000011612 001__ 11612
000011612 037__ $$a6259
000011612 041__ $$aEnglish
000011612 100__ $$aWeingartner, R.
000011612 100__ $$aViviroli, D.
000011612 245__ $$aThe hydrological significance of mountains: From regional to global scale
000011612 260__ $$c2004
000011612 260__ $$b
000011612 490__ $$aArticle
000011612 507__ $$aMFOLL
000011612 520__ $$a<span class="pb_abstract">Mountain regions supply a large share of the world&rsquo;s population with fresh water. Quantification of the hydrological significance of mountains, however, is subject to great uncertainty. Instead of focusing on global averages in advance, the present analysis follows a catchment-based approach using discharge data provided by the Global Runoff Data Centre (GRDC). The River Rhine originating in the European Alps is chosen as a first study area, revealing the hydrological relationship between mountainous and lowland regions in a well-documented area. Following the findings from this analysis, different aspects of runoff characteristics for a total of 22 case-study river basins world-wide have been investigated and compared, for a global view. The view has been extended through aspects of climate and human use of mountain runoff. The particular hydrological characteristics of mountain areas are characterised by disproportionately large discharges. In humid areas, mountains supply up to 20&ndash;50% of total discharge while in arid areas, mountains contribute from 50&ndash;90% of total discharge, with extremes of over 95%. The overall assessment of the hydrological significance of mountain areas reveals that the world&rsquo;s major "water towers" are found in arid or semi-arid zones where they provide essential fresh water for a significant proportion of a quickly growing global population. 
000011612 653__ $$aAlps
000011612 653__ $$aGermany
000011612 653__ $$ahydrology
000011612 653__ $$arivers
000011612 653__ $$asustainable
000011612 653__ $$awater
000011612 653__ $$awater resources
000011612 650__ $$aNatural resource management
000011612 650__ $$aWater management
000011612 691__ $$aNatural resource management
000011612 691__ $$aWater management
000011612 773__ $$pHydrology and Earth System Sciences, 8, 1017-1030, 2004: www.hydrol-earth-syst-sci.net/8/1017/2004/
000011612 8564_ $$uhttp://lib.icimod.org/record/11612/files/6259.pdf
000011612 980__ $$aARTICLE