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norskBlar i tittel Fakultet for naturvitenskap og teknologi
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Last glacial ice sheet dynamics offshore NE Greenland – a case study from Store Koldewey Trough
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-04)The presence of a grounded Greenland Ice Sheet on the northeastern part of the Greenland continental shelf during the Last Glacial Maximum is supported by new swath bathymetry and high-resolution seismic data, supplemented with multi-proxy analyses of sediment gravity cores from Store Koldewey Trough. Subglacial till fills the trough, with an overlying drape of maximum 2.5 m thick glacier-proximal ... -
Last Glacial Maximum – Holocene palaeoenvironment in Bessel Fjord and southwestern Dove Bugt, Northeast Greenland
(Master thesis; Mastergradsoppgave, 2020-05-14)Marine studies reconstructing ice sheet conditions on the Northeast Greenland shelf and adjacent fjords since the Last Glacial Maximum (LGM) are sparse. As a result, the timing and origin of the deglaciation of the ice sheet over marine areas is not well constrained. This thesis aims to improve our understanding of the LGM, deglaciation, and Holocene ice dynamics of the Greenland Ice Sheet (GrIS) ... -
The last hop of global notification delivery to mobile users. Matching preferences, context, and device constraints.
(Research report; Forskningsrapport, 2004)Events injected by publishers into a publish/subscribe system may reach users through a variety of devices: a stationary desktop, a laptop, a mobile phone, etc. We argue that the "last hop" -- from the network to the output device -- has unique properties, owing to the mobile nature of these devices, and as such demands special consideration. In particular, user's preferences and location may limit ... -
The last two millennia: climate, ocean circulation and paleoproductivity inferred from planktic foraminifera, south-western Svalbard margin
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-20)We reconstruct climate and changes in water-mass properties in relation to variations in palaeoproductivity at the south-western Svalbard margin throughout the last 2000 years. Environmental conditions in subsurface (ca. 250–75 m) and near-surface to surface water (75–0 m) were studied on the basis of the distribution patterns and fluxes of planktic foraminiferal faunas. Stable isotopes in three ... -
Late Cenozoic development of the continental margin off Lofoten-Vesterålen and Troms
(Conference object; Konferansebidrag, 2011) -
Late Cenozoic development of the mid-Norwegian continental margin – a study of the Naust Formation based on 3D-seismic data
(Master thesis; Mastergradsoppgave, 2020-06-15)The late Cenozoic evolution of the outer continental shelf and slope on the northern part of the mid-Norwegian margin is studied using 3D seismic data. The late Cenozoic stratigraphy is subdivided into four main seismic units: unit A (oldest) to D and correlated to the established stratigraphic framework of the Naust Formation, where the oldest unit in this study correlates to the upper part of Naust ... -
Late Cenozoic erosion estimates for the northern Barents Sea: Quantifying glacial sediment input to the Arctic Ocean
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-14)A compilation of seismic data has been used to characterize the Neogene – Quaternary sedimentary succession of the northwestern Barents Sea continental margin to better understand the paleoenvironmental evolution and the sedimentary processes involved. The Neogene strata are dominated by contourites related to the ocean circulation established from the opening of the Fram Strait connecting the ... -
Late Cenozoic erosion in the SW Barents Sea, and its influence on salt movement
(Master thesis; Mastergradsoppgave, 2019-05-15)The late Cenozoic evolution of the southwestern Barents Sea shelf includes periods of uplift, erosion and glaciations. This part of the stratigraphy has been studied using 2D and 3D seismic data, with emphasis on the interplay between uplift, erosion and glaciations and salt movement. The study area comprises the Svalis, Samson and Norvarg domes and the Nordkapp Basin, where halokinesis has been a ... -
Late Cenozoic paleoenvironment and erosion estimates for the NE Svalbard continental margin – preliminary results
(Conference object; Konferansebidrag, 2017) -
Late Cenozoic paleoenvironments in the Veslemøy High area, SW Barents Sea based on 3D- and 2D- seismic data
(Master thesis; Mastergradsoppgave, 2009-05)The aim of this master thesis has been to interpret the Late Cenozoic paleo-environments and the sedimentary processes in the Veslemøy High area, southwestern Barents Sea. Six seismic units and eight seismic unconformities, including the seafloor, are identified in the study area and correlated with previous work in the Sørvestnaget Basin. Submarine channels with a downslope (E-W) orientation suggest ... -
Late Devonian–Carboniferous faulting and controlling structures and fabrics in NW Finnmark
