Supplement to: Abegg, Friedrich; Hohnberg, Hans-Jürgen; Pape, Thomas; Bohrmann, Gerhard; Freitag, Johannes (2008): Development and application of pressure-core-sampling systems for the investigation of gas- and gas-hydrate-bearing sediments. Deep Sea Research Part I: Oceanographic Research Papers, 55(11), 1590-1599, https://doi.org/10.1016/j.dsr.2008.06.006