nitrogen (TN), and carbon to nitrogen ratio (CN). TOC was analyzed with a Vario Max C elemental analyzer and TN was analyzed with a Vario EL III elemental analyzer in laboratories at Alfred Wegener Institute Potsdam. Prior to analysis, samples were weighted, freeze-dried, homogenized, ground and subsampled for the different analyzes.
Keyword(s):
Alaska; Arctic Delta; Carbon; Nitrogen; Permafrost
Related to:
Fuchs, Matthias; et al. (in prep.): Large stocks of permafrost soil organic carbon and nitrogen in Arctic river deltas.
Project(s):
Carbon in Permafrost / Kohlenstoff im Permafrost (KoPF)
Changing Arctic Carbon cycle in the cOastal Ocean Near-shore (CACOON)
NUNATARYUK, Permafrost thaw and the changing Arctic coast, science for socioeconomic adaptation (NUNATARYUK)
Permafrost Research (AWI_Perma)
Permafrost Research (Periglacial Dynamics) @ AWI (AWI_PerDyn)
Rapid Permafrost Thaw in a Warming Arctic and Impacts on the Soil Organic Carbon Pool (PETA-CARB)
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0806A: WTZ Großbritannien: CACOON - Veränderung des arktischen Kohlenstoffkreislaufs im küstennahen Ozean
Horizon 2020 (H2020), grant/award no. 773421: NUNATARYUK, Permafrost thaw and the changing Arctic coast, science for socioeconomic adaptation
Natural Environment Research Council (NERC), grant/award no. NE/R012806/1: Changing Arctic Carbon cycle in the cOastal Ocean Near-shore
Seventh Framework Programme (FP7), grant/award no. 338335: Rapid Permafrost Thaw in a Warming Arctic and Impacts on the Soil Organic Carbon Pool
Coverage:
Median Latitude: 66.791526 * Median Longitude: -161.583766 * South-bound Latitude: 66.559000 * West-bound Longitude: -162.405400 * North-bound Latitude: 67.054200 * East-bound Longitude: -160.238400
Date/Time Start: 2016-08-09T00:00:00 * Date/Time End: 2016-08-15T00:00:00
Minimum DEPTH, sediment/rock: 0.0200 m * Maximum DEPTH, sediment/rock: 2.3500 m
Event(s):
KOB16-T2-1 * Latitude: 66.722600 * Longitude: -161.499700 * Date/Time: 2016-08-12T00:00:00 * Location: Kobuk Delta * Campaign: AK-Land_2016_NorthwestAlaska (NWAlaska2016) * Basis: AWI Arctic Land Expedition * Method/Device: SIPRE Auger (SA)
KOB16-T2-2 * Latitude: 66.725300 * Longitude: -161.499600 * Date/Time: 2016-08-12T00:00:00 * Location: Kobuk Delta * Campaign: AK-Land_2016_NorthwestAlaska (NWAlaska2016) * Basis: AWI Arctic Land Expedition * Method/Device: SIPRE Auger (SA)
KOB16-T2-3 * Latitude: 66.728000 * Longitude: -161.499500 * Date/Time: 2016-08-12T00:00:00 * Location: Kobuk Delta * Campaign: AK-Land_2016_NorthwestAlaska (NWAlaska2016) * Basis: AWI Arctic Land Expedition * Method/Device: SIPRE Auger (SA)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1LocationLocationFuchs, MatthiasGeographic location, name of river delta
2Event labelEventFuchs, MatthiasName of the coring location
3Sample code/labelSample labelFuchs, Matthias
4DATE/TIMEDate/TimeFuchs, MatthiasGeocode – Date of collection
5LATITUDELatitudeFuchs, MatthiasGeocode
6LONGITUDELongitudeFuchs, MatthiasGeocode
7CommentCommentFuchs, MatthiasSoil layer: Active layer or permafrost layer
8SamplingSamplingFuchs, MatthiasSampling strategy: Knife = a fixed volume cube was cut out by knife; cylinder = a fixed volume (250 cm3) was collected with a metal cylinder; SIPRE = Snow, Ice and Permafrost Research Establishment (John's Machine Shop Fairbanks, USA), a drill to retrieve permafrost samples
9Depth, top/minDepth topmFuchs, Matthias
10Depth, bottom/maxDepth botmFuchs, Matthias
11DEPTH, sediment/rockDepth sedmFuchs, MatthiasGeocode
12Sample thicknessSamp thickcmFuchs, Matthiaslength of sample
13Sample volumeSamp volcm3Fuchs, MatthiasVolume of the sample at the time of sampling; empty cells: no volume
14Sample, wet massSamp wet mgFuchs, Matthiasbefore freeze-drying
15Sample, dry massSamp dmgFuchs, Matthiasafter freeze-drying
16Water loss per dry weightWater loss dry wgtgFuchs, Matthiaswet weight minus dry weight
17Water loss per dry weightWater loss dry wgt%Fuchs, Matthiasthe difference between the wet weight and the dry weight divided by the wet weight
18Ice content, gravimetricGrav ice cont%Fuchs, Matthiasthe ice content (water loss) in a sample divided by the dry weight of a sample. This is not calculated for active layer samples
19Ice content, volumetricVol ice cont%Fuchs, Matthiasthe volume of ice in a sample (water loss divided by the density of ice 0.9127) divided by the total volume of a sample. This is not calculated for active layer samples
20Size fraction > 2 mm, gravel>2 mm%Fuchs, Matthiaspercentage of fragments > 2mm (none of the samples included coarse fragments)
21Density, wet bulkWBDg/cm3Fuchs, Matthiaswet weight divided by the volume of a sampl
22Density, dry bulkDBDg/cm3Fuchs, Matthiasdry weight divided by the volume of a sample
23Carbon, organic, totalTOC%Fuchs, MatthiasCarbon and nitrogen and sulfur (CNS) element analyzer, Elementar, Vario MAXwt.%
24Nitrogen, totalTN%Fuchs, MatthiasCarbon and nitrogen and sulfur (CNS) element analyzer, Elementar, Vario ELwt.%
25Carbon, organic, total/Nitrogen, total ratioTOC/TNFuchs, Matthias
26CommentCommentFuchs, Matthias
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
6531 data points

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