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Orals BG7.1

BG7.1

Methane in the marine and terrestrial realm: geo(physical) aspects, biogeochemical cycling, microbial metabolisms, environmental impacts and climate change
Convener: Helge Niemann 
Co-Conveners: Tomas Feseker , Alina Stadnitskaia 
Session details
Orals
 / Thu, 16 Apr, 08:30–12:15  / Room G5
Posters
 / Attendance Thu, 16 Apr, 15:30–17:00
 / Attendance Thu, 16 Apr, 15:30–17:00  /
Add this session to your personal programme

Thursday, 16 Apr 2015
Room G5
Chairperson: Helge Niemann, Tomas Feseker, Alina Stadnitskaia
subsurface

08:30–08:45
EGU2015-81
Characterization of methane hydrates and free gas deposits at Nyegga CNE03 pockmark, using marine CSEM and seismic joint-interpretation
Eric Attias, Karen Weitemeyer, Martin Sinha, Tim Minshull, Marion Jegen-Kulcsar, and Christian Berndt
08:45–09:00
EGU2015-9387
Gas-controlled seafloor doming on Opouawe Bank, offshore New Zealand
Stephanie Koch, Christian Berndt, Joerg Bialas, Matthias Haeckel, Gareth Crutchley, Cord Papenberg, Dirk Klaeschen, and Jens Greinert
sediments

09:00–09:15
EGU2015-2397
Modeling methane bubble growth in fine-grained muddy aquatic sediments: correlation with sediment properties
Regina Katsman
09:15–09:30
EGU2015-8998
Geochemical signature of methane-related archaea associated with gas hydrate occurrences on the Sakhalin slope
Lee DongHun, Jin youngkeun, Gal JongKu, Minami Hirotsugu, Hachikubo Akihiro, and Shin KyungHoon
water column

09:30–09:45
EGU2015-5097
The Bubble Transport Mechanism: Indications for a bubble-mediated transfer of microorganisms from the sediment into the water column
Oliver Schmale, Christian Stolle, Jens Schneider von Deimling, Ira Leifer, Katrin Kießlich, Stefan Krause, Andreas Frahm, and Tina Treude
09:45–10:00
EGU2015-4717
Seasonal methane accumulation and release from a gas emission site in the central North Sea
Susan Mau, Torben Gentz, Jan-Hendrik Körber, Marta Torres, Miriam Römer, Heiko Sahling, Paul Wintersteller, Roi Martinez, Michael Schlüter, and Elisabeth Helmke
10:00–10:15
EGU2015-10550
Fluxes of dissolved methane from the seafloor at the landward limit of the gas hydrate stability zone offshore western Svalbard
Carolyn Graves, Lea Steinle, Helge Niemann, Gregor Rehder, Rebecca Fisher, Dave Lowry, Doug Connelly, and Rachael James
Coffee Break
Chairperson: Helge Niemann, Tomas Feseker, Alina Stadnitskaia
10:30–10:45
EGU2015-9514
Methane from shallow seep areas of the NW Svalbard Arctic margin does not reach the sea surface
Anna Silyakova, Jens Greinert, Pär Jansson, and Bénédicte Ferré
lacustrine / terrestrial

10:45–11:00
EGU2015-15851
River methane hot-spots: Continuous methane ebullition measurements over an annual cycle linked to river sediment production
Jeremy Wilkinson, Andreas Maeck, Zeyad Ashboul, and Andreas Lorke
11:00–11:15
EGU2015-1330
Dynamics of atmospheric-methane oxidation in glacier-forefield soils
Eleonora Chiri, Philipp A. Nauer, Edda-Marie Rainer, Ruth Henneberger, Josef Zeyer, and Martin H. Schroth
11:15–11:30
EGU2015-536
Microbial life in volcanic/geothermal areas: how soil geochemistry shapes microbial communities
Antonina Lisa Gagliano, Walter D'Alessandro, Andrea Franzetti, Francesco Parello, Marcello Tagliavia, and Paola Quatrini
ice / efflux to atmosphere

11:30–11:45
EGU2015-7036
Using stable isotopes to unravel the role of sea-ice in the methane cycle
Célia Julia Sapart, Jiayun Zhou, Gauthier Carnat, Bruno Delille, Helge Niemann, Thomas Röckmann, Carina van der Veen, and Jean-Louis Tison
11:45–12:00
EGU2015-12765
Understanding of the atmospheric methane evolution and change over the last 30 years with focus on the Arctic region
Stephen Platt, Cathrine Lund Myhre, Stig Dalsoren, Ove Hermansen, and Gunnar Myhre
paleo

12:00–12:15
EGU2015-1493
Methanogenesis produces strong 13C-enrichment in stromatolites of Lagoa Salgada, Brazil: A modern analogue for Palaeo-/Neoproterozoic stromatolites?
Patrick Meister, Daniel Birgel, Rebecca Lundberg, Thomas Horat, Tomaso Bontognali, Anelize Bahniuk Rumbelsperger, Carlos Rezende, Crisógono Vásconcelos, and Judith A. McKenzie