Blar i Department of Earth Science på tittel
Viser treff 122-141 av 1103
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Computationally Efficient Methods for Seismic Modeling and Inversion
(Doctoral thesis, 2020-11-18)This thesis presents new methods for the modeling of seismic waveforms based on ray theory and ray-Born integrals. The waveforms are used in forward modeling, imaging and full waveform inversion and are computed in 3D ... -
A conceptual geological model for offshore wind sites in former ice stream settings: The Utsira Nord site, North Sea
(Journal article; Peer reviewed, 2022)Conceptual geological models of the shallow subsurface that integrate geological and geotechnical information are important for more strategic data acquisition and engineering at offshore wind sites. Utsira Nord is an ... -
Configuration of the Scandinavian Ice Sheet in southwestern Norway during the Younger Dryas
(Journal article; Peer reviewed, 2023)The extent of the Scandinavian Ice Sheet in southwestern Norway is precisely located during the well-characterized Younger Dryas re-advance. However, the thickness of the ice sheet is less well constrained inland from the ... -
A conjugate fault revealed by the destructive Mw 5.6 (November 21, 2022) Cianjur earthquake, West Java, Indonesia
(Journal article; Peer reviewed, 2023)On 21 November 2022, a destructive earthquake (Mw 5.6) struck Cianjur, West Java, Indonesia, resulting in at least 321 deaths, damage to 47,000 buildings, and economic losses of up to 7.7 trillion Indonesian Rupiahs (∼US ... -
Consistent fluctuations in intermediate water temperature off the coast of Greenland and Norway during Dansgaard-Oeschger events
(Peer reviewed; Journal article, 2019-11-01)Rapid warmings epitomize the Dansgaard-Oeschger events that are recorded in Greenland ice cores and imprinted in ocean sediment cores. While the abrupt climate changes appear connected to perturbations in sea ice and ocean ... -
Constraining the 3-D Geometry of Fold-Thrust Belts Using Section Balancing vs. 3-D Interpolative Structural and Probabilistic Modeling
(Journal article, 2023)Quantitative uncertainty analysis, 2-D and 3-D modeling of the subsurface, as well as their visualization form the basis for decision making in exploration, nuclear waste storage and seismic hazard assessment. Methods such ... -
Constraining the tectonic evolution of rifted continental margins by U–Pb calcite dating
(Journal article; Peer reviewed, 2023)We employ U–Pb calcite dating of structurally-controlled fracture fills within crystalline Caledonian basement in western Norway to reveal subtle large-scale tectonic events that affected this rifted continental margin. ... -
A continent-wide detailed geological map dataset of Antarctica
(Journal article; Peer reviewed, 2023)A dataset to describe exposed bedrock and surficial geology of Antarctica has been constructed by the GeoMAP Action Group of the Scientific Committee on Antarctic Research (SCAR) and GNS Science. Our group captured existing ... -
Continuous and episodic sedimentation in western Norwegian fjord lakes. A Holocene climatic perspective
(Doctoral thesis, 2011-10-21)A Holocene chronology of hazardous events has been constructed in parallel with a new record of glacier variability from inner Nordfjord in western Norway, based on the analysis of seismic profiles and sediment cores from ... -
A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka
(Journal article; Peer reviewed, 2020)Volcanic ash preserved in marine sediment sequences is key for independent synchronization of palaeoclimate records within and across different climate archives. Here we present a continuous tephrostratigraphic record from ... -
Contractional deformation of porous sandstone: Insights from the Aztec Sandstone, SE Nevada, USA
(Peer reviewed; Journal article, 2015-05)Contractional deformation of highly porous sandstones is poorly explored, as compared to extensional deformation of such sedimentary rocks. In this work we explore the highly porous Aztec Sandstone in the footwall to the ... -
Contractional deformation of porous sandstones. Laramide and Sevier deformation of the Navajo and Aztec sandstones in western USA
(Doctoral thesis, 2015-02-16)In response to stress, high porosity sandstones tend to deform and localize strain in the form of deformation bands, which form by rotation, sliding and potentially crushing of grains. Contrary to slip surfaces and fractures, ... -
Contrasting geomorphic and stratigraphic responses to normal fault development during single and multi-phase rifting
(Journal article; Peer reviewed, 2022-01-10)Understanding the impact of tectonics on surface processes and the resultant stratigraphic evolution in multi-phase rifts is challenging, as patterns of erosion and deposition related to older phases of extension are ... -
Control of increased sedimentation on orogenic fold-and-thrust belt structure-insights into the evolution of the Western Alps
(Peer reviewed; Journal article, 2019-03-13)We use two-dimensional thermomechanical models to investigate the potential role of rapid filling of foreland basins in the development of orogenic foreland fold-and-thrust belts. We focus on the extensively studied example ... -
Controls of basement fabric on cover faulting in strike-slip regimes: analogue physical models of faults using plaster
(Master thesis, 2015-06-01)The full complexity of deformation associated with natural faults is difficult to understand, given the lack of three-dimensional exposure in outcrop and the limitations of seismic resolution in the sub-surface. Analogue ... -
Controls on architecture and seismic imaging of igneous intrusions: Examples from LIDAR outcrop data on Traill Ø (East Greenland) and seismic data from the conjugate Møre Margin
(Master thesis, 2017-06-27)Intrusion of sills into sedimentary successions is a fundamental and widespread process in basins at volcanic rifted margins. Although intrusions emplaced at shallow paleodepths (<1.5 km) are relatively well understood, ... -
Controls on deformation band formation in carbonate grainstones along the Maghlaq Fault, Malta.
(Master thesis, 2018-06-20)Deformation bands are common structures in deformed porous rocks and sediments, that localise strain in millimetre to centimetre thick tabular zones. Deformation bands occurring in siliciclastic rocks have been described ... -
Controls on hydrocarbon column-heights in the Eastern province of Haltenbanken, the Norwegian Sea
(Master thesis, 2016-11-08)Knowledge of controls on hydrocarbon column-heights is highly relevant in hydrocarbon exploration, and important for determination of in-place volumes of prospects. The eastern province of Haltenbanken in the Norwegian Sea ... -
Controls on hydrocarbon column-heights in the north-eastern North Sea
(Master thesis, 2015-06-30)Knowledge about the controls on hydrocarbon column-heights is important in hydrocarbon exploration, as such column heights are the main controlling factor for in-place volumes of prospects. The north-eastern Viking Graben ... -
Controls on river patterns in active tectonic settings in the central Italian Apennines
(Master thesis, 2016-05-31)The central Italian Apennines have gone through a complex evolutionary history, involving compression and subsidence, followed by extension and uplift. The last 3 Ma, the area has experienced active extension, and presently ...