Seemann, Fabian; Frauhammer, Carolin; Ebel, Lars; Lindemann, Justin; Mollenhauer, Gesine; Eulenburg, Antje; Weiner, Mikaela; Meyer, Hanno; Strauss, Jens (2025): Biogeochemical and hydrochemical investigations on sediment cores from thermokarst terrain on the Baldwin Peninsula, northwestern Alaska [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.984854
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2025-09-12 • DOI registered: 2025-10-11
Abstract:
In March 2024, sediment cores were collected along two land-ocean transects along the coast of the Baldwin Peninsula (Alaska). Undisturbed permafrost upland, thermokarst lake, drained lake basin and nearshore marine positions were considered. While Transect 0 (T0) is characterized by a recently drained lake (drainage event in 2022), Transect 1 (T1) is characterized by a semi-drained lake basin. The chosen transects represent typical landscape dynamics of the region which have implications on organic matter alteration. In particular, both mentioned landforms were found to maintain taliks. Biogeochmical and hydrochemical investigations on sediments and pore water/ice provide insights into ground conditions and organic carbon degradation. With the exception of radiocarbon dates (MICADAS laboratory, AWI Bremerhaven) and isotope data (ISOLAB Facility, AWI Potsdam), laboratory analyses were conducted at the Permafrost Research Section (AWI Potsdam).
Related to:
Blott, Simon J; Pye, Kenneth (2001): GRADISTAT: a grain size distribution and statistics package for the analysis of unconsolidated sediments. Earth Surface Processes and Landforms, 26(11), 1237-1248, https://doi.org/10.1002/esp.261
Seemann, Fabian; Frauhammer, Carolin; Ebel, Lars; Lindemann, Justin; Weiner, Mikaela; Wolter, Juliane; Strauss, Jens (2025): Sedimentary n‑alkane biomarkers with carbon, nitrogen and δ¹³C profiling from the Baldwin Peninsula (Arctic Alaska) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.984991
Stuiver, Minze; Reimer, Paula J (1993): Extended 14C data base and revised CALIB 3.0 14C age calibration program. Radiocarbon, 35(1), 215-230, https://doi.org/10.1017/S0033822200013904
References:
Reimer, Paula J; Austin, William EN; Bard, Edouard; Bayliss, Alex; Blackwell, Paul G; Ramsey, Christopher Bronk; Butzin, Martin; Cheng, Hai; Edwards, R Lawrence; Friedrich, Michael; Grootes, Pieter Meiert; Guilderson, Thomas P; Hajdas, Irka; Heaton, Timothy J; Hogg, Alan G; Hughen, Konrad A; Kromer, Bernd; Manning, Sturt W; Muscheler, Raimund; Palmer, Jonathan G; Pearson, Charlotte; van der Plicht, Johannes; Reimer, Ron W; Richards, David A; Scott, E Marian; Southon, John R; Turney, Chris S M; Wacker, Lukas; Adolphi, Florian; Büntgen, Ulf; Capano, Manuela; Fahrni, Simon M; Fogtmann-Schulz, Alexandra; Friedrich, Ronny; Köhler, Peter; Kudsk, Sabrina; Miyake, Fusa; Olsen, Jesper; Reinig, Frederick; Sakamoto, Minoru; Sookdeo, Adam; Talamo, Sahra (2020): The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP). Radiocarbon, 62(4), 725-757, https://doi.org/10.1017/RDC.2020.41
Standard operating procedure:
Mollenhauer, Gesine; Grotheer, Hendrik; Gentz, Torben; Bonk, Elizabeth; Hefter, Jens (2021): Standard operation procedures and performance of the MICADAS radiocarbon laboratory at Alfred Wegener Institute (AWI), Germany. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 496, 45-51, https://doi.org/10.1016/j.nimb.2021.03.016
Additional metadata:
SENSOR: Metadata for mass spectrometer Finnigan Delta-S mass spectrometer (DIFE) at current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, hdl:10013/sensor.af148dea-fe65-4c87-9744-50dc4c81f7c9
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
Further details:
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
Project(s):
Permafrost Research (AWI_Perma)
Coverage:
Median Latitude: 66.837259 * Median Longitude: -162.514402 * South-bound Latitude: 66.785585 * West-bound Longitude: -162.527225 * North-bound Latitude: 66.907028 * East-bound Longitude: -162.490954
Date/Time Start: 2024-03-12T00:00:00 * Date/Time End: 2024-03-21T00:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 3.090 m
Event(s):
AK-Land_2024_NWAlaska_spring_BAL24_T0_DLB_001 * Latitude: 66.905016 * Longitude: -162.511771 * Date/Time: 2024-03-12T00:00:00 * Recovery: 2.14 m * Campaign: AK-Land_2024_NWAlaska_spring * Basis: AWI Arctic Land Expedition * Method/Device: SIPRE corer (SIPREC) * Comment: SIPRE corer (7.5 cm diameter)
