FoU og forskningsartikler: Nye registreringer
Viser treff 21-40 av 176
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Metoder for å måle vannføring i umålte felt
(Journal article, 2007)Forvaltning og utnyttelse av vannressursene stiller i dag høye krav til robusthet og pålitelighet når det gjelder metoder for beregning av vannføring i umålte felt. Temaet har internasjonalt fokus, og IAHS har tatt initiativet ... -
Snow simulation and forecasting through all Norway: the SeNorge model
(Research report, 2009)A model has been recently set up (since 2006) that provides the snow conditions, along with other hydrometeorological parameters, for all Norway at 1 km resolution. This model is called “Senorge” (meaning “See Norway”), ... -
Satellite observed SCA and gamma distributed snow in the HBV model
(Research report, 2009)Areas having a seasonal snowpack experience a risk of melt-floods. The magnitude of such a flood is highly dependent on the available water stored in the snow reservoir. Therefore it is of vital importance to estimate the ... -
LOD-tiltak på nedbørsfelt skala; – hva er effekten av regnbed for avløpet i et urbanfelt på Grefsen-Kjelsås i Oslo?
(Journal article, 2020)Vi har testet effekten av LOD tiltak (regnbed) på totalavløpet fra et 0.3 km2 stort nedbørsfelt med ca 500 husstander på Grefsen Kjelsås i Oslo. Ved hjelp av en nyutviklet urbanhydrologisk nedbør-avløpsmodell, DDDUrban, ... -
Twenty-three unsolved problems in hydrology (UPH) – a community perspective
(Journal article, 2019)This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation ... -
A parameter parsimonious approach for catchment scale urban hydrology – Which processes are important?
(Journal article, 2020)Increased urbanization and increased observed precipitation intensity and -frequency due to climate change call for urban hydrological models capable of describing urban flow dynamics in data-scarce areas. A parameter ... -
Modeling the snow depth variability with a high-resolution Lidar data set and nonlinear terrain dependency
(Journal article, 2019)In the mountains of Norway, snow depth (SD) is highly variable due to strong winds and open terrain. To investigate snow conditions on one of Europe's largest mountain plateaus, Hardangervidda, we conducted snow measurement ... -
Fyllingsdammer – nedstrøms plastring og damtå
(NVE Ekstern rapport;2021:17, Report, 2021)The Norwegian regulations for dam safety and the guidelines on embankment dams include requirements for erosion protection of upstream and downstream slopes of embankment dams. Two recent PhD-studies at NTNU have focused ... -
Jord- og flomskred. Klimaanalyse for bruk i skredfarekartlegging
(NVE Ekstern rapport;2021/11, Report, 2021)Prosjektet hadde som mål å undersøke om det finst betre grunnlag for å gjere klimaanalyse i samband med skredfarekartlegging. Hypotesen var at gjennom eit stadig tettare nettverk av nedbørsstasjonar med registrering av ... -
SenDiT: The Sentinel-2 Displacement Toolbox with Application to Glacier Surface Velocities
(Journal article, 2019)Satellite imagery represents a unique opportunity to quantify the spatial and temporal changes of glaciers world-wide. Glacier velocity has been measured from repeat satellite scenes for decades now, yet a range of satellite ... -
Predicting hourly flows at ungauged small rural catchments using a parsimonious hydrological model
(Journal article, 2019)Streamflow data is important for studies of water resources and flood management, but an inherent problem is that many catchments of interest are ungauged. The lack of data is particularly the case for small catchments, ... -
A stochastic event-based approach for flood estimation in catchments with mixed rainfall/snowmelt flood regimes
(Journal article, 2019)The estimation of extreme floods is associated with high uncertainty, in part due to the limited length of streamflow records. Traditionally, flood frequency analysis or event-based model using a single design storm have ... -
Use of a parsimonious rainfall-run-off model for predicting hydrological response in ungauged basins
(Journal article, 2015)A new parameter parsimonious rainfall–run-off model, the Distance Distribution Dynamics (DDD) model, is used to simulate hydrological time series at ungauged sites in the Lygne basin in Norway. The model parameters were ... -
Estimating extreme areal precipitation in Norway from a gridded dataset
(Journal article, 2015)To obtain estimates of extreme areal precipitation in Norway, the Norwegian Meteorological Institute currently applies a statistical method that combines measured point precipitation, empirical growth factors, and areal ... -
Temporal disaggregation of daily temperature and precipitation grid data for Norway
(Journal article, 2013)This paper presents a simple approach for the temporal disaggregation from daily to 3-hourly observed gridded temperature and precipitation (1 × 1 km2) on the national scale. The intended use of the disaggregated 3-hourly ... -
Estimating catchment-scale groundwater dynamics from recession analysis – enhanced constraining of hydrological models
(Journal article, 2016)In this study, we propose a new formulation of subsurface water storage dynamics for use in rainfall–runoff models. Under the assumption of a strong relationship between storage and runoff, the temporal distribution of ... -
seNorge2 daily precipitation, an observational gridded dataset over Norway from 1957 to the present day
(Journal article, 2018)The conventional climate gridded datasets based on observations only are widely used in atmospheric sciences; our focus in this paper is on climate and hydrology. On the Norwegian mainland, seNorge2 provides high-resolution ... -
Bruk av RAMMS::DEBRISFLOW på kjente sørpeskredhendelser
(NVE Ekstern rapport;2021:9, Report, 2021)Det finnes per i dag ingen dynamiske modeller spesifikt utviklet for beregning av bevegelse av sørpeskred. Hypotesen i dette arbeidet har vært at RAMMS::DEBRISFLOW (RDF) versjon 1.7.20, også kan anvendes til beregning av ... -
Flomberegninger i regulerte felt — hvordan vassdragsreguleringer og flomforløp påvirker flomforholdene
(NVE Rapport;2021:21, Report, 2021)Rapporten beskriver hvordan ulike tilnærminger for beregning av flommer i et regulert vassdrag, så som ulike vassdragsreguleringer og flomforløp, påvirker flomforholdene. Det er også utført en litteraturstudie og utarbeidet ... -
FOU 80606 - Identifisering av løsneområder for sørpeskred
(NVE Ekstern rapport;2021:8, Report, 2021)Interessen for sørpeskred startet for alvor på slutten av 70 tallet, og studiene fra Norge og andre land viste at sørpeskred kan utløses og forekomme i et stort spekter av terrengformer. Det er likevel dokumentert få ...