نتایج جستجو برای: refreezing

تعداد نتایج: 178  

Journal: :آینده پژوهی مدیریت 0
رضا نجف بیگی ندارد

today, innovation and change have been recognized as a necessity in organization, especially in manufacturing organizations of industrial societies. but in most developing countries, the role and importance of this subject has not yet been fully realized. roots of change management, certain concepts and studies done in innovation and change be investigated and analyzed. schools of individual pe...

2017
B Noël W J van de Berg S Lhermitte B Wouters H Machguth I Howat M Citterio G Moholdt J T M Lenaerts M R van den Broeke

Melting of the Greenland ice sheet (GrIS) and its peripheral glaciers and ice caps (GICs) contributes about 43% to contemporary sea level rise. While patterns of GrIS mass loss are well studied, the spatial and temporal evolution of GICs mass loss and the acting processes have remained unclear. Here we use a novel, 1 km surface mass balance product, evaluated against in situ and remote sensing ...

2003
David R. Marchant James W. Head

Introduction: Basal-ice and surface-ice temperatures are key parameters governing the style of glacial erosion and deposition. Temperate glaciers contain basal ice at the pressure-melting point (wet-based) and commonly exhibit extensive areas of surface melting. Such conditions foster basal plucking and abrasion, as well as deposition of thick matrix-supported drift sheets, moraines, and glacio...

2016
Bryn Hubbard Adrian Luckman David W Ashmore Suzanne Bevan Bernd Kulessa Peter Kuipers Munneke Morgane Philippe Daniela Jansen Adam Booth Heidi Sevestre Jean-Louis Tison Martin O'Leary Ian Rutt

Surface melt ponds form intermittently on several Antarctic ice shelves. Although implicated in ice-shelf break up, the consequences of such ponding for ice formation and ice-shelf structure have not been evaluated. Here we report the discovery of a massive subsurface ice layer, at least 16 km across, several kilometres long and tens of metres deep, located in an area of intense melting and int...

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