AK-Land_2024_NWAlaska_spring_BAL24_T0_L_001 * Latitude: 66.903148 * Longitude: -162.506359 * Date/Time: 2024-03-13T00:00:00 * Recovery: 0.67 m * Campaign: AK-Land_2024_NWAlaska_spring * Basis: AWI Arctic Land Expedition * Method/Device: Push corer (PUC) * Comment: Push corer (7 cm diameter)
AK-Land_2024_NWAlaska_spring_BAL24_T0_L_002 * Latitude: 66.903148 * Longitude: -162.506359 * Date/Time: 2024-03-13T00:00:00 * Recovery: 3.11 m * Campaign: AK-Land_2024_NWAlaska_spring * Basis: AWI Arctic Land Expedition * Method/Device: Vibra-corer * Comment: Vibra corer (7.5 cm diameter; 1.44 m compressed)
Comment:
F.S. received funding from the German Federal Environmental Foundation (Deutsche Bundesstiftung Umwelt).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Seemann, Fabian | |||
| 2 | Core | Core | Seemann, Fabian | |||
| 3 | Transect | Transect | Seemann, Fabian | |||
| 4 | Position | Position | Seemann, Fabian | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Seemann, Fabian | Geocode – mean sample depth | |
| 6 | Depth, sediment/rock, top/minimum | Depth sed top | m | Seemann, Fabian | layer top | |
| 7 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Seemann, Fabian | layer bottom | |
| 8 | Carbon, total | TC | % | Seemann, Fabian | Carbon Analyzer, Elementar, soli TOC cube | |
| 9 | Carbon, organic, total | TOC | % | Seemann, Fabian | Carbon Analyzer, Elementar, soli TOC cube | |
| 10 | Nitrogen, total | TN | % | Seemann, Fabian | Nitrogen Analyzer, Elementar, rapid MAX N exceed | |
| 11 | Carbon/Nitrogen ratio | C/N | Seemann, Fabian | |||
| 12 | Mercury, total | Hg tot | ng/g | Seemann, Fabian | Mercury analyser, MLS-MWS, DMA-80 evo III | Total mercury; machine detection limit of 0.003 ng and laboratory proven limit of determination of 0.4 ng. |
| 13 | δ13C, organic carbon | δ13C Corg | ‰ PDB | Seemann, Fabian | Mass spectrometer, ThermoFischer, Delta-V | ISOLAB AWI Potsdam (Sensor (2022) |
| 14 | Age, dated | Age dated | ka BP | Seemann, Fabian | Age, 14C AMS, Mini Carbon Dating System (MICADAS) | >50 infinite ages. Calibrated with CALIB 7.1 IntCal13 calibration curve after Reimer et al. 2013. |
| 15 | Age, dated, range, minimum | Age dated min | ka | Seemann, Fabian | Age, 14C AMS, Mini Carbon Dating System (MICADAS) | > 50 infinite ages. Calibrated with CALIB 7.1 IntCal13 calibration curve after Reimer et al 2013. |
| 16 | Age, dated, range, maximum | Age dated max | ka | Seemann, Fabian | Age, 14C AMS, Mini Carbon Dating System (MICADAS) | > 50 infinite ages. Calibrated with CALIB 7.1 IntCal13 calibration curve after Reimer et al 2013. |
| 17 | Grain size, mean | Grain size mean | µm | Seemann, Fabian | ||
| 18 | Size fraction < 0.002 mm, clay | <2 µm | % | Seemann, Fabian | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 19 | Size fraction 0.063-0.002 mm, silt, mud | 63-2 µm | % | Seemann, Fabian | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 20 | Size fraction 2.000-0.063 mm, sand | 2000-63 µm | % | Seemann, Fabian | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 21 | Size fraction > 1 mm, gravel | >1 mm | % | Seemann, Fabian | Grain size, Mastersizer 3000, Malvern Instrument Inc. | |
| 22 | Magnetic susceptibility, mass | Suscept/mass | 10-6 m3/kg | Seemann, Fabian | Magnetic susceptibility meter, Bartington MS2B bulk sensor 4600 Hz | 4.65 kHz |
| 23 | Magnetic susceptibility, mass | Suscept/mass | 10-6 m3/kg | Seemann, Fabian | Magnetic susceptibility meter, Bartington MS2B bulk sensor 460 Hz | 0.465 kHz |
| 24 | Wet mass | Wet m | g | Seemann, Fabian | ||
| 25 | Dry mass | Dry m | g | Seemann, Fabian | ||
| 26 | Soil water content | SWC | % | Seemann, Fabian | absolute SWC | |
| 27 | Density, wet bulk | WBD | g/cm3 | Seemann, Fabian | ||
| 28 | Density, dry bulk | DBD | g/cm3 | Seemann, Fabian | ||
| 29 | Carbon, organic, dissolved | DOC | mg/l | Seemann, Fabian | High catalytic combustion, Shimadzu, Shimadzu TOC-VCPH | |
| 30 | pH | pH | Seemann, Fabian | WTW MultiLab 540 | ||
| 31 | Conductivity, electrical | EC | µS/cm | Seemann, Fabian | Handheld meter, WTW, Cond 340i | |
| 32 | δ Deuterium, water | δD H2O | ‰ SMOW | Seemann, Fabian | Mass spectrometer, Finnigan, Delta-S | ISOLAB AWI Potsdam (Sensor (2022)) |
| 33 | δ18O, water | δ18O H2O | ‰ SMOW | Seemann, Fabian | Mass spectrometer, Finnigan, Delta-S | ISOLAB AWI Potsdam (Sensor (2022)) |
| 34 | Comment | Comment | Seemann, Fabian |
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:
8471 data points
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