n-Alkane Characteristics of Thawed Permafrost Deposits Below a Thermokarst Lake on Bykovsky Peninsula, Northeastern Siberia

• Published in: Frontiers in Environmental Science
• Main Authors: Loeka L. Jongejans, Kai Mangelsdorf, Lutz Schirrmeister, Mikhail N. Grigoriev, Georgii M. Maksimov, Boris K. Biskaborn, Guido Grosse, Jens Strauss
• Format: Article in Journal/Newspaper
• Language: English
• Published: Frontiers Media S.A. 2020
• Subjects: Russian Arctic; organic matter degradability; Yedoma deposits; thermokarst lake; talik; molecular biomarkers; geo; envir; Arctic; Talik; Ice; permafrost; Thermokarst; Siberia
• Online Access: https://doi.org/10.3389/fenvs.2020.00118; https://doaj.org/article/4f0b9ab030254608bf08474cd8950e7a

Rapid permafrost thaw by thermokarst mobilizes previously frozen organic matter (OM) down to tens of meters deep within decades to centuries, leading to microbial degradation and greenhouse gas release. Late Pleistocene ice-rich Yedoma deposits that thaw underneath thermokarst lakes and refreeze aft...