Now showing items 1-10 of 32
Role of tectonic stress in seepage evolution along the gas hydrate-charged Vestnesa Ridge, Fram Strait
(Journal article; Tidsskriftartikkel, 2015-02-03)
Submarine gas seepage in a mixed contractional and shear deformation regime: Cases from the Hikurangi oblique-subduction margin
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014-02-11)
Controls on gas hydrate system evolution in a region of active fluid flow in the SW Barents Sea
(Journal article; Tidsskriftartikkel, 2015-09)
The location and stability of gas hydrates in the SW Barents Sea is poorly constrained due to complex geological, geochemical, and geophysical conditions, including poor controls on regional heat flow and gas chemistry. Understanding the stability of gas hydrates in this region is important, as recent studies suggest destabilizing hydrates may lead to methane discharge into the ocean and possibly ...
Carbon isotope (d13C) excursions suggest times of major methane release during the last 14 ka in Fram Strait, the deep-water gateway to the Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
The history and future trends of ocean warming-induced gas hydrate dissociation in the SW Barents Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-13)
The Barents Sea is a major part of the Arctic where the Gulf Stream mixes with the cold Arctic waters. Late Cenozoic uplift and glacial erosion have resulted in hydrocarbon leakage from reservoirs, evolution of fluid flow systems, shallow gas accumulations, and hydrate formation throughout the Barents Sea. Here we integrate seismic data observations of gas hydrate accumulations along with gas hydrate ...
Bottom-simulating reflector dynamics at Arctic thermogenic gas provinces: An example from Vestnesa Ridge, offshore west Svalbard
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06)
OBS Data Analysis to Quantify Gas Hydrate and Free Gas in the South Shetland Margin (Antarctica)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-25)
The presence of a gas hydrate reservoir and free gas layer along the South Shetland margin (offshore Antarctic Peninsula) has been well documented in recent years. In order to better characterize gas hydrate reservoirs, with a particular focus on the quantification of gas hydrate and free gas and the petrophysical properties of the subsurface, we performed travel time inversion of ocean-bottom ...
High-resolution 3D seismic exhibits new insights into the middle-late Pleistocene stratigraphic evolution and sedimentary processes of the Bear Island trough mouth fan
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-21)
Arctic Ocean trough mouth fans (TMFs) represent a valuable archive of glacial-interglacial sedimentary processes that are especially important when reconstructing pre-Weichselian glaciations that may lack distinct imprints on the shelves. In 2011, we acquired the first high-resolution 3D seismic cube (~3 m vertical and 6 m horizontal resolution) on the continental slope of the SW Barents Sea by use ...
In Situ Temperature Measurements at the Svalbard Continental Margin: Implications for Gas Hydrate Dynamics
(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) ...
Norwegian margin outer shelf cracking: a consequence of climate-induced gas hydrate dissociation?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2010)