Browsing Institutt for geofag by Title
Now showing items 784-803 of 3031
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)Hydration of a nominally dry rock can cause expansion of the solid volume, resulting in reaction‐induced fracturing and an associated increase in the porosity and permeability of the rock. We study the effect of confinement ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)In characterizing subsurface reservoirs for CO2 storage, the geological heterogeneity distribution is of importance with respect to the injectivity and migration paths. The object of this study is a saline aquifer of ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Abstract. In continuous permafrost lowlands, thawing of ice-rich deposits and melting of massive ground ice lead to abrupt landscape changes called thermokarst, which have widespread consequences on the thermal, hydrological, ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Shrub expansion in high latitudes is a widely observed response to climate change. Extensive evidence has shown that shrub expansion can lead to positive feedbacks to the regional climate. In this study we evaluate the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Relationship between different geomechanical and acoustic properties measured from seven laboratory tested unconsolidated natural sands with different mineralogical compositions and textures were presented. The samples ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)In-cloud icing can cause damage to infrastructure and is challenging to forecast due to lack of a good representation of supercooled liquid water (SLW) in numerical weather prediction (NWP) models. We validate the new ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Ice aprons (IAs) are part of the critical components of the Alpine cryosphere. As a result of the changing climate over the past few decades, deglaciation has resulted in a surface decrease of IAs, which has not yet been ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)Abstract. The orientation and tectonic regime of the observed crustal/lithospheric stress field contribute to our knowledge of different deformation processes occurring within the Earth's crust and lithosphere. In this ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Many problems in geodynamic modelling result in a non-linear Stokes problem in which the viscosity depends on the strain rate and pressure (in addition to other variables). After discretization, the resulting non-linear ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)We present an efficient implementation of the method for sampling spatial realisations of a 3-D random fields with given power spectrum. The method allows for a multi-scale resolution and approaches well for parallel ...
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(Master thesis / Hovedoppgave, 2004)Abstract This thesis is written as a part of the Cand. Scient. degree at the Institute for Geosciences at the University of Oslo. Traditionally, age determinations of late Cretaceous chalks in the Central Graben in the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)SUMMARY The microseismic events can often be characterized by a complex non-double couple source mechanism. Recent laboratory studies recording the acoustic emission during rock deformation help connecting the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)SUMMARY We consider marine controlled source electromagnetic (CSEM) data and demonstrate that a typical CSEM survey is associated with significant data redundancy. Thus, it should be possible to obtain a high-quality ...
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(Master thesis / Masteroppgave, 2009)Svalbard, ei øygruppe i Arktis, vert påverka både av langtransportert og lokal forureining. I denne oppgåva har konsentrasjonar av elementært karbon (EC) i snøen og effekten det har på albedo blitt undersøkt. Eit overslag ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)[1] Black carbon (BC) and other light-absorbing particles deposited on snow and ice are known to perturb the surface radiative balance. There are few published observations of the concentration of these particles in the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Optical satellite products are available at different processing levels. Of these products, terrain corrected (i.e., orthorectified) products are the ones mostly used for glacier displacement estimation. For terrain ...
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(Doctoral thesis / Doktoravhandling, 2010)This thesis uses ground-based, airborne and spaceborne elevation measurements to estimate elevation change and mass balance of glaciers and ice caps on the Svalbard archipelago in the Norwegian Arctic. Remote sensing data ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Greenlandic glaciers distinct from the ice sheet make up 12% of the global glacierized area and store about 10% of the global glacier ice volume (Farinotti et al., 2019). However, knowledge about recent climate change-induced ...
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(Master thesis / Masteroppgave, 2005)Oppgaven presenterer et klassifiseringssystem for inndeling av elvelandskapstyper langs vassdrag, og er utviklet for at det skal kunne brukes på ulike typer vassdrag. Antall elvelandskapstyper kan variere etter representativitet ...
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(Master thesis / Masteroppgave, 2005)Hovudmålet med oppgåva har vore å lage ein metode for å klassifisere elvelandskap. Elvelandskap er definert som planmønster saman med naturtypen på elvebreidda. Hovudverktøyet skal vere M711-kartserien, og støtteverktøy ...