A5011927280- Geological formations and processes
- Geological Studies and Exploration
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Geophysical and Geoelectrical Methods
- Seismic Waves and Analysis
- Underwater Acoustics Research
- earthquake and tectonic studies
- Reservoir Engineering and Simulation Methods
- Geological and Geochemical Analysis
- Geological Modeling and Analysis
- Hydraulic Fracturing and Reservoir Analysis
- Geophysical Methods and Applications
- Underwater Vehicles and Communication Systems
- Drilling and Well Engineering
- Landslides and related hazards
- Geomagnetism and Paleomagnetism Studies
- Marine animal studies overview
- Geological and Tectonic Studies in Latin America
- Seismology and Earthquake Studies
- High-pressure geophysics and materials
- CO2 Sequestration and Geologic Interactions
Norwegian University of Science and Technology
2015-2024
Physical Sciences (United States)
2024
Acoustics (Norway)
2023
Norwegian University of Life Sciences
2021
Applied Petroleum Technology (Norway)
2020
NTNU Samfunnsforskning
2015
Nasjonalt Kunnskapssenter for Helsetjenesten
2012
Shell (Norway)
2007
Equinor (Norway)
1995-2007
Electromagnetic Geoservices (Norway)
2002-2007
Detecting and assessing hydrocarbon reservoirs without the need to drill test wells is of major importance petroleum industry. Seismic methods have traditionally been used in this context, but results can be ambiguous. Another approach use electromagnetic sounding that exploit resistivity differences between a reservoir containing highly resistive hydrocarbons one saturated with conductive saline fluids. Modeling presented by Eidesmo et al. (2002) demonstrates using seabed logging (SBL),...
Abstract Our oceans are critical to the health of our planet and its inhabitants. Increasing pressures on marine environment triggering an urgent need for continuous comprehensive monitoring stressors, including anthropogenic activity. Current ocean observational systems expensive have limited temporal spatial coverage. However, there exists a dense network fibre-optic (FO) telecommunication cables, covering both deep coastal areas around globe. FO cables untapped potential advanced acoustic...
In a post-industrial whaling world, flagship and charismatic baleen whale species are indicators of the health our oceans. However, traditional monitoring methods provide spatially temporally undersampled data to evaluate mitigate impacts increasing climatic anthropogenic pressures for conservation. Here we present first case wildlife using distributed acoustic sensing (DAS). By repurposing globally-available infrastructure sub-sea telecommunication fiber optic (FO) cables, DAS can (1)...
Seismic imaging techniques can readily detect potential hydrocarbon (HC) traps but discriminating between the presence of water or hydrocarbons in such has remained a challenge. Detection subsurface by an active source electromagnetic (EM) sounding application, termed seabed logging (SBL), recently shown very promising results, until now not been fully demonstrated. Here, we present SBL data from Troll West Gas Province (TWGP), offshore Norway, providing irrefutable evidence for direct...
Climate change is impacting the Arctic faster than anywhere else in world. As a response, ecosystems are rapidly changing. result, we can expect rapid shifts whale migration and habitat use concurrent with changes human patterns. In this context, responsible management conservation requires improved monitoring of presence movement over large ranges, at fine scales near-real-time compared to legacy tools. We demonstrate that could be enabled by Distributed Acoustic Sensing (DAS). DAS converts...
Distributed acoustic sensing (DAS) leverages an ocean-bottom telecommunication fiber-optic cable into a densely sampled array of strain sensors. We demonstrate DAS applications to passive monitoring through experiment on submarine in Longyearbyen, Svalbard, Norway. find that can measure many types signals the frequency range from 0.01 20 Hz generated by dynamics atmosphere, ocean, and solid earth. These include loading pressure fluctuation ocean surface waves storms, winds, airflow...
Hydrothermal circulation is a fundamental Earth process that transfers elements and minerals from the crust mantle to oceans. This commonly occurs along tectonic plate boundaries in oceans, where heat sources are located at relatively shallow depths (~2–3 km). Cold seawater percolates downward, becomes heated, enriched with host rock magmatic volatiles. The resulting hot fluids (exceeding 300°C) rise buoyantly expelled into ocean through chimney-like structures on...
Reconstructing the evolution of ice sheets is critical to our understanding global environmental system, but most detailed palaeo-glaciological reconstructions have hitherto focused on very recent history sheets. Here, we present a three-dimensional (3D) reconstruction changing nature ice-sheet derived sedimentary architecture through Quaternary Ice Age almost 3 Ma. An extensive geophysical record documents marine-terminating, calving Fennoscandian Sheet (FIS) margin periodically...
SUMMARY Insights into the spreading evolution of Knipovich Ridge and development Fram Strait are revealed from a recent aeromagnetic survey. As an ultraslow ridge in oblique system located between Svalbard–Barents Sea Northeast Greenland rifted margins, dynamics opening has long been debated. Its 90° bend with Mohns Ridge, rare plate tectonics, affects motivates study crustal deformation this distinctive configuration. We identified magnetic isochrons on either side present-day Ridge. These...
Abstract Canyons and other sediment conduits are important components of the deep‐water environment main pathways for transport from shelf to basin floor. Using 3‐D 2‐D seismic reflection data, facies statistical morphometric analyses, this study showed architectural evolution five canyons, two slide scars four gullies on southern part Loppa High, Barents Sea. Morphometric parameters such as thalweg depth (lowest point a conduit's base), wall (middle point), height, width base width,...
Monitoring a time-lapse geophysical anomaly due to variation in the pore-fluid contents of subsurface reservoir is critical for further development and management. However, it may be difficult detect changes P-wave responses beyond certain level saturation. A comprehensive 3D finite-difference time domain (FDTD) forward modeling, based on idealized resistivity structures, demonstrates possibility marine controlled-source electromagnetic (CSEM) surveying monitor movement [Formula: see text]...
Abstract The SW Ecuador‐NW Peru forearc region is the southernmost location, where Caribbean large igneous province (CLIP) interacted with South American margin since Late Cretaceous. accretion of CLIP to led entrapment North Andean crustal Sliver, conforming underlying basement in Ecuador, whereas NW Peru, depocenters involve rocks continental affinity. Many existing tectonic reconstructions have treated these two areas independently, largely based on their affinities. In contrast, this...
Abstract The glacimarine shelf‐edge is a complex depositional environment in which the interplay between accommodation and glaciation has played an important role influencing sediment deposition margin architecture. It can be challenging to unravel history of basin infill these areas, particularly where landforms are deeply buried. This study presents integrated workflow for deciphering architecture evolution erosional elements crucial location south‐western Barents Sea margin, with focus on...
Over 7500 buried linear and curvilinear depressions interpreted as iceberg ploughmarks were identified within the Quaternary Naust Formation from an extensive three-dimensional seismic dataset that covers ~ 40,000 km2 of mid-Norwegian continental margin. The morphology net orientation mapped analysed. These features are up to 28 km long, 700 m wide incised 31 deep. On average, 5 deep, with median width 185 lengths ranging 1.2 2.7 for individual palaeo-surfaces. Width depth ratio ranges 8:1...