Browsing Institutt for geofag by Title
Now showing items 950-969 of 1224
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)The late Permian biotic crisis had a major impact on marine and terrestrial environments. Rising CO2 levels following Siberian Trap volcanic activity were likely responsible for expanding marine anoxia and elevated water ...
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(Master thesis / Masteroppgave, 2016)
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(Master thesis / Masteroppgave, 2016)
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(Master thesis / Masteroppgave, 2007)Rainfall induced landslides is one of the most common natural hazard worldwide. Intensive rainfall and rapid snow melting caused the two landslides in Jordalsdalen in Fjærland in Western Norway. Debris flow is a global ...
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(Master thesis / Masteroppgave, 2007)Clouds cover about 70% of the earth. In 1983 the world first satellite program, called International Satellite Cloud Climatology Project (ISCCP), was established. ISCCP use geostationary and polar orbiting satellites to ...
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(Master thesis / Masteroppgave, 2014)Robuste estimater for vannføring avhenger av pålitelige inndata, som temperatur og nedbør. Målstasjoner ligger ofte spredt, dette gjør at lokal temperatur og nedbør må interpoleres fra omkringliggende målestasjoner. Kunnskap ...
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(Master thesis / Masteroppgave, 2018)Mobility of sand by fluidization, so-called sand tectonics, can drive surface movements and thereby have a significant impact on depositional environments. Deformation related to sand mobilization is a typical understudied ...
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(Master thesis / Masteroppgave, 2019)Potential field analysis is known to suffer from the problem of "non-uniqueness" in solutions. Gravity data interpretation is a prime example. Anomalous bodies can be detected from the gravity field, but information regarding ...
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(Master thesis / Masteroppgave, 2019)All countries are affected by natural hazards in different ways. The recently launched Synthetic Aperture Radar (SAR) Sentinel-1 A and B twin satellites provides large amounts of high-resolution radar data due to their, ...
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(Master thesis / Masteroppgave, 2008)Til tross for at isskred fra breer sjelden forekommer, utgjør disse en kontinuerlig fare for menneskeliv og infrastruktur lokalisert i nærområdene. Skred fra bratte breer kan forekomme som en naturlig del av ablasjonsprosessen ...
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(Master thesis / Masteroppgave, 2018)Precipitation patterns and rates change with global warming. These changes can be separately evaluated in fast and slow responses, the combination of the two are called apparent responses. The fast precipitation responses ...
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(Master thesis / Masteroppgave, 2007)Aerosol particles , such as sulfate aerosols, can act as cloud condensation nuclei (CCN). The CCN spectrum and water vapor supply in a cloud determine the cloud droplet number concentration (CDNC) and hence shortwave optical ...
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(Master thesis / Masteroppgave, 2009)Sea surface profile and reflection coefficient estimates are vital input parameters to various seismic data processing applications. The common assumption of a flat sea surface when processing seismic data can lead to ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)[1] Marine cloud brightening through sea spray injection has been proposed as a method of temporarily alleviating some of the impacts of anthropogenic climate change, as part of a set of technologies called geoengineering. ...
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(Doctoral thesis / Doktoravhandling, 2012)This thesis adresses the problem of how to image the time-varying sea surface based on dual sensor marine seismic data. Although flat and stationary sea surface assumptions may suffice during the processing of marine seismic ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)[1] Among proposed mechanisms for counteracting global warming through solar radiation management is the deliberate injection of sea salt acting via marine cloud brightening and the direct effect of sea-salt aerosols. In ...
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(Doctoral thesis / Doktoravhandling, 2008)This dissertation was motivated by the realization that four concepts, which are too simplistic, are widely assumed in the petroleum industry: First, mechanical compaction and associated disequilibrium compaction are ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)A new regional compilation of seamount-like oceanic igneous features (SOIFs) in the NE Atlantic points to three distinct oceanic areas of abundant seamount clusters. Seamounts on oceanic crust dated 54–50 Ma are formed on ...
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(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)Using field surveys in 2013, 2014, and 2016 plus satellite data from the 1999–2015 period, we analyze the seasonal drainage cycle of supraglacial lakes on seven debris-covered glaciers in the central Tien Shan. We characterize ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)Measurements of atmospheric nitrogen oxides NOx (NOx = NO + NO2), peroxyacetyl nitrate (PAN), NOy, and non-methane hydrocarbons (NMHC) were taken at the Greenland Environmental Observatory at Summit (GEOSummit) station, ...