Browsing Norwegian Geotechnical Institute (NGI) Digital Archive by Title
Now showing items 740-759 of 1222
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Objective comparison of two to three dimensional avalanche model output and field data using the AIMEC approach
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2012)In recent years two to three dimensional avalanche simulation tools have gained importance to estimate the hazard. The models are optimized to determine run out distances of avalanches. However, technically dynamic models ... -
Observations of preferential summer melt of Arctic sea-ice ridge keels from repeated multibeam sonar surveys
(Peer reviewed; Journal article, 2023)Sea-ice ridges constitute a large fraction of the total Arctic sea-ice area (up to 40 %–50 %); nevertheless, they are the least studied part of the ice pack. Here we investigate sea-ice melt rates using rare, repeated ... -
Observations of the dynamic structure of snow avalanches
(Journal article, 1993)During two winters, 1990–92, the dynamic structures of snow avalanches were studied in western Norway. Artificially released wet-snow avalanches ran down the avalanche chute and stopped in front of the retaining dam. Running ... -
Observations on water level fluctuations in snow due to rain and snowmelt
(Chapter, 1996)Meteorological parameters, snowpack conditions and water level fluctuations in snowpack due to rain and snowmelt, have been registered during 5 winters at two slushflow sites in Rana, North Norway. A noticeable rise of ... -
OC6 Phase II: Integration and verification of a new soil–structure interaction model for offshore wind design
(Peer reviewed; Journal article, 2021) -
Occurrence and sorption behaviour of bisphenols and benzophenone UV-filters in e-waste plastic and vehicle fluff
(Peer reviewed; Journal article, 2022) -
Occurrence and sorption behaviour of bisphenols and benzophenone UV-filters in e-waste plastic and vehicle fluff
(Peer reviewed; Journal article, 2021) -
Ocean-Ionosphere Disturbances Due To the 15 January 2022 Hunga-Tonga Hunga-Ha'apai Eruption
(Peer reviewed; Journal article, 2023) -
Offshore Wind Turbine Foundations State of the Art
(Chapter, 2019)The huge growth and intense development in the European offshore wind power sector over the last decade have created significant achievements within the wind turbine foundation technology. The state of the art focusing on ... -
On avalanche (front) velocity measurements at the Ryggfonn avalanche test site and comparison with observations from other locations
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2012)Besides the runout distance of an avalanche, information on avalanche intensity along the path are often required for hazard zoning or planning of mitigation measures. The avalanche (front) velocity is a common measure as ... -
On avalanche measurements at the Norwegian full-scale test-site Ryggfonn.
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2008)Avalanche measurements and observations, which were carried out at the Ryggfonn test-site, Norway, on 16 April 2005, are analyzed. The data include pulsed Doppler radar measurements, impact pressure readings from load cells ... -
On avalanche run-up heights on deflecting dams: Centre of mass computations compared to observations.
(NGI Publication;203, Chapter, 1998)This article reports on the observed run-up heights of avalanches in terrain formations that act as "natural deflecting dams" with oblique angle of incidence. To compensate for the deficiencies of today's methods, the ... -
On Empirical Correlations for Normalised Shear Strengths from Fall Cone and Direct Simple Shear Tests in Soft Swedish Clays
(Peer reviewed; Journal article, 2021) -
On full-scale avalanche measurements at the Ryggfonn test site, Norway.
(Journal article, 2007)Avalanche measurements carried out at the Ryggfonn test site, Norway, during several winter seasons are analyzed with emphasis on recognizing different flow regimes and estimating flow densities. Measurements include impact ... -
On probability analysis in snow avalanche hazard zoning
(Journal article, 2001)The reduced societal acceptance of living in regions exposed to snow avalanches, and the increased economic consequences when houses are located within a hazard zone, highlight the uncertainty concerning avalanche run-out ... -
On pulsed Doppler radar measurements of avalanches and their implication to avalanche dynamics.
(Journal article, 2007)Pulsed Doppler radar measurements from several avalanche releases are analyzed to gain an in-depth understanding of avalanche dynamics. A pulsed Doppler radar emits short pulses and samples the echo in distinct time ... -
On snow avalanche flow regimes: Inferences from observations and measurements.
(The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2008)Mixed dry-snow avalanches are commonly thought to consist of a dense core and a dilute suspension layer, even though observations and measurements from Canada and Russia have long indicated the presence of an intermediate-density ... -
On the characteristics of landslide tsunamis
(Journal article, 2015)This review presents modelling techniques and processes that govern landslide tsunami generation, with emphasis on tsunamis induced by fully submerged landslides. The analysis focuses on a set of representative examples ... -
On the computation of parameters that model snow avalanche motion
(Journal article, 1981)This paper explores the computational problem of finding suitable numbers to use in a twoparameter model of snow avalanche dynamics. The two parameters are friction, y, and a ratio of avalanche mass to drag, MID. Given a ... -
On the Effect of Shield Friction in Hard Rock TBM Excavation
(Peer reviewed; Journal article, 2023)