Lecture1 - • • • A very broad definition… You can...

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Unformatted text preview: • • • A very broad definition… You can learn more about item 2b in other courses… re he sp ro yd H Tr op os ph er e Life Life Crust Thermosphere re he sp ro yd H Mesopsphere Tr op os ph er e Stratosphere Life Crust Mesopsphere Tr op os ph er e Stratosphere tle Thermosphere an M re he sp ro yd H C or e Lithosphere Life Magnetic field shields Earth’s surface from harmful solar wind and galactic cosmic rays Crust Lithosphere Magnetosphere http://science.nasa.gov/ssl/pad/sppb/index_Edu.html Mesopsphere Tr op os ph er e Stratosphere tle Thermosphere an M re he sp ro yd H C or e Moon Life Crust Lithosphere Magnetosphere Moon-forming impact altered early Earth evolution Moon controls tides Lunar “biorhythms” Sun Mesopsphere Tr op os ph er e Stratosphere tle Thermosphere an M re he sp ro yd H C or e Moon Strong effect on climate over 106 - 109 years; perhaps also on shorter timescales Life Crust Lithosphere Magnetosphere Jupiter C en te r Local Stars Sun G al ac tic Moon Mesopsphere Tr op os ph er e Stratosphere tle Thermosphere an M re he sp ro yd H C or e Lo ca lG rou Mi pG lky ala Wa xie yG s ala xy Affects inner planet orbits; affects bombardment by deflecting comets, etc. Life Crust Lithosphere Magnetosphere Jupiter In this course the primary focus will be on the 10-100 km scale. What about the temporal scale of the Earth System? Esp. the environment we see today was shaped by past events… Origin of Life > 3.85 x 109 years ago Origin of the Universe ~ 1.2 x 1010 years ago Biological evolution Origin of the elements Origin of stars, planets Environmental evolution Origin of the Earth 4.55 x 109 years ago • • • • • • • • • • • • • ...
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This note was uploaded on 06/15/2011 for the course GEOL 103 taught by Professor Lakshmi during the Spring '10 term at South Carolina.

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