GEO 110 Lecture Notes - Lecture 12: Cubic Foot, Regolith, Habitants
24 Dec 2017
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Document Summary
Lecture 12: introduction to water resources: leonardo da vinci was fascinated by the similarities between the organization of rivers on the surface of the earth and the human circulatory system. Outline: surface hydrology, rivers and lakes, drainage basins, aka, watersheds. Distributio(cid:374) of the world"s water upply: 95% oceans, 2. 5% freshwater, 68. 7% glaciers, 30. 1% groundwater, 0. 8% permafrost, 0. 4% surface and atmospheric water, 67. 4% freshwater lakes, 9. 5% atmosphere, 8. 5% other wetlands, 1. 6% rivers, 0. 8% plants and animals. Hydro cycle: five key components: precipitation, runoff, surface and groundwater storage, evaporation/transpiration, condensation. Evaporation and transpiration: two processes change liquid water into vapor that can ascend into the atmosphere, evaporation 190, transpiration 10% Rain and vegetation: rain falls onto vegetation, and then to the ground. Interception is lost in the vegetation: throughfall make it to the ground, stemflow runs down the vegetation, water reaching the ground can, accumulate in depressions, soak into the ground (infiltration, flow across the surface as overland flow.
