Browsing Department of Earth Science by Title
Now showing items 1159-1178 of 1215
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Transition from Late-Miocene syn-orogenic extension to Plio-Pleistocene Corinth Rifting in the Southern Hellenides, Northern Peloponnese, Greece
(Journal article; Peer reviewed, 2024)This study investigates the Late Miocene to Pliocene transition from contractional to extensional tectonics in the upper plate of the Western Aegean retreating subduction system focusing on the Northern Peloponnese area, ... -
Transition metal isotope fractionation in marine hydrothermal deposits of the Mohns Ridge, North Atlantic Ocean
(Doctoral thesis, 2012-08-24)Seafloor hydrothermal vent systems form along mid-ocean ridges in all of the Earth’s oceans. They have a major impact on the chemical exchange between the lithosphere and the hydrosphere, as vast volumes of seawater cycle ... -
Transnational Access to Research Facilities: an EPOS service to promote multi-domain Solid Earth Sciences in Europe
(Journal article; Peer reviewed, 2022)Transnational access (TNA) allows cross-border, short-term and frequently free-of-charge access to world-class research facilities, to foster collaborations and exchanges of experience. Specifically, TNA aims to encourage ... -
Transport of mafic magma through the crust and sedimentary basins: Jameson Land, East Greenland
(Journal article; Peer reviewed, 2021)Igneous sheet-complexes transport magma through the crust, but most studies have focused on single segments of the magma transport system or have low resolution. In the Jameson Land Basin in East Greenland, seismic reflection ... -
Traveltime approximation for strongly anisotropic media using the homotopy analysis method
(Peer reviewed; Journal article, 2019)Traveltime approximation plays an important role in seismic data processing, for example, anisotropic parameter estimation and seismic imaging. By exploiting seismic traveltimes, it is possible to improve the accuracy of ... -
Tredimensjonal gravimetrisk modellering på Vøring marginen
(Master thesis, 2008-06-02)En tredimensjonal litosfæremodell ble konstruert for Vøring marginen, utenfor kysten av Midt-Norge. Grunnlaget for modellen var 32 tolkede OBS-profiler. 11 regionale grenseflater ble digitalisert fra hvert av de 32 ... -
Trigger mechanisms for sand intrusions. Inferences from published data and investigation of 3D seismic data from the northern North Sea
(Master thesis, 2018-04-17)Numerous publications have addressed subsurface sediment remobilization, in terms of geometries of the intrusions, where the intrusions occur, the parent unit of the intrusions and trigger mechanisms. Several authors have ... -
Tropical temperature variations during the last glacial cycle from stalagmite fluid inclusions
(Master thesis, 2024-06-03)Low latitudes play a key role in the Earth's climate system, receiving the highest amount of solar energy that is redistributed across the globe through atmospheric and oceanic circulation. The MIS 5a – 4 boundary, ... -
Tsunami risk communication and management: Contemporary gaps and challenges
(Journal article; Peer reviewed, 2022)Very large tsunamis are associated with low probabilities of occurrence. In many parts of the world, these events have usually occurred in a distant time in the past. As a result, there is low risk perception and a lack ... -
Turbidites in the Eocene of Spitsbergen: can they tell us something about the Sørvestsnaget Basin?
(Conference lecture, 2017) -
Turbidites, topography and tectonics: Evolution of submarine channel-lobe systems in the salt-influenced Kwanza Basin, offshore Angola
(Journal article; Peer reviewed, 2021)Understanding the evolution of submarine channel‐lobe systems on salt‐influenced slopes is challenging as these systems react to subtle, syn‐depositional changes in sea‐floor topography. The impact of large blocking ... -
U-Pb zircon provenance of metamorphosed clastic sediments in a developing rift (Dom Feliciano Belt, Uruguay and Kaoko Belt, Namibia)
(Master thesis, 2014-11-17)Geochronological studies of the westernmost part of the Kaoko Belt in Namibia, the Coastal Terrane, revealed zircons with distinct Neoproterozoic ages, that are no known from other parts of this orogen and an exotic origin ... -
Ultramafic rock carbonation: Constraints from listvenite core BT1B, Oman Drilling Project
(Journal article; Peer reviewed, 2020)The occurrence of the quartz-carbonate alteration assemblage (listvenite) in ophiolites indicates that ultramafic rock represents an effective sink for dissolved CO2. However, the majority of earlier studies of ultramafic ... -
UncertainData.jl: a Julia package for working with measurements and datasets with uncertainties
(Journal article; Peer reviewed, 2019-11-01)UncertainData.jl provides an interface to represent data with associated uncertainties for the Julia programming language (Bezanson, Edelman, Karpinski, & Shah, 2017). Unlike Measurements.jl (Giordano, 2016), which deals ... -
Undersøkelser av alder, volum og utbredelse av Gloppedalsura, Bjerkreim og Gjesdal kommuner, i Rogaland
(Master thesis, 2018-06-30)This master thesis examines the age, volume and extent of Gloppedalsura in Bjerkreim and Gjesdal communities in Rogaland county. The Schmidt Hammer is used for estimating age. This method is widely used as a relative dating ... -
Undersøking av forholdet mellom flaumstorleik og sediment i Vangsvatnet
(Master thesis, 2019-06-26)Masterprosjektet «Undersøking av forholdet mellom flaumstorleik og sediment i Vangsvatnet» er ein del av HordaFlom-prosjektet, som ønsker å auke kunnskapsgrunnlaget i kommunal forvaltning med tanke på flaumutfordringar ... -
Unraveling distinctive sulphide mineralization and hydrothermal alteration on shallow seafloor hydrothermal systems
(Master thesis, 2017-04-22)Since the discovery of seafloor hydrothermal systems in the late 1970´s, they have been found in different types of geological settings. Recent discoveries of active, inactive and inferred vent fields on the Arctic Mid ... -
Unraveling the mechanisms and implications of a stronger mid-Pliocene Atlantic Meridional Overturning Circulation (AMOC) in PlioMIP2
(Journal article; Peer reviewed, 2023)The mid-Pliocene warm period (3.264–3.025 Ma) is the most recent geological period in which the atmospheric CO2 concentration was approximately equal to the concentration we measure today (ca. 400 ppm). Sea surface temperature ... -
An updated Weichselian chronostratigraphic framework of the Kongsfjorden Trough Mouth Fan and its implications for the glacial history of Svalbard
(Journal article; Peer reviewed, 2022)The Arctic is a climate-sensitive area, responding rapidly to present changes, but for the past changes, the record is still incomplete. For instance, the Weichselian glacial history of the Svalbard–Barents Sea Ice Sheet ... -
Updating of geological surfaces during drilling by map migration
(Master thesis, 2023-01-23)The accuracy of the geological surfaces in an earth model is dependent on the estimation of the velocities from surface seismic data. The dataset recorded from reverse VSP of the drill bit continuous signal can be utilized ...