Organic Carbon Characteristics and Dynamics in Thermokarst Terrain on the Alaskan North Slope

Thermokarst processes have been accelerating since the 1950s in the Alaskan tundra (Chen et al., 2021; Jorgenson et al., 2006) which corresponds to warming permafrost temperatures (Biskaborn et al., 2019) and a disproportional warming climate of the Arctic region (Rantanen et al., 2022). On the Alas...

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Bibliographic Details
Main Authors: Seemann, Fabian, Jenrich, Maren, Grosse, Guido, Treat, Claire, Liebner, Susanne, Jones, Benjamin, Strauss, Jens
Format: Conference Object
Language:unknown
Published: 2024
Subjects:
north slope
permafrost
Thermokarst
Tundra
Alaska
Online Access:https://epic.awi.de/id/eprint/58870/
https://epic.awi.de/id/eprint/58870/1/Seemann%20et%20al%20Abstract.pdf
https://hdl.handle.net/10013/epic.b0f7ce65-1be8-4a17-bb81-b7679a0bfc05
Description
Summary:Thermokarst processes have been accelerating since the 1950s in the Alaskan tundra (Chen et al., 2021; Jorgenson et al., 2006) which corresponds to warming permafrost temperatures (Biskaborn et al., 2019) and a disproportional warming climate of the Arctic region (Rantanen et al., 2022). On the Alaskan North Slope, thermokarst is steering the dynamics of thermokarst lakes and drained lake basins (DLBs; Jones et al., 2022), thereby thawing, mobilizing, and sequestering organic carbon. The consequences for the biogeochemical system, which holds significant amounts of organic carbon (Palmtag et al., 2022), remain understudied. In particular, the quality of organic carbon is an important factor for the mobilization potential and rates of release as greenhouse gases (Jongejans et al., 2021). In our study, we aim to investigate the soil organic carbon pool characteristics in a thermokarst terrain close to Utqiaġvik, Alaska.

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