Browsing Institutt for geofag by Title
Now showing items 1160-1179 of 3033
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(Master thesis / Masteroppgave, 2013)In situ weathering of the Mesoproterozoic, hornblende- and biotite-rich Rønne granite at Nygård kaolin pit provides a well preserved, Jurassic to Early Cretaceous saprolite section on Bornholm. Fresh Rønne granite could ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)The study area is located in the Central Iberian Zone, a major tectonic unit of the Iberian Massif (Variscan belt). In this region the basement is composed of Cambrian-Ordovician sedimentary and minor volcanic rocks that ...
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The granulite-eclogite facies transition as developed in the Bergen Arcs, with focus on the minerals scapolite and spinelRestricted Access (Master thesis / Masteroppgave, 2015)The Precambrian granulites (T~850°C and p<1.0 GPa) of the Lindås nappe, Bergen Arcs are transformed to Caledonian eclogites (T~670°C and p~1.8 GPa) in shear zones and along fluid pathways. This ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)The origin of linear features in mountain terrain that form distinct vertical steps is generally not obvious and has been discussed to be related to either tectonic faulting or gravitational slope deformation. A strong ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Abstract Future climate projections show a marked increase in Greenland Ice Sheet (GrIS) runoff during the 21 st century, a direct consequence of the Polar Amplification signal. Regional climate models (RCMs) are a widely ...
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(Master thesis / Masteroppgave, 2022)The Greenland Ice Sheet (GrIS) has been losing mass since the 1990s as a direct consequence of rising temperatures. Greenland has been projected to continue to lose mass at an accelerating pace throughout the 21st century, ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Ice marginal lakes are a dynamic component of terrestrial meltwater storage at the margin of the Greenland Ice Sheet. Despite their significance to the sea level budget, local flood hazards and bigeochemical fluxes, there ...
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(Master thesis / Masteroppgave, 2011)In this study plesiosaur limb bones of four specimens from the Late Jurassic of Svalbard have been studied to map gross internal structure and microstructure and compare this to extant marine reptiles and mammals. Two ...
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(Doctoral thesis / Doktoravhandling, 2012)
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(Master thesis / Masteroppgave, 2016)The Svalbard archipelago is subject to winter warm events, where daily mean air temperature exceeds 0°C. These warm events occur when low pressure systems direct air northwards across the Nordic Seas towards the west coast ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)This article assesses how the ground-penetrating radar RIMFAX will image the crater floor at the Mars 2020 landing site, where lithological compositions and stratigraphic relationships are under discussion prior to mission ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)In continuous permafrost regions, pathways for transport of sub-permafrost groundwater to the surface sometimes perforate the frozen ground and result in the formation of a pingo. Explanations offered for the locations of ...
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(Master thesis / Masteroppgave, 2014)The municipal waterworks in Ånes supplies 380 people. The wells are situated about 60 meters west of Landåselva River in a delta at the north end of Lake Randsfjorden. The waterworks has experienced problems with contamination, ...
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(Master thesis / Masteroppgave, 2011)This thesis contains modelling study of groundwater flow in the Chikwawa district, lower Shire Area in the southern regions of Malawi, in order to test out the working hypothesis that deeper groundwater circulation and ...
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Groundwater springs formed during glacial retreat are a large source of methane in the high Arctic (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Permafrost and glaciers in the high Arctic form an impermeable ‘cryospheric cap’ that traps a large reservoir of subsurface methane, preventing it from reaching the atmosphere. Cryospheric vulnerability to climate warming ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Inspired by geological structures formed by magmatic intrusions that deform the Earth's crust, we investigate the elastohydrodynamic growth of a viscoplastic blister under an elastic sheet resting on a prewetted substrate. ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Observations and models agree that the Greenland Ice Sheet (GrIS) surface mass balance (SMB) has decreased since the end of the 1990s due to an increase in meltwater runoff and that this trend will accelerate in the future. ...
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(Master thesis / Masteroppgave, 2007)Late Ordovician-Early Silurian magmatism, probably in a continental arc setting, was responsible for the generation of the Hurry Inlet Granite batholith of Liverpool Land, East Greenland. The emplacement of this batholith ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)This study investigates the use of covariant Lyapunov vectors and their respective angles for detecting transitions between metastable states in dynamical systems, as recently discussed in several atmospheric sciences ...
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(Master thesis / Masteroppgave, 2019)Transform faults are strike-slip faults that accommodate lateral offsets between spreading segments of mid-ocean ridges. Because plates cannot move perpendicular to them, transform faults may exert a control on plate motions ...