Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på forfatter "Gauer, Peter"
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Determinación de la velocidad de avalanchas de nieve mediante datos sísmicos
Vilajosana, I.; Suriñach, E.; Khazaradze, G.; Gauer, Peter (Chapter, 2006)Seismic instrumentation has proved to be a reliable tool for snow avalanche detection. In this approach, besides the detection skills of our system we pretend to go one step further. We aim to infer a physical parameter ... -
Emerging insights into the dynamics of submarine debris flows
Elverhøi, Anders; Issler, Dieter; De Blasio, Fabio V.; Ilstad, Trygve; Harbitz, Carl Bonnevie; Gauer, Peter (Journal article, 2005)Recent experimental and theoretical work on the dynamics of submarine debris flows is summarized. Hydroplaning was first discovered in laboratory flows and later shown to likely occur in natural debris flows as well. It ... -
Estimates on the reach of the powder part of avalanches
Gauer, Peter (Lecture, 2018)Avalanche observations from Norway, Austria and Switzerland, which distinguish between dense (fluidized) flow and powder part, are analyzed to obtain probability information about the reach of the powder part. The analysis ... -
Evaluation of probabilistic snow avalanche simulation ensembles with Doppler radar observations
Fischer, Jan-Thomas; Fromm, Reinhard; Gauer, Peter; Sovilla, Betty (Journal article, 2013)In recent years snow avalanche simulation software, which is based on depth-averaged models operating in three-dimensional terrain, has gained importance. Simulations are used to plan protection measures. The software ... -
Exploring the significance of the fluidized flow regime for avalanche hazard mapping.
Issler, Dieter; Gauer, Peter (Journal article, 2008)Observational and experimental evidence suggests that it is important to explicitly account for the fluidized flow regime in avalanche hazard mapping due to its high mobility, intermediate density and high velocity. We ... -
Four decades of observations from NGI’s full-scale avalanche test site Ryggfonn—Summary of experimental results
Gauer, Peter; Kristensen, Krister (Journal article, 2016) -
ICG project 2: Vulnerability and risk assessment for geohazards. Case studies: Risk associated with avalanches.
Gauer, Peter (NGI-rapport;20061032-02, Research report, 2007-11-30)This report documents an approach for the probabilistic risk assessment for avalanches. It presents two case studies: 1) A case regarding the risk to a building in an avalanche path: 2) A study concerningtherisk to ... -
Inferences on Mixed Snow Avalanches from Field Observations
Issler, Dieter; Gauer, Peter; Schaer, Mark; Keller, Stefan (Peer reviewed; Journal article, 2019)Observations of the deposits, flow marks, and damages of three mixed-snow avalanches of widely different size were analyzed with regard to flow regimes, velocities, pressures, densities, flow depths, erosion modes, and ... -
The influence of drifting snow on the location of glaciers on western Spitsbergen, Svalbard
Jaedicke, Christian; Gauer, Peter (Journal article, 2005)On western Spitsbergen, Svalbard, the amount of winter precipitation is insufficient to maintain the present-day mass balance of the local glaciers. Additional snow mass must be added to the precipitation to reach the ... -
Looking Beyond the Powder/Dense FlowAvalanche Dichotomy
Faug, Thierry; Turnbull, Barbara; Gauer, Peter (Journal article, 2018-03-04)Köhler et al. (2018, https://doi.org/10.1002/2017JF004375) deploy a high spatial and temporal resolution GEODAR radar system to reveal the inside of snow avalanches over the entire slope. They detect a rich variety of ... -
Maximum frontal speeds, alpha angles and deposit volumes of flowing snow avalanches
McClung, D.M.; Gauer, Peter (Peer reviewed; Journal article, 2018)Approximate maximum frontal speeds from 89 snow avalanches were analyzed to yield probabilistic estimates of maximum speed scaled with path length parameters. In addition to speeds, 88 companion values of runout for the ... -
Numerical modeling of a slushflow event
Gauer, Peter (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2004)Slushflows—flowing mixtures of snow and water—constitute a natural hazard especially in higher latitudes, i.e., Norway, Iceland, or Alaska. The combination of high densities and high mobility can make them to a highly ... -
Numerical modeling of a slushflow event
Gauer, Peter (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2004)Slushflows—flowing mixtures of snow and water—constitute a natural hazard especially in higher latitudes, i.e., Norway, Iceland, or Alaska. The combination of high densities and high mobility can make them to a highly ... -
Numerical modeling of blowing and drifting snow in Alpine terrain.
Gauer, Peter (Journal article, 2001)In mountainous regions, snow transport due to wind significantly influences snow distribution and, as a result, avalanche danger. A physically based numerical two-Iayer model is developed to simulate blowing and drifting ... -
Numerical runout simulation of debris avalanches in the Faroe Islands, North Atlantic Ocean
Dahl, Mads-Peter J; Gauer, Peter; Kalsnes, Bjørn; Mortensen, Lis E.; Jensen, Niels H.; Veihe, Anita (Journal article, 2012-08-31)The Faroe Islands in the North Atlantic Ocean are susceptible to flow-type landslides in coarse-grained highly organic colluvium. Following several hazardous debris avalanche events, research work has been initiated to ... -
Objective comparison of two to three dimensional avalanche model output and field data using the AIMEC approach
Fischer, Jan-Thomas; Fromm, Reinhard; Gauer, Peter; Sovilla, Betty (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 ... -
On avalanche (front) velocity measurements at the Ryggfonn avalanche test site and comparison with observations from other locations
Gauer, Peter (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.
Gauer, Peter; Lied, Karstein; Kristensen, Krister (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 full-scale avalanche measurements at the Ryggfonn test site, Norway.
Gauer, Peter; Issler, Dieter; Lied, Karstein; Kristensen, Krister; Iwe, H.; Lied, Erik; Rammer, L.; Schreiber, H. (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 pulsed Doppler radar measurements of avalanches and their implication to avalanche dynamics.
Gauer, Peter; Kern, Martin; Kristensen, Krister; Lied, Karstein; Rammer, Lambert; Schreiber, Helmut (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 ...