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Canada (508,850)
EESA06H3 (560)
Nick Eyles (492)
Lecture 11

Lecture 11

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Environmental Science
Nick Eyles

EESA06 Lecture 11 Page 1 EESA06 Lecture 11 Environmental Challenges: - Urban sprawl J need for concrete - Urban shadow - Managingprotecting water resources - Watersheds and ecosystems (rivers are hardened J only flows straight, more flashy, less groundwater, more flooding - Wastes (nuclear, municipal, industrial etc) J oL]ooZ^}}Z]2Z}}K]L_ - Remediation of contaminated sites J clean them up, ground fill sites use horse manure - Radon gas J Uranium to lead, invisible = lung cancer etc. from granite and shales - Hazards: earthquakes, landslides & tsunamis - Mitigation of climate warming effects J 1998 was the warmest year, cooling in the future? - Environmental impact of resource extraction and energy supplies J coalgold mining, quarrying, Alberta oil sands - Environmental policy and planning ;JLL]}LKLo2}Z ]L]ZZ Scope of Environmental Geo sciences J protecting humans from natural hazards - Understanding earth processes - Providing resource security J iron, coal, gold etc. - Helping society adjust to global change J the way in which the planet is evolving naturally - Providing reliable information for planning and environmental decision making - - Protection from natural hazards - Public health and safety J Radon, Medical geology High Costs of US & China & Japan = as urban areas get bigger, more susceptible to hazards - Population in cities = Jo }K}ZLZ}} L9^Z} Z},L_ 1947 & 1962 J Scarborough bluffs - Rapid harming, replacing permeable surfaces with hard asphalt - - Began with the invention of the steam engine - Beginning of industrial revolution, demand for resources, move of people to urban areas, urbanization Blue = surface flow = Runoff Red = base flow = ground water Hydro water graph - Measure the rising and falling of stream flow - Less water to dilute contaminants, warmer
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