Blar i forfatter Artikler, rapporter og annet (geovitenskap) "Wallmann, K."

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    • In Situ Temperature Measurements at the Svalbard Continental Margin: Implications for Gas Hydrate Dynamics 

      Riedel, M.; Wallmann, K.; Berndt, C; Pape, T.; Freudenthal, T.; Bergenthal, M.; Bünz, Stefan; Bohrmann, G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-30)
      During expedition MARIA S. MERIAN MSM57/2 to the Svalbard margin offshore Prins Karls Forland, the seafloor drill rig MARUM‐MeBo70 was used to assess the landward termination of the gas hydrate system in water depths between 340 and 446 m. The study region shows abundant seafloor gas vents, clustered at a water depth of ∼400 m. The sedimentary environment within the upper 100 m below seafloor (mbsf) ...

    • Interactions between deep formation fluid and gas hydrate dynamics inferred from pore fluid geochemistry at active pockmarks of the Vestnesa Ridge, west Svalbard margin 

      Hong, Wei-Li; Pape, T; Schmidt, C.; Yao, Haoyi; Wallmann, K.; Plaza-Faverola, Andreia; Rae, J.W.B; Lepland, Aivo; Bünz, Stefan; Bohrmann, G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-11)
      Seafloor seepage sites along the Vestnesa Ridge off west-Svalbard have been, for decades, a natural laboratory for the studies of fluid flow and gas hydrate dynamics at passive continental margins. The lack of ground truth evidence for fluid composition and gas hydrate abundance deep in the sediment sequence however prohibits us from further assessing the current model of pockmark evolution from the ...