Zobrazeno 1 - 10
of 21
pro vyhledávání: '"R. S. Purves"'
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 21, Pp 3879-3897 (2021)
Effective and efficient communication of expected avalanche conditions and danger to the public is of great importance, especially where the primary audience of forecasts are recreational, non-expert users. In Europe, avalanche danger is communicated
Externí odkaz:
https://doaj.org/article/c21d178f551349c0b6ec4564faebd4fd
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 18, Pp 2697-2716 (2018)
In the European Alps, the public is provided with regional avalanche forecasts, issued by about 30 forecast centers throughout the winter, covering a spatially contiguous area. A key element in these forecasts is the communication of avalanche dan
Externí odkaz:
https://doaj.org/article/6b07bbf9b935473f8fc756df6a226ada
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 16, Pp 2211-2225 (2016)
Avalanche hazard assessment requires a very precise estimation of the release area, which still depends, to a large extent, on expert judgement of avalanche specialists. Therefore, a new algorithm for automated identification of potential avalanch
Externí odkaz:
https://doaj.org/article/4fc6b58447bf4d0099ad6cfa727b1a4c
Publikováno v:
Earth Surface Dynamics, Vol 4, Iss 1, Pp 103-123 (2016)
In recent years, strong variations in the speed of rock glaciers have been detected, raising questions about their stability under changing climatic conditions. In this study, we present continuous time series of surface velocities over 3 years of si
Externí odkaz:
https://doaj.org/article/d8e94d304cd642b384450aac1bde3ddb
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XL-3/W3, Pp 71-75 (2015)
This paper describes a simple comparison of the distributions of land cover features identified from volunteered data contributed by different social groups – in this case comparing two groups of Geo-Wiki campaigns. Understanding the impacts on ana
Externí odkaz:
https://doaj.org/article/adcbbb3762af4d8c9dbe6251b2c3c344
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol II-3-W5, Pp 311-316 (2015)
Increasing availability of Geo-Social Media (e.g. Facebook, Foursquare and Flickr) has led to the accumulation of large volumes of social media data. These data, especially geotagged ones, contain information about perception of and experiences in va
Externí odkaz:
https://doaj.org/article/44b889ab8d674068b5135baf12becaa7
Publikováno v:
The Cryosphere, Vol 8, Iss 2, Pp 547-569 (2014)
In alpine terrain, the snow-covered winter surface deviates from its underlying summer terrain due to the progressive smoothing caused by snow accumulation. Terrain smoothing is believed to be an important factor in avalanche formation and avalanche
Externí odkaz:
https://doaj.org/article/6c68d63a454e46a099a380a379e6649d
Publikováno v:
Geoscientific Model Development, Vol 6, Iss 4, Pp 1319-1336 (2013)
Model evaluation is often performed at few locations due to the lack of spatially distributed data. Since the quantification of model sensitivities and uncertainties can be performed independently from ground truth measurements, these analyses are su
Externí odkaz:
https://doaj.org/article/05ccc14ce3794ebe9b46cd75073b958b
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 11, Pp 5077-5098 (2012)
As many environmental models rely on simulating the energy balance at the Earth's surface based on parameterized radiative fluxes, knowledge of the inherent model uncertainties is important. In this study we evaluate one parameterization of clear-sky
Externí odkaz:
https://doaj.org/article/63b45c43a035490a8c87be47f7ec5c99
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 12, Iss 1, Pp 241-254 (2012)
The ongoing debate about the effects of changes in the high-mountain cryosphere on rockfalls and rock avalanches suggests a need for more knowledge about characteristics and distribution of recent rock-slope instabilities. This paper investigates 56
Externí odkaz:
https://doaj.org/article/07f1eec06e2d41e3b116f439142e94e9