EVST 215 Study Guide - Final Guide: Keystone Pipeline, Ogallala Aquifer, Beach Nourishment
29 Mar 2016
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Document Summary
System - complex entity that consists of interacting components (connected elements) Equilibrium - balance among the components in a system. Sustainability - how far we can use a resource without reaching the tipping point or ruining the environment. Feedback mechanisms (reciprocal loops) - change imposed in system elicits a response. Positive feedback - change in system elicits a response that promotes further change. Negative feedback - change in system results in response that halts or resists further change. Surprises - unintended consequences as result of poorly understood system. Legacy effects - prior history affects modern processes. Time lags - results/impacts of a disturbance not felt for a long time. Resilience - systems capacity to withstand a disturbance and continue to function. Coupled human and natural systems - links basic concepts of system dynamics in physical/biological systems to a human aspect of a system. Recycled fracking water (closed loop water handling) Potential for seismicity from deep injection wells.
