GEOL 106 Lecture Notes - Lecture 2: Hydrosphere, Lead, Ibm System I
12 Jan 2016
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Document Summary
1969: first landing on the moon (neil armstrong) Once a photograph of the earth, taken from the outside is available a new idea as powerful as any in history will be let loose. - fred hoyle (astronomer), 1948. New model of the earth: fragile spaceship earth. Earth model (global ecosystem): solar energy planetary source. Usage planetary sinks (waste) heat loss. Number of us laws on environmental protection: increases exponentially with time (jump around 1969/1970) View of the earth from space led to increased awareness of the fragility of the earth and the need to better understand it. The president of the us commissions a study of the earth system. What do we need to know in order to live in concert with this fragile earth (see handout) The earth system is a set of interacting subsystems. Five reservoirs of earth system interact in complex ways: atmosphere, hydrosphere (water + ice, solid earth (rocks + soil, life (biota, stars and planets.
