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  • 13C-POC; 14C-POC; Accelerator mass spectrometry, Ionplus, Mini Carbon Dating System (MiCaDaS AWI); AWI Arctic Land Expedition; CACOON; Carbon, organic, fraction; Carbon, organic, particulate; Changing Arctic Carbon cycle in the cOastal Ocean Near-shore; Continuous flow isotope ratio mass spectrometer, Sercon, 20-20; coupled with Automated nitrogen carbon analyzer; DATE/TIME; DEPTH, water; Event label; LATITUDE; LEN19-S-01; LEN19-S-02; LEN19-S-03; LEN19-S-04; LEN19-S-05; LEN19-S-06; LEN19-S-07; LEN19-S-08; LEN19-S-09; LEN19-S-78; LEN19-S-89; Lena 2019; Lena Delta; Lena Delta, Siberia; Lena River; LONGITUDE; MULT; Multiple investigations; POC; RU-Land_2019_Lena; Sardakhskaya; Suspended matter, total; TSM; Water sample; WL19-1; WL19-2; WL19-3; WL19-4; WL19-5; WL19-6; WL19-7; WL19-8; WL19-9; WS; Δ14C, particulate organic carbon; δ13C, particulate organic carbon  (1)
  • AWI_Perma; CACOON; Changing Arctic Carbon cycle in the cOastal Ocean Near-shore; Permafrost Research  (1)
  • PANGAEA  (2)
Document type
Keywords
Publisher
  • PANGAEA  (2)
Years
  • 1
    Publication Date: 2024-05-07
    Description: Total Suspended Matter (TSM), Particulate Organic Carbon (POC) and its isotopic composition were measured in water samples from the Lena River and its Delta (Sardakhskaya branch). Samples were taken in summer 2019 during the CACOON expedition (Fuchs et al., 2021a, b and 2022) along ~ 1600 km transect from Yakutsk downstream to the Lena Delta disembogue into the Laptev Sea. Water was filtered through pre-combusted (4.5 hours, 450 °C) and pre-weighed glass fiber filters (GF/F Whatman, 0.75 µm membrane, Ø 2.5 cm) for TSM content (difference in weights between dried filters with TSM and pre-weighed empty filters), POC concentration and δ13C-POC (Sercon 20-20 isotope ratio mass spectrometer coupled to an Automated Nitrogen Carbon Analyzer), ∆14C-POC analysis (accelerator mass spectrometer achieved on a Mini Carbon Dating System) and relative OC content in TSM (calculated by dividing the sample POC content by the TSM content). Our aim was to characterize POC along the Lena River over a transect from upper reaches of the Lena River north to the Lena delta in order to decipher the distribution, main sources, and transformation of POC on its way from the permafrost catchment to the Arctic Ocean.
    Keywords: 13C-POC; 14C-POC; Accelerator mass spectrometry, Ionplus, Mini Carbon Dating System (MiCaDaS AWI); AWI Arctic Land Expedition; CACOON; Carbon, organic, fraction; Carbon, organic, particulate; Changing Arctic Carbon cycle in the cOastal Ocean Near-shore; Continuous flow isotope ratio mass spectrometer, Sercon, 20-20; coupled with Automated nitrogen carbon analyzer; DATE/TIME; DEPTH, water; Event label; LATITUDE; LEN19-S-01; LEN19-S-02; LEN19-S-03; LEN19-S-04; LEN19-S-05; LEN19-S-06; LEN19-S-07; LEN19-S-08; LEN19-S-09; LEN19-S-78; LEN19-S-89; Lena 2019; Lena Delta; Lena Delta, Siberia; Lena River; LONGITUDE; MULT; Multiple investigations; POC; RU-Land_2019_Lena; Sardakhskaya; Suspended matter, total; TSM; Water sample; WL19-1; WL19-2; WL19-3; WL19-4; WL19-5; WL19-6; WL19-7; WL19-8; WL19-9; WS; Δ14C, particulate organic carbon; δ13C, particulate organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 155 data points
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2024-05-07
    Description: This data set includes spatial high-resolution bathymetry data sets for the Lena Delta and Kolyma Gulf regions. Based on large-scale current and historical nautical maps, depth points and isobaths lines were manually digitized and served as input data for the bathymetry models. The models were calculated with the topo to raster tool in ArcGIS TM version 10.6 into a 50 m (TTR50) and a 200 m (TTR200) grid cell bathymetry for both regions. The models were validated with depth data derived from ship cruises in 2019 (Fuchs et al., submitted, Palmtag et al., 2021, Palmtag and Mann, 2021) and water depth data available on PANGAEA (e.g. Hölemann et al., 2020). Beside the bathymetry models for the Lena Delta and Kolyma Gulf regions which are available in GeoTiff format, this data set contains the complete input data for the models, which includes the depth point data, the isobaths lines, and the water area extent in shapefile format for both regions.
    Keywords: AWI_Perma; CACOON; Changing Arctic Carbon cycle in the cOastal Ocean Near-shore; Permafrost Research
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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