Poking around the water supply and sewage treatment systems for Göteborg got me wondering about the constant circulation of water in the world....about how long it takes to pass through our skies, oceans, lakes, and living bodies...Some answers below taken from a UNESCO report: (http://webworld.unesco.org/water/ihp/db/shiklomanov/summary/html/summary.html#2.%20Water%20storage)
Table 1. Periods of water resources renewal on the Earth
World Ocean - 2500 years
Ground water - 1400 years
Polar ice - 9700 years
Mountain glaciers - 1600 years
Ground ice of the permafrost zone - 10,000 years
Lakes - 17 years
Bogs - 5 years
Soil moisture - 1 years
Channel network - 16 days
Atmospheric moisture - 8 days
Biological water - several hours
Carolyn
No comments:
Post a Comment