Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på tittel
Viser treff 772-791 av 1234
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Operational use of a snowpack model for the avalanche warning service in Switzerland : model development and first experiences
(NGI Publication;203, Chapter, 1998)The national Swiss avalanche warning service must provide high quality avalanche danger forecasts with an increasing spatial resolution. For this purpose, forecasters require objective tools to judge local and regional ... -
Oppdatert tiltaksplan for forurenset sjøbunn utenfor Elkem Carbon, Kristiansand
(NIVA-rapport, Research report, 2021)Denne rapporten er en oppdatering av NIVA-rapport 7276-2018 «Tiltaksplan for forurenset sjøbunn utenfor Elkem Carbon, Kristiansand» (Olsen og medarb. 2018). Basert på nye analyser og modellering er det presentert utforming ... -
Opportunity of detailing avalanche forecasts
(NGI Publication;203, Chapter, 1998)The national Swiss avalanche warning service must provide high quality avalanche danger forecasts with an increasing spatial resolution. For this purpose, forecasters require objective tools to judge local and regional ... -
Optimization and probabilistic calibration of avalanche block models
(Journal article, 2009)The Norwegian Geotechnical Institute (NGI) has been performing full-scale avalanche tests at Ryggfonn in western Norway for more than 30 years. During those years, measurements from about three dozen dry-snow avalanches ... -
Organic Content and Maturation Effects on Elastic Properties of Source Rock Shales in the Central North Sea
(Peer reviewed; Journal article, 2019)We investigate the effects of organic content and maturation on the elastic properties of source rock shales, mainly through integration of a well log database from the Central North Sea and associated geochemical data. ... -
Organic-rich shale caprock properties of potential CO2 storage sites in the northern North Sea, offshore Norway
(Peer reviewed; Journal article, 2020)Assessment of the geomechanical properties of organic-rich shale caprocks is critical for a successful CO2 storage into a saline aquifer. In this study, we investigated the geochemical properties of the organic-rich shale ... -
Outline of a Simple Model of Mixed Snow Avalanches
(NGI-Rapport;20200017‐10‐TN, Research report, 2023-08-24)This Note discusses a quasi-three-dimensional model of mixed snow avalanches that could replace the code MoT-Voellmy in NAKSIN. As a starting point, the two-layer model by Eglit is slightly simplified and extended from a ... -
Overrun length of avalanches overtopping catching dams: Cross-comparison of small-scale laboratory experiments and observations from full-scale avalanches
(Journal article, 2008)Results from small-scale and full-scale experiments on avalanche–dam interactions are presented and compared. These experiments were analyzed with respect to the overrun length (i.e., the distance that the avalanche traveled ... -
An overview of avalanche forecasting models and methods
(NGI Publication;203, Chapter, 1998)This overview resumes first the historical development of avalanche forecasting in different countries of the world. It yields the most basic definitions like "avalanche danger" and presents the major problems of avalanche ... -
An overview of natural hazard zoning with special reference to avalanches
(NGI Publication;203, Chapter, 1998)Natural hazards are increasingly a limiting factor in mountainous countries in connection with the growing population and economical development. People become more and more estranged to environmental conditions and are ... -
Overview of soft ground TBM performance
(Chapter, 2023) -
An overview of the need for avalanche protection measures in Iceland
(Iceland. Ministry for the Environment;VI-R96004-UR03, Report, 1996)The present report is prepared by the Icelandic Meteorological Office for the Icelandic Ministry for thc Environment and Iocal authorities in towns threatened by avalanches.... -
PAH i forurenset sediment: Utredning av egnethet av PAHkomponenter/ grupperinger for vurdering av tiltaksbehov
(Research report, 2015)I Norge er det utarbeidet klassegrenser for til sammen 16 PAH-forbindelser i sediment og vann. Grenseverdiene baserer seg på kunnskap om toksisitet av de ulike stoffene og hva som er akseptabel eksponering for miljøet. I ... -
PANDALP : a new penetrometer for snow investigation
(NGI Publication;203, Chapter, 1998)This paper presents a new tool for snow investigation, issued from a portable dynamic penetrometer Panda with variable energy for soil investigation. After a brief presentation of this apparatus, a comparable study between ... -
Paper product production identified as the main source of per- and polyfluoroalkyl substances (PFAS) in a Norwegian lake: Source and historic emission tracking
(Peer reviewed; Journal article, 2020)The entirety of the sediment bed in lake Tyrifjorden, Norway, is contaminated by per- and polyfluoroalkyl substances (PFAS). A factory producing paper products and a fire station were investigated as possible sources. Fire ... -
Parameterization of a numerical 2-D debris flow model with entrainment: a case study of the Faucon catchment, Southern French Alps
(Journal article, 2012)The occurrence of debris flows has been recorded for more than a century in the European Alps, accounting for the risk to settlements and other human infrastructure that have led to death, building damage and traffic ... -
Particle simulation of snow avalanche motion
(Journal article, 1984)The continuum model of a snow avalanche is abandoned, and instead an avalanche is modeled as a collection of particles that move randomly and independently subject to gravity and resistive forces which have a random ... -
Peatland Volume Mapping over Resistive Substrates with Airborne Electromagnetic Technology
(Peer reviewed; Journal article, 2019)Despite the importance of peatlands as carbon reservoirs, a reliable methodology for the detection of peat volumes at regional scale is still missing. In this study we explore for the first time the use of Airborne ... -
Pelefundamentering av kraftmaster og snøskredforbygninger i skrått terreng - Sluttrapport
(Research report, 1993-02-03)Prosjektet har gått ut på å undersøke muligheten av bruk av peler for å fundamentere snøskredforbygninger, kraftmaster oglignende konstruksjoner på løsmasser i bratt terreng. Siktemålet har først og fremst vært å gjennomføre ... -
Penetration and retrieval forces during sampling in a very soft clay
(Peer reviewed; Journal article, 2021)