10.18453/rosdok_id00003412 Beilfuhs, Stine Stine Beilfuhs http://d-nb.info/gnd/1247759725 Universität Rostock 2021 500 Natural sciences 540 Chemistry & allied sciences 2021 en http://purl.uni-rostock.de/rosdok/id00003412 urn:nbn:de:gbv:28-rosdok_id00003412-3 The Okinawa Trough is a natural hydrothermal gas emission field. The flux of CO2 into the water column is dominated by hot hydrothermal CO2-rich vents. The influence of the emitted low-temperatured gas bubbles and droplets (‘condensed phase’) is very likely restricted to the lowermost part of the water column. Despite their proximity the gas composition of the condensed phases varies widely, especially in methane, which is likely caused by diverse phase transformation and thus fractionation below and above the seafloor.