EAES 101 Lecture Notes - Lecture 13: Longshore Drift, Topsoil, Crop Rotation
30 Sep 2016
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Industrial contamination: grasslands cover 40% of the land surface: rich soils that hold in moisture, cycle nutrients, and support biodiversity, 26% of grasslands are used for grazing livestock: overgrazing destroys plant growth, soil becomes compacted, and erosion increases. D. c ships 300 miles off the atlantic coast, were coated with dust. It is made worse by : overpopulation, overgrazing, careless agriculture, diversion of water supplies, desertification leads to famine. Soil and climate change: large amounts of carbon is stored in soils ~ about 3x that in vegetation and 2x atmosphere. Waves: ocean waves build in response to the shear of wind blowing over the water surface. Higher energy wind yields higher energy waves remember why we have winds. Waves: oceanic waves develop via friction of wind on water, crest-top of wave. How will this affect the wave base: the wave base will move down. Iclicker: in the figure below, which location would the waves break further from the beach: b.
