Results 71 to 80 of about 84,412 (233)
People and Nature, EarlyView.Abstract Fires are expanding in frequency and intensity worldwide due to climate change and land‐use transformations. At the same time, fire often plays a regenerative role in ecosystems. Traditional and cultural practices incorporate fire use for landscape management and landscape renewal. In this complex matrix of fire ecologies, digital technologies
Jennifer Gabrys +2 more
wiley +1 more source
Water lubrication mechanism of glacier surges
, 1969 The author reviews and amplifies his theory of glacier surges. This theory is based on the premise that a glacier surge occurs when a water layer at the base of a glacier attains a thickness sufficient to drown the obstacles in the bed that offer the ...
J. Weertman
core +1 more source
Air temperature distribution and energy balance modelling of a debris-covered glacier [PDF]
, 2016 Near-surface air temperature is an important determinant of the surface energy balance of glaciers that is often represented by constant linear temperature gradients in models.
Brock, B.W. +13 more
core +1 more source
Restoring Lateral Connectivity to Anthropogenic Riverscapes: Six Lessons From Stage Zero
River Research and Applications, EarlyView.ABSTRACT Centuries of river modification, particularly straightening and incision, have severely reduced lateral connectivity between rivers and their floodplains. As a result, Stage 0 riverscapes, characterised by high lateral connectivity (e.g., anastomosing or wetland riverscapes), are now rare in anthropogenic landscapes.
Richard J. Mason +8 more
wiley +1 more source
Patterns and mechanisms of repeat drainages of glacier-dammed Dań Zhùr (Donjek) Lake, Yukon
Arctic ScienceDań Zhùr (Donjek) Glacier is a surge-type glacier that undergoes cyclical periods of rapid advance over ∼1–2 years, followed by retreat for ∼10 years. Since the 1990s, the advances have caused the formation of ice-dammed Dań Zhùr Lake, which has filled ...
Moya Painter +4 more
doaj +1 more source
Controls on glacier surging in Svalbard [PDF]
Journal of Glaciology, 1996 AbstractThe geographical distribution of surge-type glaciers worldwide displays a remarkably non-random pattern. Surge-type glaciers tend to be concentrated in certain glacierized areas and to be completely absent in others. This observation suggests that special conditions are required for surges to occur.
Gordon S. Hamilton, Julian A. Dowdeswell
openaire +1 more source
Subglacial drainage processes at a High Arctic polythermal valley glacier [PDF]
, 2005 Dye-tracer experiments undertaken over two summer melt seasons at polythermal John Evans Glacier, Ellesmere Island, Canada, were designed to investigate the character of the subglacial drainage system and its evolution over a melt season. In both summers,
Nienow, Peter W. +5 more
core +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.Temperate fens with only incipient, subtle signs of deterioration can be reliably identified using Sentinel‐2 and aerial imagery, which sensitively detect early productivity‐related structural changes. Abstract Small temperate fens rank among the most endangered habitats in temperate Europe.
Lubomír Tichý +9 more
wiley +1 more source
Glacier surge at Usherbreen, Svalbard [PDF]
Polar Research, 1987 Usherbreen started to surge in 1978, and the front has advanced 1.5 km and covered an area of 4.5 km2. During the first two years the front advanced more than 1 m/d, and the front was still advancing 0.15– 0.20m/d in 1985, seven years after the start. The mean gradient of the lower 7 km decreased from 3.3 grad. to 1.8 grad. during the surge. The volume
openaire +1 more source
A distributed energy-balance melt model of an alpine debris-covered glacier [PDF]
, 2014 Distributed energy-balance melt models have rarely been applied to glaciers with extensive supraglacial debris cover. This paper describes the development of a distributed melt model and its application to the debris-covered Miage glacier, western ...
Kirkbride, M. +23 more
core +1 more source