نتایج جستجو برای: abstracta mountain glacier
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The Gangotri Glacier, at the source of the Ganges River, has fluctuated greatly throughout the late Quaternary in response to climatic oscillations. This has resulted in impressive moraines, paraglacial debris flow fans and terraces along the upper stretches of the Bhagirathi Valley. Cosmogenic radionuclide (CRN) dating of glacial and paraglacial landforms shows that fans, terraces and associat...
Assessments of the state of health of Hindu-Kush–Karakoram– Himalaya glaciers and their contribution to regional hydrology and global sea-level rise suffer from a severe lack of observations1. The globally averaged mass balance of glaciers and ice caps is negative1–3. An anomalous gain of mass has been suggested for the Karakoram glaciers2,4–6, but was not confirmed by recent estimates of mass ...
Climate-related changes in glacierized watersheds are widely documented, stimulating adaptive responses among the 370 million people living in glacier-influenced watersheds as well as aquatic and riparian ecosystems. The situation denotes important interdependencies between science, society, and ecosystems, yet integrative approaches to the study of adaptation to such changes remain scarce in b...
In many ways, sediment transport dynamics in mountain environments differ from those of the lowlands. The high relief and the steep slopes are an obvious feature of mountain areas. The cold climate is another factor controlling runoff and erosional processes, and the distribution of vegetation is also controlled by the prevailing climate. Above the tree line, processes of erosion are more inten...
Resumen. En este artículo describimos nuestro enfoque para la asignación de sintaxis concreta tanto gráfica como textual a Lenguajes Específicos de Dominio (LEDs). Nuestra aproximación consiste en definir un meta-modelo que describe la sintaxis abstracta del LED, a cuyos elementos se puede asignar una visualización gráfica. Para asignarles una sintaxis textual se ha construido un meta-modelo co...
Monitoring alpine glacier change has many practical and scientific benefits, including yielding information on glacier-fed water supplies, glacier-associated natural hazards, and climate variability. This paper describes the design and implementation of a spatio-temporal GIS database for monitoring glacier geometry and geometric change. The temporal component of the glacier data is managed thro...
[1] Geodetic observations show several large, sudden increases in flow speed at Helheim Glacier, one of Greenland’s largest outlet glaciers, during summer, 2007. These step-like accelerations, detected along the length of the glacier, coincide with teleseismically detected glacial earthquakes and major iceberg calving events. No coseismic offset in the position of the glacier surface is observe...
The Tibetan plateau and surrounding mountain ranges contain the largest amount of ice outside the polar region. The Tibetan plateau also contains more than one thousand lakes and is the origin of a large part of the water resources of South and East Asia, the most densely populated regions on earth. Recent studies concluded that the glacial area on the Tibetan plateau and surroundings has decre...
Nine Landsat thematic mapper/enhanced thematic mapper (TM/ETM)+ images from 1998 to 2010 were analyzed to detect variations in the Kuksai Glacier of Mt. Muztagh Ata, western China. The velocities of glacial movement were quantified using the normalized cross-correlation (NCC) method. The surface debris cover of the glacier makes automated glacier outline mapping difficult, but provides useful f...
Abstract. This paper presents hydrometeorological, glaciological and geospatial data from the Peyto Glacier Research Basin (PGRB) in Canadian Rockies. has been of interest to hydrological researchers since 1960s, when it was chosen as one five glacier basins Canada for study mass water balance during International Hydrological Decade (IHD, 1965–1974). Intensive studies observations continued af...
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