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GY 102 Topic 7 notes

by: Conner Jones

GY 102 Topic 7 notes GY 102

Conner Jones
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Pitts GY 102 notes
Earth System Processes
Mary Pitts
Class Notes
Pitts GY 102 notes topic 7 water
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This 2 page Class Notes was uploaded by Conner Jones on Thursday April 7, 2016. The Class Notes belongs to GY 102 at University of Alabama - Tuscaloosa taught by Mary Pitts in Fall2014. Since its upload, it has received 22 views. For similar materials see Earth System Processes in Geography at University of Alabama - Tuscaloosa.

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Date Created: 04/07/16
Topic 7 – Water Water is a critical resource  71% of earth is covered by water  70% of our body mass by weight is water  you can survive 50-60 days w/o food, only 2-3 days w/o water  quantity equilibrium: 326 M cubic miles on earth hydrologic cycle  circulation and transformation of water throughout the earth’s atmosphere, hydrosphere, cryosphere, lithosphere, and biosphere  composed of currents of water, water vapor, ice and energy flowing continuously in an open plumbing system types of drought  meteorological – slightly lower rainfalls and slightly higher temperatures than usual  agricultural – higher temp and lower rainfalls has started to impact agriculture  hydrologic – lake levels will fall, shrinking back of lakes and rivers (we see changes)  socio-economic – we can see loss of infrastructure (trees dying, wildfires, fish dying) precipitation = actet (precip-deficit) + surplus +/- delta storage fresh water usage 1. thermoelectric power – 41% 2. irrigation – 37% 3. public and domestic – 12.6% 4. industrial – 5.2% 5. aquaculture – 2.5% 6. mining – 1.1% 7. livestock – 0.6% bonus question: what is the best land use for water quality protection? Answer: forest Question: what is the most common pollutant in the Tuscaloosa lakes? Answer: sediment How does groundwater contamination move? Down gradient Aquifer – a rock unit that can store and transmit water to a well or spring in useful amounts (porosity and permeability)  porosity is amount of pore space  calculated as a percent, 10-30% is high porosity  permeability – how interconnected the pores are o primary – exists at the time rock is formed o secondary – develops over time o permeable allows water to move through o impermeable does not allow water to move through water is the only resource in which there is no substitute for


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