A5089905717- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Geological formations and processes
- Geological Studies and Exploration
- Cryospheric studies and observations
- Hydrocarbon exploration and reservoir analysis
- Landslides and related hazards
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- Geological Modeling and Analysis
- Planetary Science and Exploration
- Space Exploration and Technology
- Climate change and permafrost
- CO2 Sequestration and Geologic Interactions
- Seismic Waves and Analysis
- Maritime and Coastal Archaeology
- Coastal and Marine Dynamics
- Grouting, Rheology, and Soil Mechanics
- Tunneling and Rock Mechanics
- Rock Mechanics and Modeling
- Fish biology, ecology, and behavior
- Geological and Tectonic Studies in Latin America
- Geological and Geophysical Studies Worldwide
- Underground infrastructure and sustainability
- Hydrology and Sediment Transport Processes
Norwegian Geotechnical Institute
2023-2024
University of Oslo
2022-2024
Volcanic Basin Petroleum Research (Norway)
2018-2023
ETH Zurich
2023
Vitenparken
2018-2019
University of Bergen
2015-2018
University of Bern
2013
High resolution acoustic data and a 15.7 m long sediment core from the Hardangerfjorden system, western Norway, have been analyzed to increase our knowledge on depositional environments, submarine mass movement trigger mechanisms frequencies in high latitude fjord systems. The seismic profiles show that an up 160 thick glacimarine-dominated unit, of probably Younger Dryas age, has deposited above basement. A < 55 comprising stacked transport deposits (MTDs) atop glacimarine unit. identified...
Abstract Trough mouth fans comprise the largest sediment deposits along glaciated margins, and record Pleistocene climate changes on a multi-decadal time scale. Here we present model for formation of North Sea Fan derived from detailed horizon attribute interpretations high-resolution processed 3D seismic reflection data. The interpretation shows that stacked channel-levee systems form up to 400 m thick sedimentary sequences. channels are elongated can be traced shelf edge towards deep basin...
High-resolution 3D (HR3D) seismic data are important for hydrocarbon exploration of shallow reservoirs, site characterization, and geohazard assessments. The goal this contribution is to identify quantify the parameters increase resolution HR3D meter scale. main acquisition controlling collected spectrum source, source-receiver offset range, trace density. An evolution one-meter-scale will rely on combining a reproducible source with high frequencies up at least 600 Hz, uniform density more...
High-resolution seismic and sediment core data from the 'Grand Lac' basin of Lake Geneva reveal traces repeated slope instabilities with one main slide-evolved mass-flow (minimum volume 0.13 km3) that originated northern lateral lake near city Lausanne. Radiocarbon dating organic remains sampled top deposit gives an age interval 1865–1608 BC. This date coincides for a mass movement event described in 'Petit (1872–1622 BC). Because multiple movements took place at same time different parts...
Trough mouth fans (TMFs) are major submarine depocentres that form in front of ice streams advancing onto the continental shelf, and they provide extensive records past glaciations ice-sheet dynamics. However, early research about TMFs was conducted using primarily 2D seismic data, which limits insights on deposit's geometries internal structures more recent studies 3D data have focused general depositional history TMFs. Here, we assess spatial temporal changes glacio-marine landforms...
Abstract Along continental margins with rapid sedimentation, overpressure may build up in porous and compressible sediments. Large-scale release of such has major implications for fluid migration slope stability. Here, we study if the widespread crater-mound-shaped structures subsurface along mid-Norwegian margin are caused by that accumulated within high-compressibility oozes sealed low-permeability glacial muds. We interpret 56 000 km 2 3D 150 2D-cubed seismic data Norwegian Sea, combining...
Large lacustrine mass movements and delta collapses are increasingly being considered as potential tsunamigenic sources therefore hazardous for the population infrastructure along lakeshores. Although historical reports document tsunami events in several lakes Switzerland, although propagation of lake tsunamis has been studied by numerical wave modeling, only little is known about on- offshore deposits. In Lake Sils, a large prehistoric mass-movement deposit originating from Isola Delta with...
