ENSC 2001 Lecture Notes - Lecture 1: Risk Management, Economic Impact Analysis, Risk Assessment
11 Sep 2017
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Document Summary
Environmental crises: population, env hazards, resource limitations and contaminations, env ownership (both in space and time) Optimize the use of resources to maximize environmental benefits for the society. Symbol is a group of three rings, that if anyone is severed, all three rings become separated. The hydrosphere, lithosphere, and atmosphere, therefore if one becomes so effected, all become effected. All are tied to one or more of the other, so all will be impacted. Doubling time is how long it takes the pop to double. Development and improvement of human env vs viable env. Two engines behind its dynamics: internal and external heat sources. Four interconnected subsystems: lithosphere, atmosphere, hydrosphere, and biosphere (ecosphere) System changes: types of changes, rates of changes, scales of changes Rates of change: average residence time, t=s/f (t: residence time, s: total size of stock, Example of system input-output analysis: input = output, no change in size of pool or stock.
