Blar i Department of Earth Science på tittel
Viser treff 198-217 av 1103
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Deltaic clinothems − Digital data capture, geometries, and reservoir implications
(Doctoral thesis, 2008-12-15)Subsurface reservoir models are typically limited by a lack of spatially accurate geometric data on bedform architecture and geometry, which are key controls on fluid flow. Outcrop analogues have long been utilized as a ... -
Depositional and structural relationships along the basement-Cambrian contact in the Hardangervidda area
(Master thesis, 2016-06-01)The Scandinavian sub-Cambrian peneplain is an important reference surface used in reconstructing the geological evolution from the Neoproterozoic to the present. A detailed study of the geomorphological and structural ... -
Depth‐dependent permeability and heat output at basalt‐hosted hydrothermal systems across mid‐ocean ridge spreading rates
(Journal article; Peer reviewed, 2018)The permeability of the oceanic crust exerts a primary influence on the vigor of hydrothermal circulation at mid‐ocean ridges, but it is a difficult to measure parameter that varies with time, space, and geological setting. ... -
Design of the subsurface observatory at Surtsey volcano, Iceland
(Peer reviewed; Journal article, 2019-06-12)Surtsey, the youngest of the islands of Vestmannaeyjar, is an oceanic volcano created by explosive basaltic eruptions during 1963–1967 off the southern coast of Iceland. The subsurface deposits of the volcano were first ... -
Detailed lithospheric structure of an arc-continent collision beneathTaiwan revealed by joint inversion of seismological and gravity data
(Peer reviewed; Journal article, 2019)The largest compilation of seismological and gravimetry data are combined in a sequential inversion to shed light on unresolved crustal structures in Northern Taiwan and Southernmost Ryukyu area. Our density and seismic ... -
Detaljkartlegging av skredfare i Mobergslia, Os kommune, Hordaland
(Master thesis, 2011)Detaljert kartlegging av lausmassane, med hovudfokus på skredavsetjingar og kartlegging av skredfare er utført i området rundt Mobergslia, sør for Liafjellet i Os kommune, Hordaland. Det er laga eit lausmassekart og eit ... -
Detecting multiscale karst features including hidden caves using microgravimetry in a Caledonian nappe setting: Mefjell massif, Norway.
(Peer reviewed; Journal article, 2018-11-20)Cave passages and karst features form negative density contrasts expressed in gravity field anomalies. We present an interpretation approach for microgravimetry, applicable for challenging geological settings with heterogeneous ... -
Detection of ice core particles via deep neural networks
(Journal article; Peer reviewed, 2023)Insoluble particles in ice cores record signatures of past climate parameters like vegetation dynamics, volcanic activity, and aridity. For some of them, the analytical detection relies on intensive bench microscopy ... -
Detrital zircon provenance of the Bremnes Migmatite Complex on Bømlo, SW Norway
(Master thesis, 2021-09-29)Detrital zircon provenance, geochemistry, and field descriptions from the Bremnes Migmatite Complex provide new insights in the origin and evolution of the Early Ordovician ophiolitic terrane of SW Norway. The Bremnes ... -
Development of extensional growth basins: A field based study, Svalbard, Norway
(Doctoral thesis, 2020-02-27)The growth style and evolution of syn-sedimentary faults influence the architecture of the basin and thus control both the geometries and distribution of sedimentary facies belts. The architecture of sedimentary basin fill ... -
Development of Gilbert-type deltas: sedimentological case studies from the Plio-Pleistocene of Corinth Rift, Greece
(Doctoral thesis, 2014-05-28)Gilbert-type deltas form where a river system debouches into a relatively deep marine or lacustrine basin, whereby the subaqueous delta slope is steep and fully dominated by sediment gravity-transport processes. These ... -
The development of oxygen content in the Greenland Sea from 1993 to 2008. A study of convection depth and deep layer changes.
(Master thesis, 2009-05-25)In previous years the hydrography in the Greenland Sea have been investigated based on temperature and salinity observations along with different transient tracers. In this work annual zonal sections, averaged values of ... -
Diagnostics of seismic time-lapse effects of sandstones based on laboratory data
(Peer reviewed; Journal article, 2014-09)We evaluated a viscoelastic modeling of P- and S-wave velocity dispersion, attenuation, pressure, and fluid effects for a set of siliciclastic rock samples. Our analysis used a published laboratory data set of 63 sandstones ... -
Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia
(Journal article; Peer reviewed, 2023)We describe glaci-lacustrine sediments buried under thick tills in Folldalen, south-east Norway, a site located close to the former centre of the Scandinavian Ice Sheet. Thus, the location implies that the ice sheet had ... -
Dinoflagellate cyst stratigraphy and palaeoenvironment of the "Utsira Sand" in the northern North Sea
(Master thesis, 2014-11-20)Safe CO_2 storage in the Utsira Formation is one of many solutions to climate change mitigation. A major leakage had occurred in the Utsira Formation in 2008, due to water injection in what was believed to be the Utsira ... -
Direct image-to-geometry registration using mobile sensor data
(Peer reviewed; Journal article, 2016)Adding supplementary texture and 2D image-based annotations to 3D surface models is a useful next step for domain specialists to make use of photorealistic products of laser scanning and photogrammetry. This requires a ... -
The discovery of the Younger Dryas, and comments on the current meaning and usage of the term
(Journal article; Peer reviewed, 2021)The Younger Dryas (YD) cold event was discovered in Denmark by Hartz and Mithers in 1904 and the term coined by Hartz in 1912. It was identified as a lacustrine clay bed containing plant macrofossils of an Arctic flora, ... -
Disentangling rock record bias and common-cause from redundancy in the British fossil record
(Peer reviewed; Journal article, 2014-09-04)The fossil record documents the history of life, but the reliability of that record has often been questioned. Spatiotemporal variability in sedimentary rock volume, sampling and research effort especially frustrates ...