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Tag: Runoff

World's surface water: evaporation and runoff
Because much of the world’s surface water is far from concentrations of human settlements, not all of it is readily usable. Some facts concerning global freshwater concentrations: - It is estimated that the freshwater ...
26 Jan 2009 - by Phillippe Rekacewicz (Le Monde diplomatique), February 2006
Suspended sediment discharge
Asia exhibits the largest runoff volumes and, therefore, the highest levels of sediment discharge. Due to their high precipitation, the Oceanic Islands have disproportionately high-suspended sediment loads (Gleick, 1993)...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), 2008
Industrial areas and seasonal zones of oxygen depleted waters
This graphic illustrates the strong link between areas with high densities of industrial activity and zones of seasonally oxygen-depleted waters. There is a strong link between areas with high densities of industrial ac...
26 Jan 2009 - by Phillipe Rekacewicz, (Le Monde diplomatique) February 2008
Seasonal patterns of precipitation and runoff
The infuence of glaciers on seasonal distribution of river fow is strongly dependent on annual temperature and precipitation cycles, and the proportion of the catchment occupied by glacier ice. Figure 4 compares precip...
06 Dec 2010 - by Riccardo Pravettoni
Salzach river discharge, Austrian Alps
Simulated contributions of glacier melt (frn/ice melt) to annual total runoff were calculated between 1 and 4%. In the period 1999–2000, when the glacier mass balance of Goldbergkees and Stubacher Sonnblickkees have been...
06 Dec 2010 - by Riccardo Pravettoni
Invasive alien plant species potential distribution
Alien plant species pose a major threat to South Africa’s native biodiversity. It is estimated that more than 9 000 plant species have been introduced so far. Of these, about 198 species are deemed invasive, covering 10 ...
21 Jun 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
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