Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på forfatter "Lied, Karstein"

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    • Integrated database for rapid mass movements in Norway 

      Jaedicke, Christian; Lied, Karstein; Kronholm, Kalle (Journal article, 2009)
      Rapid gravitational slope mass movements include all kinds of short term relocation of geological material, snow or ice. Traditionally, information about such events is collected separately in different databases covering ...

    • Integrated database for rapid mass movements in Norway 

      Jaedicke, Christian; Lied, Karstein; Juvet, Halvor; Kronholm, Kalle (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2006)
      Rapid mass movements include all kinds of slides in geological material, snow or ice. Traditionally, information about such events is collected separately in different databases covering selected geographical regions and ...

    • Integrated database for rapid mass movements in Norway. 

      Jaedicke, Christian; Lied, Karstein; Juvet, Halvor; Kronholm, Kalle (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2006)
      Rapid mass movements include all kinds of slides in geological material, snow or ice. Traditionally, information about such events is collected separately in different databases covering selected geographical regions and ...

    • Kartlegging av snøskred- og steinsprang ved hjelp av EDB baserte metoder 

      Toppe, Ronald; Lied, Karstein (NGI-rapport;58930-03, Research report, 1984-12-15)
      For å unngå at boligfelt planlegges i skredfarlig terreng er det satt i gang kartlegging av områder utsatt for snøskred- og steinskredfare i Norge. Kartleggingen er basert på topografiske kart i målestokk 1:50.000. Disse ...

    • Kartlegging av snøskred- og steinsprangfare ved hjelp av EDB-baserte metoder 

      Toppe, Ronald; Lied, Karstein (Chapter, 1984)
      For å unngå at boligfelt planlegges i skredfarlig tcrreng er det satt igang kartlegging av områder utsatt for snøskred-og steinsprangfare i Norge. Kartleggingen er basert på topografiske kart og i målestokk l: 15 000. Disse ...

    • Måling av krefter på skredoverbygg 

      McClung, David Michael; Lied, Karstein (NGI-rapport;75413 Notat 1975-09-01, Research report, 1975-09-01)
      Design loads on avalanche galleries are of great importance to know and unfortunately they can be extremely variable depending on conditions. In addition, values are difficult to determine and results of present experimental ...

    • Nye boligområder ofte skredutsatt: Fareområder må registreres før planer fastlegges 

      Lied, Karstein (Journal article, 1981)
      I mange av våre bratte fjellsider, særlig på Vestlandet og i Nord-Norge er skred en reell fare. Ny bebyggelse blir ofte plassert i mer skredutsatte strøk. Dette ble bl.a. konstatert skredvinteren 1978/79. Bygningsloven ...

    • Observations of the dynamic structure of snow avalanches 

      Nishimura, K.; Maeno, N.; Kristensen, Krister; Sandersen, Frode; Norem, Harald; Lied, Karstein (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 ...

    • 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 ...

    • On snow avalanche flow regimes: Inferences from observations and measurements. 

      Gauer, Peter; Issler, Dieter; Lied, Karstein; Kristensen, Krister; Sandersen, Frode (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 ...

    • Optimization and probabilistic calibration of avalanche block models 

      Gauer, Peter; Medina-Cetina, Zenon; Lied, Karstein; Kristensen, Krister (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 ...

    • Overrun length of avalanches overtopping catching dams: Cross-comparison of small-scale laboratory experiments and observations from full-scale avalanches 

      Faug, Thierry; Gauer, Peter; Lied, Karstein; Naaim, Mohamed (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 the need for avalanche protection measures in Iceland 

      Johannesson, Tomas; Lied, Karstein; Margreth, Stefan; Sandersen, Frode (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....

    • Particle simulation of snow avalanche motion 

      Perla, R.; Lied, Karstein; Kristensen, Krister (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 ...

    • Pelefundamentering av kraftmaster og snøskredforbygninger i skrått terreng - Sluttrapport 

      Lied, Karstein (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 ...

    • Probabilistic calibration of avalanche block models. 

      Gauer, Peter; Medina-Cetina, Zenon; Lied, Karstein; Kristensen, Krister (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2008)
      The Norwegian Geotechnical Institute (NGI) has been operating the full-scale avalanche test-site Ryggfonn in western Norway for more than 25 years. During those years, measurements from about three dozen dry-snow avalanches ...

    • Prøvevoll mot snøskred bygget i Stryn 

      Lied, Karstein (Journal article, 1982)
      NGI har bygget en fangvoll mot snøskred i Grasdalen nær skredforskningsstasjonen på Strynefjellet. Hensikten er å undersøke hvilken effekt slike konstruksjoner har som snøskredsikring og spesielt dimensjoneringen av høyden ...

    • Radar measurements of snow avalanche full scale experiment in Ryggfonn. 

      Rammer, Lambert; Kristensen, Krister; Lied, Karstein (NGI Publication;203, Chapter, 1998)
      At the full scale experiment site of NG! in Ryggfonn, avalanche velocities and forces have been measured through 15 years. In April 1997 an Austrian developed INW pulsed Doppler radar was used to measure avalanche velocities ...