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, In: 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
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Abstract:
The dataset includes diatom oxygen isotope data for 39 samples from short core EN18232-1, Lake Khamra, and corresponding key geochemical characteristics of the purified lake sediment samples based on Energy-Dispersive X-ray Spectroscopy (EDS) measurements. For each sample (Sample ID) the corresponding core depth (Depth sed top/bottom) and the calculated mean age (Age) are given. EDS measurements were carried out by a JEOL M-IT500HR analytical scanning electron microscope (SEM) with an integrated EDS-system supplied with a Peltier element cooled SD detector (SDD) at AWI Potsdam. The standardless procedure was used according to Chapligin et al. (2012), including 6 repetitions, acceleration voltage of 20.0 kV, magnification of 300 and a measuring time of 30 seconds. All detectable elements are normalized to 100% weight. Elements are given as oxides with weight percentages (in %) and summed up to the total sum (total %) of each sample. The diatom oxygen isotope data was generated in the ISOLAB Facility at AWI Potsdam with a semi-automated laserfluorination line (Chapligin et al., 2010) in combination with a SERCON HS2022 mass spectrometer (https://hdl.handle.net/10013/sensor.4880f572-3c55-4e3e-a2e7-485d9bfa06b2). All δ18Odiatom values are given in per mill (‰) vs. Vienna Standard Mean Ocean Water (VSMOW). The dataset includes the mean of measured δ18Odiatom values (Diatom δ18O mean), the standard deviation (Diatom δ18O std dev) and number of replicates (Repl), as well as the calculated contamination (Contamination in %) and the δ18Odiatom corrected for contamination (Diatom δ18O corrected). Details of the contamination correction and isotope analytics are given in Stieg et al. (2024).
Keyword(s):
Supplement 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
References:
Blaauw, Maarten; Christen, Andrés (2011): Flexible paleoclimate age-depth models using an autoregressive gamma process. Bayesian Analysis, 6(3), 457-474, https://doi.org/10.1214/11-BA618
Chapligin, Bernhard; Meyer, Hanno; Bryan, A; Snyder, Jeffrey A; Kemnitz, Helga (2012): Assessment of purification and contamination correction methods for analysing the oxygen isotope composition from biogenic silica. Chemical Geology, 300-301, 185-199, https://doi.org/10.1016/j.chemgeo.2012.01.004
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
Additional metadata:
SENSOR (2023): Metadata for mass spectrometer Sercon 20-22 mass spectrometer at Current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, hdl:10013/sensor.4880f572-3c55-4e3e-a2e7-485d9bfa06b2
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):
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
Comment:
To compute the age-depth model a Bayesian accumulation model within the R package 'rbacon' v2.5.8 (Blaauw and Christen (2011); R version 4.1.1) was used based on the 210Pb chronology.
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 – mean | |
| 4 | Depth, sediment/rock, top/minimum | Depth sed top | m | Stieg, Amelie | ||
| 5 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Stieg, Amelie | ||
| 6 | AGE | Age | ka BP | Stieg, Amelie | Age, calculated from a AD | Geocode |
| 7 | Age | Age | a AD/CE | Stieg, Amelie | Calculated according to Blaauw and Christen (2011) | |
| 8 | Silicon dioxide | SiO2 | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 9 | Aluminium oxide | Al2O3 | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 10 | Sodium oxide | Na2O | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 11 | Magnesium oxide | MgO | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 12 | Potassium oxide | K2O | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 13 | Calcium oxide | CaO | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 14 | Iron oxide, FeO | FeO | % | Stieg, Amelie | Scanning electron microscope (SEM), JEOL, M-IT500HR | |
| 15 | Total | Total | % | Stieg, Amelie | Calculated | |
| 16 | Diatoms, δ18O | Diatoms δ18O | ‰ SMOW | Stieg, Amelie | Isotope-ratio mass spectrometry (IRMS), Sercon, HS2022 | mean |
| 17 | Diatoms, δ18O, standard deviation | Diatoms δ18O std dev | ± | Stieg, Amelie | Isotope-ratio mass spectrometry (IRMS), Sercon, HS2022 | |
| 18 | Replicates | Repl | # | Stieg, Amelie | ||
| 19 | Contamination | Contamination | % | Stieg, Amelie | Calculated according to Stieg et al. (2024) | |
| 20 | Diatoms, δ18O, corrected | Diatoms δ18O corr | ‰ SMOW | Stieg, Amelie | Calculated according to Stieg et al. (2024) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
663 data points