GEOL 108 - Crises of a Planet Lab 8 - Rivers and Flooding Oct. 23 - 26, 2012 Department of Earth Sciences.

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Presentation transcript:

GEOL Crises of a Planet Lab 8 - Rivers and Flooding Oct , 2012 Department of Earth Sciences

SURVEY RESULTS | 2 SURVEY RESULTS

Department of Earth Sciences SURVEY RESULTS | 3 SURVEY RESULTS “Other” included Ziggy Marley, Gangnam Style, Spice girlsss, ROCK and roll (get it?), House, Queen, Dubstep.. not, and Metal.

Department of Earth Sciences SURVEY RESULTS | 4 SURVEY RESULTS Most popular animals were lion and tiger. Unusual answers included Mick Jagger and a liger.

Department of Earth Sciences REVIEW | 5 QUIZ 6 REVIEW Describe the two ways in which fire can enhance the probability of mass wasting. What was the non-porous wood board an analog for in the sand experiment? How do small amounts of water affect slope stability when compared to large amounts of water? Bonus: What two elements is steel usually made of?

Department of Earth Sciences RIVERS AND FLOODING | 6 LAB 8 - RIVERS AND FLOODING Plitvička

Department of Earth Sciences RIVERS AND FLOODING | 7 STREAM GENESIS Time 1 Time 2 Time 3

Department of Earth Sciences RIVERS AND FLOODING | 8 STREAM TYPES MeanderingBraided

Department of Earth Sciences RIVERS AND FLOODING | 9 STREAM EVOLUTION Point bars Cut banks Creation of oxbow lakes

Department of Earth Sciences RIVERS AND FLOODING | 10 STREAM EVOLUTION Stream paths move naturally over time Sometimes at odds with modern settlements

Department of Earth Sciences RIVERS AND FLOODING | 11 FLOODS Floods are a natural process Floods add nutrients to soil

Department of Earth Sciences RIVERS AND FLOODING | 12 FLOODS

Department of Earth Sciences RIVERS AND FLOODING | 13 FLOODS Levee and earthen dam failure

Department of Earth Sciences RIVERS AND FLOODING | 14 FLOODS Leaking weakens reservoirs Example: Taum Sauk Reservoir in Missouri National Agriculture Imagery Program (NAIP), USDA

Department of Earth Sciences RIVERS AND FLOODING | 15 FLOODS Taum Sauk Reservoir failed, more than a billion gallons emptied in 30 minutes

Department of Earth Sciences RIVERS AND FLOODING | 16 Baldwin Hill Reservoir Failure, 1963 Sanders et al., 2010

Department of Earth Sciences RIVERS AND FLOODING | 17 Baldwin Hill Reservoir Failure, 1963 Sanders et al., 2010