The discovery of a chain of mud volcanoes in the SW Barents Sea: unveiling the Polaris Mud Volcano Complex

Claudio Argentino¹, Rune Mattingsdal², Tor Eidvin³, Sverre Ekrene Ohm⁴, Giuliana Panieri^1,5

¹Department of Geosciences, UiT The Arctic University of Norway, NO-9037 Tromsø, Norway; ²Norwegian Offshore Directorate, NO-9406 Harstad, Norway; ³Retired from the Norwegian Offshore Directorate, NO-4003 Stavanger, Norway; ⁴Department of Energy Resources, University of Stavanger, 4021 Stavanger, Norway; ⁵Institute of Polar Sciences, National Research Council (CNR-ISP), 30172 Venice Mestre, Italy

The Jøtul hydrothermal field: High H2 production in sediment-hosted hydrothermal vent fluids at an ultraslow spreading mid-ocean ridge

Alexander Diehl^1,2, Eirini Anagnostou^2,3, Patrick Monien², Thomas Pape^1,2, Eva-Maria Meckel³, Miriam Römer^1,2, Leila Mezri^1,2, Wolfgang Bach^1,2, Donata Monien⁴, Christian Hansen², Aaron Röhler², Katharina Streuff^1,2, Sabina Strmic Palinkas^5,6, Yann Marcon^1,2, Ines Barrenechea Angeles⁶, Charlotte Kleint^1,2, Stig‑Morten Knutsen⁷, Gerhard Bohrmann^1,2

¹MARUM – Center for Marine Environmental Sciences, University of Bremen, Germany; ²Faculty of Geosciences, University of Bremen, Germany; ³Department of Physics and Earth Sciences, Constructor University Bremen, Germany; ⁴Leibniz-Centre for Tropical Marine Research (ZMT) GmbH, Bremen, Germany; ⁵Department of Geosciences, UiT The Arctic University of Norway, Tromsø, Norway; ⁶Department of Earth Science, University of Bergen, Norway; ⁷Norwegian Offshore Directorate, Harstad, Norway

Assessing the geochemical composition of the cold-water coral Enallopsammia rostrata as a proxy archive for the paleo-oceanographic evolution in the western Indian Ocean

Jorit F. Kniest¹, Jacek Raddatz¹, Jan Fietzke¹, Norbert Frank², Andrea Schröder-Ritzrau², Karthikeyan Arul², Mario Thöner¹, Tjorge Kaiser¹, André Freiwald³, Sascha Flögel¹

¹GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; ²Institute of Environmental Physics, University Heidelberg, Heidelberg, Germany; ³Marine Research Department, Senckenberg am Meer, Wilhelmshaven, Germany

Implications of declining rhodolith growth in a warming Arctic: a century-scale perspective

Sebastian Teichert¹, Carl J. Reddin², Max Wisshak³

¹Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany; ²MARUM – Center for Marine Environmental Sciences, Germany; ³Senckenberg am Meer Wilhelmshaven, Germany

Asphalt volcanism investigated in the deep southern Gulf of Mexico, Campeche-Sigsbee Salt Province

Gerhard Bohrmann, Miram Römer, Yann Marcon, Thomas Pape

Faculty of Geosciences and MARUM, University of Bremen, Germany