Blar i Norges Geotekniske Institutt på emneord "Avalanche-RnD"
Viser treff 61-80 av 382
-
Calculation of maximum snow-avalanche run-out distance by use of digital terrain models.
(Journal article, 1989)This paper discusses how maximum snow-avalanche run-out distance may be calculated by a combination of topographic parameters and use of a digital terrain model. Digitized maps are being made for extensive areas of Norway. ... -
Calculation of snow avalanche runout distance.
(Journal article, 1983)Evaluation of the maximum runout distance of snow avalanches is one of the most important problems in avalanche zoning. It is also one of the most difficult and controversial subjects in avalanche research. This is especially ... -
Can the propagation speed of snow avalanches be determined by seismic methods?
(Chapter, 2004)The main question of the given work is whether the propagation speed of snow avalanches can be determined using seismic observations. The significance of having at least an order of magnitude estimate of this basic physical ... -
Can we learn more from the data underlying the statistical a-ß model with respect to the dynamical behavior of avalanches?
(Journal article, 2010)Hazard and risk assessment in avalanche-prone areas involves estimation of runout distances of potential avalanches. Methods for determination of the runout may be divided into two categories: 1) methods based on statistical ... -
Changes in the snow drift pattern caused by a building extension. Investigations through scale modeling and numerical simulations
(Chapter, 2000)Snowdrifts around buildings can cause serious problems when formed on undesirable places. The formation of snowdrifts is highly connected to the wind pattern around the buildings, and the wind pattern is again dependent ... -
Changes of the avalanche cadastre in the Czech part of the Giant Mts.
(NGI Publication;203, Chapter, 1998)Giant Mts. are the highest and the only mountain range of the Czech Republic which features considerable avalanche activity. There are at average 22 avalanches events on 47 avalanche paths in a year. Human colonisation and ... -
Chute experiments on slushflow dynamics.
(Journal article, 2008)Slushflows are gravity driven mass flows consisting of a mixture of snow and water, which exhibit considerable damage potential for endangered areas. An increase in global temperature and winter rain precipitation could ... -
Climate database for avalanche consulting and warning in Norway
(Journal article, 2007)Climate data is an essential tool for the study of weather induced geophysical processes like avalanches. Climate data provides on overview of normal and extreme weather conditions at a given location. This information can ... -
Comments on avalanche flow models based on the concept of random kinetic energy
(Peer reviewed; Journal article, 2017)In a series of papers, Bartelt and co-workers developed novel snow-avalanche models in which random kinetic energy RK (a.k.a. granular temperature) is a key concept. The earliest models were for a single, constant density ... -
Comments on “On a Continuum Model for Avalanche Flow and Its Simplified Variants” by S. S. Grigorian and A. V. Ostroumov
(Others, 2020)This note first summarizes the history of the manuscript “On a Continuum Model for Avalanche Flow and Its Simplified Variants” by Grigorian and Ostroumov—published in this Special Issue—since the early 1990s and explains ... -
Comparing model and full-scale experiments on snow avalanche dynamics
(NGI-rapport;58120-28, Research report, 1992-10-01)The paper is a part of a Japanese - Norwegian collaboration on snow avalanche dynamics. The results of model experiments carried out at the Institute of Low Temperature Science, Sapporo are compared with full-scale ... -
Comparing topographical and dynamical runout models by ideas of nearest neighbour method
(Journal article, 1999)Different avalanche runout models are used to compare the calculated results against observations of 230 real avalanches in Norway. The parameters used in the models are investigated and optimized to get the best fit to ... -
Comparison of avalanche front velocity measurements and implications for avalanche models
(Journal article, 2013)Besides the runout distance of an avalanche information on avalanche intensity along the path is often required for hazard zoning or planning of mitigation measures. The avalanche (front) velocity is a common intensity ... -
Comparison of avalanche front velocity measurements: Supplementary energy considerations
(Journal article, 2013)A series of front velocity measurements were re-analyzed to derive estimates on the mean retarding acceleration of dry-mixed avalanches (i.e. dry-snow avalanches, which were partially fluidized and accompanied by a powder ... -
A comparison of avalanche models with data from dry-snow avalanches at Ryggfonn, Norway
(Chapter, 2005)Twelve well-documented dry-snow avalanches from the instrurnented Ryggfonn path in western Norway were selected for back-ca1culations with several dynamical avalanche models. In each case, the run-out distance, the front ... -
Comparison of snow pressure measurements and theoretical predictions
(NGI-rapport;58110-03, Research report, 1985-02-01)Measurements of snow pressures from the centre section of a 3.4 m high and 15 m long avalanche-defence supporting structure located on a mountain in western Norway are presented. The site has a deep snow cover and an average ... -
Comparison of snow pressure measurements and theoretical predictions
(Journal article, 1984)Measurements of snow creep pressures from the centre section of a 3.4 m high and 15 m long avalanche-defence supporting structure located on a mountain in western Norway are presented. The site has a deep snow cover and ... -
Computational models for dense snow avalanche motion
(NGI-rapport;581250-03, Research report, 1996-04-30)Seventeen various models of dense snow avalanche motion are presented. These include statistical, comparative and energy considering models for runout distance computations as well as dynamic models for avalanche motion ... -
Conceptual model for quantification of snow avalanche return periods
(NGI-rapport;20091808-01-TN, Research report, 2012-12-11)This note is a contribution to the InfraRisk project (Module B) where one of the aims is to suggest an improved standard for hazard mapping. In particular, it is attempted to overcome the deficieney pointed out for *WP Bl ... -
Conclusions from a recent survey of avalanche computational models
(NGI Publication;203, Chapter, 1998)In this paper we summarise a survey report on computational models for snow avalanche motion that was developed within the frame-work of the EU research project SAME (Snow Avalanche Modelling, Mapping and Warning in Europe). ...