Methane-flow system within the Nyegga pockmark field, offshore mid-Norway
Stéphanie Dupré,
Jean-Paul Foucher,
Catherine Pierre
et al.
Abstract:We investigated fluid seepage within the Nyegga pockmark field (600–900 m water depths) off mid-Norway from Remotely Operated Vehicle dives at the so-called CNE sites (CNE01 to CNE17). The seafloor morphology of some of these features corresponds to pockmarks and adjacent ridges, with the latter being the focus of present seepage activity. These structures are underlain by chimneys above a gas-charged zone with, in some cases, a substantial body of hydrate-invaded sediment (down to 1.3 s in two-way travel time… Show more
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