Browsing Department of Earth Science by Title
Now showing items 1199-1218 of 1245
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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 ... -
Unveiling the inherent physical-chemical dynamics: Direct measurements of hydrothermal fluid flow, heat, and nutrient outflow at the Tagoro submarine volcano (Canary Islands, Spain)
(Journal article; Peer reviewed, 2024)Tagoro is one of the few submarine volcanoes in the world that has been monitored since its early eruptive stage in 2011 to present day. After six multidisciplinary oceanographic cruises conducted between 2014 and 2023 to ... -
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 ... -
Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea
(Journal article; Peer reviewed, 2020)Transform margins represent strike-slip type of plate boundaries that form during continental breakup and initial ocean opening. They are often characterized by margin-parallel highs with exposed pre- and syn-rift sequences. ... -
Urban basin deposit. The pollution history of Lille Lungegårdsvannet, Bergen
(Doctoral thesis, 2014-12-09)The sediments within urban lakes will, if left undisturbed, reflect a part of the history of the city through the record of chemical compounds. The sediment chemistry in Lille Lungegårdsvannet in Bergen city is ... -
Use of inverse rock physics modeling in reservoir characterization
(Master thesis, 2012-05-31)Reservoir characterization based on seismic data demands a robust and reliable method that transforms seismically derived parameters such as elastic moduli, P-velocity, S-velocity or acoustic impedance into parameters ... -
Using climate to relate water-discharge and area in modern and ancient catchments
(Peer reviewed; Journal article, 2018-06)Models relating sediment supply to catchment properties are important in order to use the geological record to deduce landscape evolution and interplay between tectonics and climate. Water-discharge (Qw) is an important ... -
Using grain size analysis to understand transverse versus axial sediment supply to a rift: Example from the Sperchios rift, Greece
(Master thesis, 2016-06-01)In order to better understand the interaction between different controlling variables in fluvial systems in a rift basin, and the differences between transverse and axial drainage in the same setting, I present the results ... -
Using microcomputed tomography (μCT) to count varves in lake sediment sequences: Application to Lake Sagtjernet, Eastern Norway
(Journal article; Peer reviewed, 2023)Varved lake sediments are one of the most important natural archives that allow annual resolution paleoclimate reconstructions. Conventional varve counting techniques use thin sections to manually identify lamina. However, ... -
Using simulations of the last millennium to understand climate variability seen in palaeo-observations: Similar variation of Iceland-Scotland overflow strength and Atlantic Multidecadal Oscillation
(Peer reviewed; Journal article, 2015-02-10)A recent palaeo-reconstruction of the strength of the Iceland–Scotland overflow during the last 600 years suggests that its low-frequency variability exhibits strong similarity with palaeo-reconstructions of the Atlantic ... -
Using stable copper isotopes to trace contamination from two historical mining sites in Norway
(Master thesis, 2020-07-01)During the last few decades, the stable copper isotope system (d65Cu) has gained attention because of its potential as a method to indicate the source of copper in contaminated surface waters. The d65Cu of dissolved copper ... -
Using VSP to improve interpretation of ocean bottom seismic
(Master thesis, 2011-02-21)Operating companies work continuously on increasing their knowledge about the reservoir. In mature areas of the North Sea many wells have been drilled, which can be used to obtain improved images of the subsurface in the ... -
Variability in ISOW vigor over the last 1300 years and its relationship to climate
(Master thesis, 2009-06-02)Resolving the scale and origins of recent low frequency (decadal-centennial) climate variations, such as the AMO, is crucial for predicting how natural variability and anthropogenic forcing will interact to affect future ...