Fig. 1
Major currents, bathymetry, and location of studied cores. a Map of Nordic Seas showing major currents and location of study area (black frame) and of studied core HH12-940PC (white dot). Core PS62/015 − 3 from the Denmark Strait (black dot)32 and the Nyegga pockmark area (black rectangle) are also indicated33. Coloring of map shows mean annual sea surface temperature for the 2005–2017 period84. The map was generated using Ocean Data View (https://odv.awi.de) with bathymetry from GEBCO (GEBCO Compilation Group (2023), GEBCO 2023 Grid (doi:https://doi.org/10.5285/f98b053b-0cbc-6c23-e053-6c86abc0af7b). b Bathymetric map of western Vestnesa Ridge generated from IBCAO85 showing positions of core HH12-940PC (water depth 1,294 m) and of published records discussed in the text. Core HH15-1252PC are from non-seep conditions north of the ridge7; core HH12-930GC, and multicore MUC 12 are from eastern Vestnesa Ridge47,52. White frame marks the western inactive pockmark field; black frame marks the eastern active pockmark field. NwAC, Norwegian Atlantic Current; IC, Irminger Current; WSC , West Spitsbergen Current; EGC, East Greenland Current; ESC , East Spitsbergen Current.
