ERTH 2415 Lecture Notes - Lecture 19: Water Cycle, Natural Disaster, Volcanic Gas
3 Dec 2015
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Document Summary
Takeaways: be able to summarize the different processes of the hydrologic cycle, know which factors favor runoff over infiltration, understand how streams adapt to excess water, describe the different flood styles and flood control structures. Total volume of water on earth = 1. 36 billion km3: 0. 0001% in rivers and streams. Hydrologic cycle describes the constant exchange of water between oceans, atmosphere and continents: energy derived from the sun, water is a key factor in several geological processes. Change in clay behavior, dissolution of limestone to form. Processes involved in the hydrologic cycle sinkholes, etc: evaporation takes liquid water and turns it into water vapour and precipitation takes the water vapour and converts it to liquid water again. Need energy to go from liquid to gas (evaporation) Release energy in form of latent heat to go from gas to liquid (precipitation: runof water running across the surface and infiltration ground acts like big sponge and water soaks in, transpiration.
