Geochemical evidence for seabed fluid flow linked to the subsea permafrost outer border in the South Kara Sea

• Published in: Geochemistry
• Main Authors: Semenov, Petr, Portnov, Aleksei D, Krylov, Alexey, Egorov, Alexander V, Vanshtein, Boris
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2019
• Subjects: VDP::Mathematics and natural science: 400::Geosciences: 450::Sedimentology: 456; VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456; Arctic; Arctic Ocean; Kara Sea; Yamal Peninsula; Arctic Ocean Acidification; Ocean acidification; permafrost
• Online Access: https://hdl.handle.net/10037/18472; https://doi.org/10.1016/j.chemer.2019.04.005

Driven by rising bottom water temperatures, the thawing of subsea permafrost leads to an increase in fluid flow intensity in shallow marine sediments and results in the emission of methane into the water column. Limiting the release of permafrost-related gas hydrates and permafrost- sequestered meth...