Stieg, Amelie; Biskaborn, Boris K; Herzschuh, Ulrike; Marent, Andreas; Weiner, Mikaela; Wilhelms-Dick, Dorothee; Meyer, Hanno (2025): Diatom silicon isotope record of the sediment short core EN18232-1, Lake Khamra, Siberia [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971278
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Published: 2025-02-27 • DOI registered: 2025-02-27
Abstract:
This data set is an extension to the previously published data in a bundled publication (Stieg et al., 2024a) from the Russian Lake Khamra (59.99°N, 112.98°E, 340 m a.s.l.), located in eastern Siberia in SW Yakutia. The short core (EN18232-1) was retrieved in summer 2018 and subsampled in 2021 in 39 continuous 1 cm increments covering the last 220 years (ca. 2015-1790 CE). Detailed information about the age-depth model of the short core EN18232-1 can be found in the research paper (Stieg et al., 2024b). We provide diatom silicon isotope values of all 39 samples of the short core EN18232-1, determined from the same aliquots as the diatom oxygen isotope measurements published in an earlier data set (Stieg et al., 2024c). Details of the methods used can be found in Stieg et al. (in process). In general, the laser fluorination method was applied using bromine pentafluoride (BrF5) as a reagent. In several steps the silicon is separated and trapped as silicon tetrafluoride (SiF4) for the subsequent silicon isotope analysis (Chapligin et al., 2010; Maier et al., 2013). The samples were measured on a MAT 252 IRMS at AWI Bremerhaven against a reference gas with known isotopic composition, calibrated to the reference quartz standard NBS-28. The results are expressed as delta notation δ30Si (30Si / 28Si) in per mill (‰). Analytical precision was better than 0.07 ‰ (1σ of δ30Si). The dataset includes a weighted mean value for each sample, the standard deviation, and the number of replicates.
Keyword(s):
Supplement to:
Stieg, Amelie; Biskaborn, Boris K; Herzschuh, Ulrike; Marent, Andreas; Strauss, Jens; Wilhelms-Dick, Dorothee; Pestryakova, Luidmila A; Meyer, Hanno (preprint): Diatom shifts and limnological changes in a Siberian boreal lake: impacts of climate warming and anthropogenic pollution. https://doi.org/10.5194/egusphere-2024-2470
Related to:
Stieg, Amelie; Biskaborn, Boris K; Herzschuh, Ulrike; Strauss, Jens; Pestryakova, Luidmila A; Meyer, Hanno (2024): Hydroclimatic anomalies detected by a sub-decadal diatom oxygen isotope record of the last 220 years from Lake Khamra, Siberia. Climate of the Past, 20(4), 909-933, https://doi.org/10.5194/cp-20-909-2024 (Stieg et al., 2024b)
Stieg, Amelie; Biskaborn, Boris K; Herzschuh, Ulrike; Strauss, Jens; Pestryakova, Luidmila A; Meyer, Hanno (2024): Sub-decadal diatom oxygen isotope record and biogeochemical data of the last 220 years (2015-1790CE) based on a sediment short core from Lake Khamra, Yakutia, Siberia [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.962988 (Stieg et al., 2024a)
Stieg, Amelie; Biskaborn, Boris K; Herzschuh, Ulrike; Weiner, Mikaela; Marent, Andreas; Meyer, Hanno (2024): Sub-decadal diatom oxygen isotope record of the last 220 years (2015-1790CE) of sediment short core EN18232-1 from Lake Khamra, SW Yakutia, Siberia, Russia [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.962929 (Stieg et al., 2024c)
References:
Chapligin, Bernhard; Meyer, Hanno; Friedrichsen, H; Marent, A; Sohns, E; Hubberten, Hans-Wolfgang (2010): A high‐performance, safer and semi‐automated approach for the δ 18 O analysis of diatom silica and new methods for removing exchangeable oxygen. Rapid Communications in Mass Spectrometry, 24(17), 2655-2664, https://doi.org/10.1002/rcm.4689
Maier, Edith; Chapligin, Bernhard; Abelmann, Andrea; Gersonde, Rainer; Esper, Oliver; Ren, Jian; Friedrichsen, Hans; Meyer, Hanno; Tiedemann, Ralf (2013): Combined oxygen and silicon isotope analysis of diatom silica from a deglacial subarctic Pacific record. Journal of Quaternary Science, 28(6), 571-581, https://doi.org/10.1002/jqs.2649
Project(s):
Coverage:
Latitude: 59.990910 * Longitude: 112.983730
Date/Time Start: 2018-08-14T00:00:00 * Date/Time End: 2018-08-14T00:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.385 m
Event(s):
EN18232-1 (Lake Khamra) * Latitude: 59.990910 * Longitude: 112.983730 * Date/Time: 2018-08-14T00:00:00 * Elevation: 340.0 m * Location: Lake Khamra, SW Yakutia, Russia * Campaign: RU-Land_2018_Yakutia (Chukotka 2018) * Basis: AWI Arctic Land Expedition * Method/Device: Gravity corer, UWITEC (GCUWI) * Comment: core length: 0.42 m; the short core was subsampled gapless in 1 cm increments, in total 39 subsamples
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Stieg, Amelie | |||
| 2 | Sample ID | Sample ID | Stieg, Amelie | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Stieg, Amelie | Geocode | |
| 4 | Depth, top/min | Depth top | m | Stieg, Amelie | ||
| 5 | Depth, bottom/max | Depth bot | m | Stieg, Amelie | ||
| 6 | AGE | Age | ka BP | Stieg, Amelie | Geocode | |
| 7 | Age | Age | a AD/CE | Stieg, Amelie | ||
| 8 | Diatoms, δ30Si | Diatoms δ30Si | ‰ NBS | Stieg, Amelie | Mass spectrometer, ThermoFisher Scientific MAT 252 | corrected, mean weighted |
| 9 | Diatoms, δ30Si, standard deviation | Diatoms δ30Si std dev | ± | Stieg, Amelie | Mass spectrometer, ThermoFisher Scientific MAT 252 | 1σ |
| 10 | Replicates | Repl | # | Stieg, Amelie |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
273 data points