Sedimentological, biogeochemical and hydrochemical characteristics of deep drilled thermokarst lagoon sediment cores, Bykovsky Peninsula, Lena Delta area

Current warming, sea-level rise, coastal erosion and accelerated permafrost thaw is leading to increasing thermokarst lagoon formation along wide parts of the arctic coast. Entering seawater affects the temperature and salinity of former thermokarst lake taliks during their transition to the marine...

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Bibliographic Details
Main Authors: Jenrich, Maren, Angelopoulos, Michael, Grosse, Guido, Overduin, Pier Paul, Schirrmeister, Lutz, Nitze, Ingmar, Biskaborn, Boris K, Liebner, Susanne, Grigoriev, Mikhail N, Strauss, Jens
Format: Dataset
Language:English
Published: PANGAEA 2020
Subjects:
AWI_Envi
AWI_PerDyn
AWI_Perma
Bykovsky
carbon content
Cryosphere
permafrost
Permafrost Research
Permafrost Research (Periglacial Dynamics) @ AWI
Polar Terrestrial Environmental Systems @ AWI
pore water
sediment analysis
Thermokarst Lagoon
Arctic
Ice
lena delta
Magnetic susceptibility
polar fox
Thermokarst
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.922170
https://doi.org/10.1594/PANGAEA.922170
Description
Summary:Current warming, sea-level rise, coastal erosion and accelerated permafrost thaw is leading to increasing thermokarst lagoon formation along wide parts of the arctic coast. Entering seawater affects the temperature and salinity of former thermokarst lake taliks during their transition to the marine environment. Therefore, thermokarst lagoon formation is an important step in the process of mobilizing terrestrial permafrost carbon pools along rapidly changing Arctic coasts. This dataset presents results of sediment analyses (ice/water content, grain-size, bulk density, magnetic susceptibility), biogeochemical analyses (TC, TOC, TN, TOC/TN, d13C, d15N), pore water analyses (pH, electrical conductivity, DOC, stable water isotopes), freezing point calculations and radiocarbon dating of two sediment cores (> 30m long). The cores were taken at Uomullyakh Lagoon (PG2410) and Polar Fox Lagoon (PG2411) located at the Bykovsky Peninsula in April 2017.

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