Browsing Department of Earth Science by Title
Now showing items 17-36 of 1230
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A detailed field and geochemical investigation of the volcanic sequence in the Grimelid-area: The Solund-Stavfjord Ophiolite Complex
(Master thesis, 2021-12-30)This master thesis focuses on the volcanic sequence of the Solund-Stavfjord Ophiolite Complex (SSOC) in Grimelia, in order to provide more detailed information and a better understanding of the development. The SSOC (443 ... -
A detailed field and geochemical investigation of the volcanic sequence in the Våganes-area: The Solund-Stavfjord Ophiolite Complex
(Master thesis, 2021-06-01)The Solund-Stavfjord Ophiolite Complex (SSOC) is located within the western Norwegian Caledonides and represents a remnant of the youngest phase of oceanic crust formation, dated to Late Ordovician (443 Ma). Detailed field ... -
A high-resolution reconstruction of climate variability at Lagoa Negra Lake Flores, Azores
(Master thesis, 2023-02-07) -
A study of normal fault structure and along-strike variations, based on the northern Moab fault system, Utah.
(Master thesis, 2022-11-07)Fault systems are complex structures where multiple elements generate a network that can deeply impact fluid flow, affecting subsurface hydrocarbon and groundwater reservoirs. However, seismic data from such structures are ... -
Abiotic synthesis of methane and organic compounds in Earth’s lithosphere
(Journal article; Peer reviewed, 2020)Accumulation of molecular hydrogen in geologic systems can create conditions energetically favorable to transform inorganic carbon into methane and other organic compounds. Although hydrocarbons with a potentially abiotic ... -
Abrupt changes in sea ice and dynamics of Dansgaard-Oeschger events
(Doctoral thesis, 2017-12-01)Changes in sea ice are proposed as an important component in Dansgaard-Oeschger events; the abrupt climate change events that occurred repeatedly during the last ice age. Paleoclimatic reconstructions suggest an expansion ... -
Abrupt deglacial changes in the properties of the Atlantic Water entering the Arctic
(Master thesis, 2021-12-15)The Arctic Ocean and Barents Sea are currently experiencing rapid changes, with recent reductions in sea ice being linked to increased heat transport by warm Atlantic Water (AW) flowing into the Arctic Ocean. Knowledge of ... -
Abrupt high-latitude climate events and decoupled seasonal trends during the Eemian
(Peer reviewed; Journal article, 2018-07-20)The Eemian (the Last Interglacial; ca. 129–116 thousand years ago) presents a testbed for assessing environmental responses and climate feedbacks under warmer-than-present boundary conditions. However, climate syntheses ... -
Accretionary history of Lower Ordovician island arc complexes on Bømlo: evidence from detrital zircon dating and geochemical data
(Master thesis, 2017-06-13)The provenance studies of sedimentary sequences associated with island arc complexes on Bømlo within the ophiolitic terrain of SW Norway has demonstrated that the provenance signature of these sedimentary rocks changed ... -
Accuracy of Fault Sealing in the Oseberg South Area
(Master thesis, 2024-03-07) -
Acoustic Propagation Underneath the Arctic Sea-ice
(Doctoral thesis, 2018-10-04)The main objective of this project is to study the effect of sea-ice on underwater acoustic wave propagation. Three main parameters define how acoustic waves react to the presence of seaice: (i) the roughness of the underside ... -
Acoustic waveform inversion for ocean turbulence
(Peer reviewed; Journal article, 2017)The seismic oceanography method is based on extracting and stacking the low-frequency acoustic energy scattered by the ocean heterogeneity. However, a good understanding on how this acoustic wavefield is affected by physical ... -
Adjoint Modeling and Observing System Design in the Subpolar North Atlantic
(Doctoral thesis, 2019-08-30)The near-surface ocean currents of the subpolar North Atlantic transport large amounts of heat from the subtropics to higher latitudes, affecting Arctic sea ice extent, the melting of the Greenland Ice Sheet, and the climate ... -
Aftershock study of the 2019 Ambon earthquake using moment tensor inversion: identification of fault reactivation in northern Banda, Indonesia
(Journal article; Peer reviewed, 2023)On September 26, 2019, an Mw 6.5 earthquake occurred 23 km northeast of Ambon City, Indonesia, followed by numerous aftershock series related to a complex fault network reactivation in the Ambon and Seram region. Using ... -
Aktsomhetskart for jordfallshull i Nordland: en forstudie
(Master thesis, 2019-06-13)Store deler av Nordland utgjør områder hvor karstbergarter er tildekket av kvartære løsmasser. Ved slike forhold kan suffosjonsdoliner og katastrofale jordfallshull utvikles. Jordfallshull er en type doline (lukket ... -
Akustiske bølger i periodiske medier
(Master thesis, 2003) -
Alkaline sill intrusions in sedimentary basins: emplacement of the Mussentuchit Wash Sill in San Rafael Swell, Utah
(Journal article; Peer reviewed, 2022)Sills are important components of magmatic plumbing systems because of their role in magma storage. Previous studies have indirectly investigated sill propagation and architecture by using laboratory experiments, remote ... -
Alps to Apennines zircon roller coaster along the Adria microplate margin
(Peer reviewed; Journal article, 2018-02-09)We have traced the particle path of high-pressure metasedimentary rocks on Elba Island, Northern Apennines, with the help of a U-Pb-Hf detrital zircon study. One quarter of the analysed zircons are surprisingly young, ... -
Alps to Apennines zircon roller coaster along the Adria microplate margin
(Peer reviewed; Journal article, 2018-02-09)We have traced the particle path of high-pressure metasedimentary rocks on Elba Island, Northern Apennines, with the help of a U-Pb-Hf detrital zircon study. One quarter of the analysed zircons are surprisingly young, ...