Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på forfatter "Hestnes, Erik"
-
Forecasting the fatal Longyearbyen avalanche. Possibilities and challenges
Jaedicke, Christian; Hestnes, Erik; Bakkehøi, Steinar; Mørk, Torgeir; Brattlien, Kjetil (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2016)One of the main questions after the fatal avalanche in Longyearbyen in December 2015, where two persons perished and eleven houses were destroyed, was whether an active avalanche warning system would have identified the ... -
The general structure analysis of avalanche (mudflow) risk assessment
Andreev, Yuri B. (NGI Publication;203, Chapter, 1998)The basic structure of risk assessment is studied. The general form of the assessment formula consists of three components - temporal, spatial and anthropogenic ones. The role and contribution of these components are ... -
Geomorphologic and geobotanical features of slushflows (Khibiny mountains instance)
Seliverstov, Yuri G.; Glazovskaya, Tatiana G. (NGI Publication;203, Chapter, 1998)The research area includes the Kolyma riverhead with tributaries. For this territory the extreme continental climate with very frost winters is common. The duration of snow cover is 200-230 days. The domination of low ... -
Global warning reduces the consequences of slushflows
Hestnes, Erik; Bakkehøi, Steinar; Jaedicke, Christian (Chapter, 2017)Most recentpublicationson natural hazards, if they mention slushflows at all, state that their impact onmankind will increase. However, milder weather, shorter winters, less snow and rise of the snowline will mainly shift ... -
Global warning reduces the consequences of snow-related hazards
Hestnes, Erik; Jaedicke, Christian (Lecture, 2018)Most recent publications dealing with consequences related to avalanches and slushflows state that their impact on mankind will increase. That is a highly debatable statement. Milder weather, shorter winters, less snow and ... -
Icelandic avalanche run out models compared with topographical models used in other countries
Jóhannesson, Tómas (NGI Publication;203, Chapter, 1998)A statistical topographical model for the computation of runout for snow avalanches in Iceland has been derived from a recently assembled data sel of long Icelandic snow avalanches. The avalanches are from hills above towns ... -
Impact of rapid mass movement and drifting snow on the infrastructure and development of Longyearbyen, Svalbard
Hestnes, Erik (Lecture, 2000)The thermal regime and hydrological conditions in arctic regions are a threat and a challenge to human activity. In the Longyearbyen area, Svalbard, snow avalanches, slushflows, debris flows , creep and drifting snow ... -
Long-term forecasting of changes of snowiness and avalanche activity in the world due to global warming
Glazovskaya, T.G.; Seliverstov, Yu. G. (NGI Publication;203, Chapter, 1998)The technique of definition of depth of the snow cover, number of days with the snow cover, number of days with intensive snowfalls, duration of avalanche prone period by the standard meteorological data (precipitation and ... -
Longyearbyen, Svalbard - Vulnerability and risk management of an arctic settlement under changing climate - a challenge to authorities and experts
Hestnes, Erik; Bakkehøi, Steinar; Jaedicke, Christian (The International Snow Science Workshop (ISSW) Proceedings;, Chapter, 2016)Longyearbyen, the administrative centre of the Svalbard archipelago, is facing most types of natural hazards under a changing Arctic climate. The catastrophic avalanche in December 2015 led NGI to review our professional ... -
Mathematical modeling of dense avalanches
Eglit, Margarita (NGI Publication;203, Chapter, 1998)The paper presents a brief overview of mathematical models for dense avalanches that were developed by researchers of Moscow State University. Examples of calculations for real avalanches in Caucasus and Khibiny Mountains ... -
The meteorological condition for larger avalanches at Senjojiki Bowl in Japanese Central Alps
Nitta, Ryuzo; Harada, Yusuke (NGI Publication;203, Chapter, 1998)The Senjojiki Bowl has a typical avalanche terrain consisting of8 avalanche tracks. During the last 25 years 16 alpinists and ropeway workers in total have been killed by avalanches. Since no reliable avalanche warning is ... -
Models for powder snow avalanches : comparison of two approaches
Eglit, Margarita E.; Revol, Philippe (NGI Publication;203, Chapter, 1998)Two models are considered in this paper: one was proposed in Kulikovskiy and Sveshnikova (1977) and is referred here as KS-model, the second was described in Beghin and Brugnot (1983), and is referred here as BB-mode!. ... -
Norwegian demands on avalanche safety - legislation, quality policy and judicial practice
Hestnes, Erik (Lecture, 1991)The Building and Planning Act and the Working Environment Act both have demands concerning avalanche safety. The legal demands concerning avalanche safety were first established in the Building Act of 1924. The act was put ... -
Observations on water level fluctuations in snow due to rain and snowmelt
Hestnes, Erik; Bakkehøi, Steinar (Chapter, 1996)Meteorological parameters, snowpack conditions and water level fluctuations in snowpack due to rain and snowmelt, have been registered during 5 winters at two slushflow sites in Rana, North Norway. A noticeable rise of ... -
On avalanche run-up heights on deflecting dams: Centre of mass computations compared to observations.
Domaas, Ulrik; Harbitz, Carl Bonnevie (NGI Publication;203, Chapter, 1998)This article reports on the observed run-up heights of avalanches in terrain formations that act as "natural deflecting dams" with oblique angle of incidence. To compensate for the deficiencies of today's methods, the ... -
Operational use of a snowpack model for the avalanche warning service in Switzerland : model development and first experiences
Lehning, Michael; Bartelt, Perry; Brown, Bob (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 ... -
Opportunity of detailing avalanche forecasts
Isaev, A. A. (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 ... -
An overview of avalanche forecasting models and methods
Föhn, Paul M.B. (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
Hopf, Josef (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 ... -
PANDALP : a new penetrometer for snow investigation
Burlet, J. L.; Daudon, D (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 ...