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-10)In the SW Barents Sea, Devonian–Carboniferous collapse led to the formation of major basins and faults, e.g., the Hammerfest Basin bounded by the Troms–Finnmark Fault Complex, and rhomboid- to sigma-shaped (half-)grabens on the Finnmark Platform. High-resolution aeromagnetic and bathymetry data from the shallow shelf show that analogue fault systems are present in coastal and onshore areas of NW ... -
Late glacial and deglacial paleoceanographic and environmental changes at Vestnesa Ridge, Fram Strait: challenges in reading methane-influenced sedimentary records
(Doctoral thesis; Doktorgradsavhandling, 2017-01-18)Denne avhandlingen er basert på fire sedimentkjerner fra et område ved Vest Svalbard hvor metan siver opp fra havbunnen. Studien fokuserer på å rekonstruere graden av metanutsiving i fortiden, samt klimavariasjoner i Arktiske strøk med bruk av bentiske foraminiferer. Foraminiferer er encellede organismer som produserer en kalkholdig skall som bevares i sedimentene på havbunnen. Ved å se på geokjemiske ... -
Late Glacial – Holocene climate variability and sedimentary environments on northern continental shelves Zonal and meridional Atlantic Water advection
(Doctoral thesis; Doktorgradsavhandling, 2011-03-22)The overall objective for this PhD-study was to further advance the understanding of the oceanographic variability and development in the Nordic Seas during the Late Glacial and the Holocene and towards the present. The focus is specifically on the poleward Atlantic Water advection along the continental margins of Norway, into the SW Barents Sea and along the West Spitsbergen slope. Four high ... -
A Late Glacial–Early Holocene multiproxy record from the eastern Fram Strait, Polar North Atlantic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014) -
Late Holocene climate variability in the North Atlantic realm from paleo data and climate simulations
(Master thesis; Mastergradsoppgave, 2013-05-31)This thesis presents the results of the comparative analysis of surface temperature series from paleoproxy reconstructions and climate simu- lations. The proxy to model comparison is done using the results from 12 simulations produced by 5 different climate models covering the pe- riod of the late Holocene. Agreement between the model results and the paleoproxy reonstrcuctions is analyzed both on ... -
Late Holocene pteropod distribution across the base of the south-eastern Mediterranean margin: the importance of the > 63 µm fraction
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-17)Euthecosomata pteropods were analysed in core sediments collected in the framework of the 2016 EUROFLEETS2 SEMSEEP cruise, offshore of Israel, in the eastern Mediterranean Sea. The investigated cores were retrieved in a deep-sea coral area at 690 m depth, an actively methane-seeping pockmark area at 1038 m depth, and a deep-sea channel area at 1310 m water depth. We identified and documented the ... -
Late Miocene Ice Rafting in the Iceland Sea. Evidence from coarse fraction analysis of ODP Site 907
(Master thesis; Mastergradsoppgave, 2018-05-15)A high-resolution sedimentary record from ODP Leg 151 Hole 907A has been investigated with sedimentological and geochemical methods to study the paleoenvironmental evolution of the Iceland Sea over a 1-Myr time interval in the Late Miocene. Climate deterioration characterizes the Neogene period, culminating in a transition to bipolar glaciations in the Late Pliocene (Thiede and Myhre, 1996). Ice ... -
Late Paleoproterozoic and Mesoproterozoic magmatism of the Nico Pérez Terrane (Uruguay): Tightening up correlations in southwestern Gondwana
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-04)New geochronological, isotopic and geochemical data were obtained from the late Paleoproterozoic and Mesoproterozoic magmatic units of the Nico Pérez Terrane (Uruguay). A U-Pb LA-ICP-MS zircon age of 1768 ± 11 Ma confirms the Statherian age for the Illescas rapakivi intrusion, being thus comparable with the age of the Campanero Unit felsic orthogneisses. Though both the Illescas and Campanero ... -
The Late Paleozoic development of the Ottar basin from seismic 3D interpretation
(Master thesis; Mastergradsoppgave, 2018-05-15)The Late Paleozoic sedimentary environments of the Ottar basin in the SW Barents Sea was studied using five 3D seismic surveys. By the use of seismic stratigraphic analysis and correlation to wells located in close proximity to the study area, the Paleozoic succession has been subdivided into 4 main units: Billefjorden Group (Late Devonian – Mid Carboniferous), Gipsdalen Group (Mid Carboniferous – ... -
Late Paleozoic-Cenozoic fault correlation and characterization of fault rocks in western Troms, North Norway
(Master thesis; Mastergradsoppgave, 2013-05-29)The present work focuses on the mapping and description of onshore brittle fault zones on the SW Barents Sea Margin, within gneisses and granitic intrusions belonging to the West Troms Basement Complex. The description of the brittle structures includes the geometry, kinematics and fault rock characteristics, using DEM satellite imaging, structural field work and a microstructural analysis of the ...