Abstract High-resolution seismic data are powerful tools that can help the offshore industries to better understand nature of shallow subsurface and plan development vulnerable infrastructure. Submarine mass movements gas among most significant geohazards in petroleum prospecting areas. A variety high-resolution geophysical datasets collected Barents Sea have significantly improved our knowledge recent decades. Here we use a c. 200 km 2 P-Cable 3D cube from Hoop area, SW Sea, study 20–65 m...
Abstract The NE Atlantic volcanic rifted margins include vast underexplored basin areas neighbouring mature petroleum-producing regions. We appraise the cross-border prospectivity of outer and central Faroe–Shetland, Møre southern Vøring basins present insights from extensive new 3D seismic surveys. Regional surfaces are used to compile a profile highlighting key discoveries UK Rosebank field in SW Norwegian Ormen Lange NE. Cretaceous Paleocene reservoirs remain main exploration focus...
The thick sequence of Quaternary sediments preserved within the northern North Sea contains important information about glacial history, palaeo-oceanographic conditions and slope stability this region during last 2.6 million years. interplay between glacial, fluvial contouritic processes can be determined from seismic stratigraphic studies. Here, horizon, attribute geomorphological interpretations an extensive 2D dataset (∼100,000 km2) two 3D cubes (∼18,400 are integrated with lithological...
Abstract Submarine landslides can be several orders of magnitude larger than their terrestrial counterparts and pose significant hazards across entire ocean basins. The landslide failure mechanism strongly controls the associated tsunami hazard. Tampen Slide offshore Norway is one largest on Earth but remains poorly understood due to its subsequent burial beneath up 450 m sediments. Here, we use laterally extensive (16,000 km 2 ), high‐resolution processed 3‐D seismic reflection data...
Abstract High‐Alpine regions are prone to a large variety of geohazards, among which earthquakes have the strongest impact on landscape and local population. Historic records indicate moderate high seismic activity in northern, south‐western central parts Switzerland. In contrast, south‐eastern Switzerland has less historic earthquake chronicles due low population density, resulting poorly constrained event catalogue. The aim this study is evaluate palaeoseismic for by using sedimentary...
Glaciogenic reservoirs host important hydrocarbon resources across the globe. Examples such as Peon and Aviat discoveries in North Sea show that Quaternary Neogene can be prospective region. In this study, we interpret 2D 3D reflection seismic data combined with borehole information to document unconventional play models from shallow subsurface of Norwegian Continental Shelf Faroe-Shetland Basin. These plays include (i) glacial sands ice-marginal outwash fans, sealed by stiff subglacial...
Abstract Plio-Pleistocene records of ice-rafted detritus suggest NW European ice sheets regularly reached coastlines. However, these provide limited insight on the frequency, extent and dynamics delivering detritus. Three-dimensional reflection seismic data glaciated margin have previously documented buried landforms that inform us uncertainties. This paper reviews combines existing with new geomorphological observations to catalogue landform occurrence along considers how they relate sheet...
Abstract Proglacial braided river systems discharge large volumes of meltwater from ice sheets and transport coarse-grained sediments the glaciated areas to oceans. Here, we test hypothesis if high-energy hydrological events can leave distinctive signatures in sedimentary record systems. We characterize morphology infer a mode formation 25 km long 1–3 wide Early Pleistocene incised valley recently imaged 3-D seismic data Hoop area, SW Barents Sea. The fluvial system, named Bjørnelva River...
Summary Glacial landforms identified in seismic 3D and multibeam data of the Barents Sea have improved knowledge about past glaciations associated geohazards. High-resolution P-Cable were acquired this area with an inline separation 6 m, a source frequency range 5–350 Hz source-receiver offset 120–160 m. Seabed images derived from show increased resolution sharpness compared to conventional echosounder data. buried Upper Regional Unconformity (URU) data, revealing previously unrecognized...