Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på tittel
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Facilitating microplastic quantification through the introduction of a cellulose dissolution step prior to oxidation: Proof-of-concept and demonstration using diverse samples from the Inner Oslofjord, Norway
(Peer reviewed; Journal article, 2020)Identifying and quantifying microplastic in marine samples can be facilitated by removing natural organic matter (NOM). Cellulosic material, like chitin, however, are a type of NOM that is resistant to chemical digestion, ... -
Factual report - Halden research site
(NGI-rapport;20160154-04-R Rev. 1, Report, 2020-01-06)Halden silt site is property of Halden municipality and it is known locally as Rødsparken. As part of the characterization of Halden silt site during NGTS project, two main reports are prepared: 1) a factual report ... -
Factual Report - Permafrost Research Site
(NGI-rapport;20160154-06-R, Report, 2020-01-01)Two benchmark sites are established near Longyearbyen, Svalbard (78°13’N, 15°28’E) for long-term geotechnical testing and evaluation of field investigation methods in perennially frozen soils (i.e. permafrost). These sites, ... -
Factual report - Øysand research site
(NGI-rapport;20160154-08-R, Report, 2020-01-15)As part of the characterization of Øysand Sand site during NGTS project, two main reports are prepared: 1) a factual report (20160154-08-R) and 2) an interpretation report (20160154-09-R) (see figure in the next page). The ... -
Fading positive effect of biochar on crop yield and soil acidity during five growth seasons in an Indonesian Ultisol
(Peer reviewed; Journal article, 2018)Low fertility limits crop production on acidic soils dominating much of the humid tropics. Biochar may be used as a soil enhancer, but little consensus exists on its effect on crop yield. Here we use a controlled, replicated ... -
faSavageHutterFOAM 1.0: depth-integrated simulation of dense snow avalanches on natural terrain with OpenFOAM
(Peer reviewed; Journal article, 2018)Numerical models for dense snow avalanches have become central to hazard zone mapping and mitigation. Several commercial and free applications, which are used on a regular basis, implement such models. In this study we ... -
Fatigue design sensitivities of large monopile offshore wind turbines
(Peer reviewed; Journal article, 2022) -
Fatigue sensitivity to foundation modelling in different operational states for the DTU 10MW monopile-based offshore wind turbine
(Peer reviewed; Journal article, 2019)The importance of foundation modelling for the support-structure fatigue damage estimation of a 10 MW monopile based offshore wind turbine is investigated in different operational states and wind-wave misalignment conditions. ... -
FE simulation of steady state wave motion in solids combined with a PML approach
(Peer reviewed; Journal article, 2017)This study presents a finite element (FE) framework for simulation of steady state wave motion, combined with a so-called PML approach. The steady state wave motion of current interest are not only time-harmonic load but ... -
Feltarbeid snøradar
(NGI-rapport;20180070-01-TN, Research report, 2018-11-13)GBV-prosjektet 20180070 "snøegenskaper fra dronebaserte radarmålinger" er et delmål å innhente feltdata med GPR, både fra bakken og i luft. Radardata skal gi informasjon om snødybde, lagdeling i snø og snøegenskaper. Det ... -
Field and Laboratory Test Results from NGTS soft clay site – Onsøy
(NGI-rapport;20160154-10-R, Report, 2019-12-02)In 2017, the Norwegian GeoTest Sites (NGTS) project established five research sites, one of which is the new Onsøy soft clay site located close to Fredrikstad city. This report contains all results from field and laboratory ... -
Field experiments at three sites to investigate the effects of age on steel piles driven in sand
(Peer reviewed; Journal article, 2019)This paper investigates the influences that steel type, in-situ soil properties, water table depth, pile diameter, roughness and driving procedures have on the ageing behaviour of piles driven in sand. Tension tests have ... -
Field measurements of sintering after fracture of snowpack weak layers
(Journal article, 2006)This research documents two cases where field workers unintentionally fractured a snowpack weak layer, but no avalanche released. Measurements from before and after the fractures provide unique data sets on the temporal ... -
Field Survey of the 2017 Rigopiano Avalanche
(NGI-rapport;20170131-02-TN, Research report, 2019-12-26)In the evening of January 18, 2017, a large snow avalanche descended from the east flank of Monte Siella in the municipality of Farindola in the Abruzzo region of Italy. It completely destroyed the Hotel Rigopiano and ... -
Field test of UAS to support avalanche monitoring
(Statens vegvesens rapporter;873, Report, 2022-11-08)I mars/april 2022 gjennomførte Statens vegvesen, Norges geotekniske institutt og SINTEF en felttest med UAS med ulike instrumenter på forskningsstasjonen Fonnbu i Stryn. Formålet med testen var å evaluere bruken av ... -
Field verification tests of the newly developed flow cone tool—In-situ measurements of hydraulic soil properties
(Peer reviewed; Journal article, 2019)Hydraulic soil properties, and in particular the hydraulic conductivity, is important in a number of geotechnical design cases. However, attention is often drawn towards the method of analysis rather than the quality and ... -
Finite element modeling of snow-pack lying on a slope, considering snow as isotropic compressible viscoplastic media
(NGI Publication;203, Chapter, 1998)A simple extension of the von Mises plasticity is proposed in which the equivalent stress is defined as a function of deviatoric and hydrostatic stresses. Non-linearity is accounted by extending NortonHoff equation for ... -
First geophysical investigations to study a fragile Pomor cultural heritage site at Russekeila – Kapp Linné), Svalbard
(Peer reviewed; Journal article, 2023)With climate warming, the cultural heritage sites of the Arctic are in great danger. Extensive research is needed to study such sites. The archaeological site at Russekeila – Kapp Linné, Svalbard was selected for the survey ...