JEG100H1 Chapter Notes - Chapter 13: Evapotranspiration, Soil, Surface Runoff
17 Nov 2016
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Originated from icy comets, hydrogen and oxygen debris of planetesimals. Outgassing: process where water and water vapor emerge from deep within earth (25 km below surface) and are released as gas. At beginning, massive quantities of outgassed water condense and fall as torrential rain. Earth surface cools below 100 degrees celsius, water remains on surface 3. 8 billion years ago. Quaternary characterized by repeated growth and retreat of ice sheets. Water lost when disassociated into hydrogen and oxygen. Changes in sea level due to size of glaciers, ice sheets. Eustasy: changes in sea level caused by changes in volume of water in oceans. Glacio-eustatic factors influence sea level changes caused by glacial ice melt. Move to land by advection, rain over land. Interception: precipitation lands on vegetation or other ground cover before reaching surface. Drains across leaves and down stems to ground. Chemically different because of interaction with tree, organisms.
