A5021295202- Cryospheric studies and observations
- Landslides and related hazards
- Climate change and permafrost
- Hydrology and Watershed Management Studies
- Geology and Paleoclimatology Research
- Winter Sports Injuries and Performance
- Arctic and Antarctic ice dynamics
- Fire effects on ecosystems
- Flood Risk Assessment and Management
- Arctic and Russian Policy Studies
- Evacuation and Crowd Dynamics
- Meteorological Phenomena and Simulations
- Image Processing and 3D Reconstruction
- Atmospheric and Environmental Gas Dynamics
- Disaster Management and Resilience
- Geophysics and Gravity Measurements
- Methane Hydrates and Related Phenomena
- Climate variability and models
- Safety Warnings and Signage
- Environmental Monitoring and Data Management
- Categorization, perception, and language
- Risk Perception and Management
- Research Data Management Practices
- Species Distribution and Climate Change
- Video Surveillance and Tracking Methods
Norwegian Water Resources and Energy Directorate
2005-2024
UiT The Arctic University of Norway
2018-2023
Centre for Arctic Gas Hydrate, Environment and Climate
2022-2023
Norsk Hydro (Norway)
1998-2022
Posten (Norway)
2018
Norwegian Water
1997
Abstract The importance of glaciers in mainland Norway for runoff is reflected the extensive glacier measurement record. Mass balance has been measured 42 glaciers. Length (or front-position) records exist about 60 glaciers, and nearly half these are presently measured. mass-balance front-position data have analyzed with respect to spatial temporal variations. maritime a large annual mass turnover had surplus between 1962 2000. In contrast, continental smaller summer winter balances deficit...
Abstract. Glaciological and geodetic methods provide independent observations of glacier mass balance. The glaciological method measures the surface balance, on a seasonal or annual basis, whereas surface, internal, basal balances, over period years decades. In this paper, we reanalyse 10 glaciers with long-term mass-balance series in Norway. reanalysis includes (i) homogenisation both observation series, (ii) uncertainty assessment, (iii) estimates generic differences including internal...
Abstract. Like many other mountainous countries, Norway has experienced a rapid increase in both recreational winter activities and fatalities avalanche terrain during the past few decades: decade 2008–2017, 64 were recorded Norway. This is 106 % from that of previous decade. In 2013, therefore launched National Avalanche Warning Service (NAWS), which provides warnings to transport preparedness authorities public. Previous studies suggest are used extensively trip planning have relatively...
The mapping and measurement of glaciers their changes are useful in predicting sea‐level regional water supply, studying hazards climate change [ Haeberli et al. , 1998],and the hydropower industry Existing inventories cover only about 67,000 world's estimated 160,000 based on data collected over 50 years or more [e.g., 1998]. available have proven that small ice bodies disappearing at an accelerating rate Antarctic sheet its fringing shelves undergoing unexpected, rapid change. According to...
Snow avalanches are a complex phenomenon and correctly assessing avalanche danger is crucial in order to avoid accidents. To aid the decision-making process, different frameworks (DMFs) have been developed. However, each DMF assesses factors. We identified 44 factors included ten most commonly used DMFs, supplemented by nine regarded as important professionals, resulting 53 classify describe factor's possible strengths, weaknesses limitations. Many shared but there differences when it comes...
Abstract Snow avalanches are a significant natural hazard in Norway. One method to manage the backcountry avalanche is through detailed mapping of terrain. Avalanche terrain can be mapped using variety methods, including Terrain Exposure Scale (ATES); however, manual classification ATES time consuming. This study has developed and compared fully automated algorithm provide for all Our new based on technical model mapping. specific terrain-based thresholds that applied modeling. expands prior...
Natural hazards are often communicated visually using colours and maps. However, users' ability to read understand these products may be hampered by e.g., colour vision deficiency, potentially rendering the less effective or even counter effective. To study effects, we conducted two web-based surveys analysed how improve visual communication of avalanches, floods, landslides, dangerous weather hazards. In survey 1 (n = 79), tested four traffic light palettes, three map legends, patterns used...
Glacier mass balance is a function of climate and may be used as proxy indicator change. However, several obstacles oppose change detection using field observations optical remote sensing techniques at high latitude. To overcome these problems we investigated the capability satellite synthetic aperture radar (SAR) to detect changes in glacier facies. Eight years winter European (ERS) SAR data from Kongsvegen, Svalbard, were analysed. The results suggest that minimum maximum altitude...
In traditional mass-balance measurements one estimates winter snow accumulation by identifying the depth to previous summer’s or ice surface using a probe. This is labor-intensive and unreliable for inhomogeneous summer surfaces. Another method image internal reflection horizons ground-penetrating radar (GPR), which has advantages in speed areal coverage over probing. However, obtain quantitative from GPR images needs convert time scale scale, not straightforward problem. We compare section...
The snowy mountains of the world attract more and backcountry recreationalists. Besides beauty joy, traveling in avalanche terrain can involve risk injury even death. A correct assessment danger following a decision is crucial. This requires thorough evaluation range factors. To aid these decisions several decision-making frameworks (DMF) have been put forward. However, actual use their underlying factors be questioned. We asked 100 experts about familiarity usage DMFs found large...
The all-weather capability makes synthetic aperture radar (SAR) interesting with respect to glaciological studies in remote Arctic areas. aim of this project was investigate how the European Remote Sensing Satellite (ERS) SAR backscatter from certain and geomorphological structures varied time find out at which year a acquisition will give best result when observing features. Five ERS-1 images, one winter four summer, were acquired over northwestern part Svalbard, Norway. Ground measurements...
Snowmelt can be a significant contributor to major floods, and hence updated snow information is very important flood forecasting services. This study assesses whether operational runoff simulations could improved by applying satellite-derived covered area (SCA) from both optical radar sensors. Currently the HBV model used for in Norway, satellite-observed SCA qualitatively but not directly model. Three catchments southern Norway are studied using data 1995 2002. The results show that detect...
In traditional mass-balance measurements one estimates winter snow accumulation by identifying the depth to previous summer’s or ice surface using a probe. This is labor-intensive and unreliable for inhomogeneous summer surfaces. Another method image internal reflection horizons ground-penetrating radar (GPR), which has advantages in speed areal coverage over probing. However, obtain quantitative from GPR images needs convert time scale scale, not straightforward problem. We compare section...
The Arctic glaciers are sensitive to climate change, and glacier mass balance is used as an indicator of change. However, few observations available from the region. Winter ERS-1 SAR images Slakbreen (78degreesN, 16degrees 30'E) on Svalbard were analysed investigate a possible relation between backscatter temporal variations in balance. A winter image acquired 1993 after summer with large ablation was compared following low ablation. Changes one year another difficult detect using data only....
Abstract The first known jökulhlaup from the Blåmannsisen ice cap in northern Norway began on 6 September 2001. It lasted 35 hours and emptied lake Øvre Messingmalmvatn (∼4.0 × 10 7 m 3 ). Before event, drained steadily via a rock spillway into Sweden. water hydropower reservoir Sisovatn, so was financially beneficial to Norway. Glaciological data show evidence of glacier retreat thinning during last four decades. Glacier thickness decreased ablation zone, reducing ice-barrier stability. at...
Outdoor recreation continues to increase in popularity. In Norway, several avalanche fatalities are recorded every year, but the accurate calculation of a fatal accident rate is impossible without knowing how many people exposed. We attempted employ signaling data from telecom network enumerate backcountry travelers terrain. Each event contains information about which coverage area phone connected and timestamp. There no triangulation, making it know whether associated moving or stationary...