Giest, Frieda; Jenrich, Maren; Grosse, Guido; Jones, Benjamin; Mangelsdorf, Kai; Windirsch, Torben; Strauss, Jens (2024): Biogeochemical characteristics of sediment cores from a land – shore transect in the Teshekpuk Lake Region in Arctic Alaska, 2022 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971246
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Published: 2024-09-20 • DOI registered: 2024-10-19
Abstract:
This dataset describes six sediment cores (12 - 219 cm length) from different landscape features in a coastal permafrost thermokarst affected landscape in the Theshekpuk Lake region in Arctic Alaska. They are located in a transect from inland to coast, to describes the transitional dynamics between terrestrial and marine permafrost and thermokarst. The cores were drilled during the Perma-X Lagoon expedition in April 2022. The three unfrozen cores from a marine (MAR, 12 cm length), an intact lagoon (LAG, 31 cm length) and a thermokarst lake (TKL, 50 cm length) site, were all sampled using a Push Corer. The three frozen cores, including upland permafrost (UPL, 203 cm length), drained thermokarst lake basin (DLB, 219 cm length) and semi-drained lagoon (SDLAG, 183 cm length) deposits, were drilled using a SIPRE Corer. The biogeochemical analysis included subsamples taken in intervals of 5–10 cm along the cores. Parameters included total carbon (TC) [wt%], total organic carbon (TOC) [wt%], total nitrogen (TN) [wt%], TOC/TN ratio, δ¹³C [‰ vs. VPDB] , δ¹⁵N [‰ vs. air raw], TOC density (TOCvol) [kg/m³], and mercury (Hg) [µg/kg].
Keyword(s):
Related to:
Giest, Frieda; et al. (submitted): Organic Carbon, Mercury, and Sediment Characteristics along a land – shore transect in Arctic Alaska.
Project(s):
Permafrost Research (AWI_Perma)
Coverage:
Median Latitude: 70.868315 * Median Longitude: -153.645381 * South-bound Latitude: 70.836194 * West-bound Longitude: -153.708283 * North-bound Latitude: 70.885586 * East-bound Longitude: -153.508800
Date/Time Start: 2022-04-25T00:00:00 * Date/Time End: 2022-04-27T00:00:00
Minimum DEPTH, sediment/rock: 0.0150 m * Maximum DEPTH, sediment/rock: 2.1500 m
Event(s):
AK-Land_2022_NorthSlope_TES22-DLB1-01 (DLB) * Latitude: 70.854375 * Longitude: -153.663944 * Date/Time: 2022-04-25T00:00:00 * Recovery: 219 cm * Campaign: AK-Land_2022_NorthSlope (Perma-X Lagoons Alaska 2022) * Basis: AWI Arctic Land Expedition * Method/Device: SIPRE corer (SIPREC) * Comment: landscape: drained thermokarst lake basin; initial condition: frozen; number of subsamples: 13
AK-Land_2022_NorthSlope_TES22-LAG1-01 (SDLAG) * Latitude: 70.870994 * Longitude: -153.664761 * Date/Time: 2022-04-25T00:00:00 * Recovery: 183 cm * Campaign: AK-Land_2022_NorthSlope (Perma-X Lagoons Alaska 2022) * Basis: AWI Arctic Land Expedition * Method/Device: SIPRE corer (SIPREC) * Comment: landscape: semi-drained lagoon; initial condition: frozen; number of subsamples: 15
AK-Land_2022_NorthSlope_TES22-LAG2-01 (LAG) * Latitude: 70.877600 * Longitude: -153.508800 * Date/Time: 2022-04-27T00:00:00 * Recovery: 31 cm * Campaign: AK-Land_2022_NorthSlope (Perma-X Lagoons Alaska 2022) * Basis: AWI Arctic Land Expedition * Method/Device: Push corer (PUC) * Comment: landscape: intact lagoon; initial condition: unfrozen; number of subsamples: 2
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Giest, Frieda | |||
| 2 | Latitude of event | Latitude | Giest, Frieda | |||
| 3 | Longitude of event | Longitude | Giest, Frieda | |||
| 4 | Sample ID | Sample ID | Giest, Frieda | |||
| 5 | Depth, top/min | Depth top | m | Giest, Frieda | ||
| 6 | Depth, bottom/max | Depth bot | m | Giest, Frieda | ||
| 7 | DEPTH, sediment/rock | Depth sed | m | Giest, Frieda | Geocode – mean | |
| 8 | Carbon, total | TC | % | Giest, Frieda | wt% | |
| 9 | Carbon, organic, total | TOC | % | Giest, Frieda | wt% | |
| 10 | Nitrogen, total | TN | % | Giest, Frieda | wt% | |
| 11 | Carbon, organic, total/Nitrogen, total ratio | TOC/TN | Giest, Frieda | |||
| 12 | δ13C, organic carbon | δ13C Corg | ‰ PDB | Giest, Frieda | vs. VPDB | |
| 13 | δ15N, organic matter | δ15N OM | ‰ air | Giest, Frieda | raw | |
| 14 | Carbon, organic, total | TOC | kg/m3 | Giest, Frieda | ||
| 15 | Mercury | Hg | µg/kg | Giest, Frieda |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
511 data points