Lecture2_Earth-System-Overview

Lecture2_Earth-System-Overview - EAS 1600 Introduction to...

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EAS 1600 Introduction to Environmental Science ¾ The Earth as a System Different Perspectives of Earth •A s a planet Taken from http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery.html Different Perspectives of Earth From the perspective of a Geophysicist: (Taken from Monroe, J.S. and R. Wicander, Physical Geology: Exploring the Earth , West Publishing, St. Paul, MN, 639 pp, 1992.) Different Perspectives of Earth From the Perspective of a Meteorologist:
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Different Perspectives of Earth From the Perspective of an Oceanographer: http://www.cdc.noaa.gov/map/images/sst/sst.anom.gif Different Perspectives of Earth From the Perspective of an Ecologist: Taken from S.S. Butcher, R.J. Charlson, G.H. Orians, and G.V. Wolfe, Global Biogeochemical Cycles , Academic Press, New York, NY, 379pp, 1992. The Earth as a System The Earth as a Planet in the Solar System Some useful statistics about the solar system: The sun and planets of the solar system Object Mean Distance to sun (10 6 km) Orbital Period (days) Rotation Period (days) Axis Tilt ( o ) Radius at Equator (km) Mass (kg) Density (g/cm 3 ) # of satellites Sun - - 25.5 - 1,391,400 1.99x10 30 1.41 - Terrestrial Planets Mercury Venus Earth Mars 57.9 108.2 149.6 227.9 88.0 224.7 365.3 687.0 58.7 243 1 1.03 28 3 23.7 24 2,440 6,057 6,380 3,294 3.33x10 23 4.87x10 24 5.97x10 24 6.42x10 23 5.43 5.24 5.52 3.96 0 0 1 2 Outer Planets Jupiter Saturn Uranus Neptune Pluto 778.3 1,428.3 2,872.7 4,498.1 5,914.3 4,333 10.759 30,685 60,188 90,700 0.41 0.43 0.72 0.67 6.39 3 27 98 30 122 142,796 120,660 51,220 49,500 2,300 1.90x10 27 5.69x10 26 8.69x10 25 1.03x10 26 1.20x10 22 1.33 0.69 1.27 1.76 2.03 18 15 8 1 Moon 0.38 (from Earth) 27.3 27.32 7 3,476 7.35x10 22 3.34 -
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Relative Abundances of Elem ents in the Solar System E lem en t Atomic Number Terrestrial Abundance [atoms/10 4 Si atoms] Solar System 4 Deficiency Factor [log (b/a)] H 1 84 3.5 x 10 8 6.6 He (1) 23 . 5 x 1 0 -7 7 14 C (3) 67 1 8 0 , 0 0 04 N 7 0.21 160,000 5.9 O 8 35,000 220,000 0.8 F 9 2.7 90 1.5 Ne 10 1.2 x 10 -6 50,000 10.6 Na (2) 11 460 462 0 Mg 12 8900 8870 0 Al 13 940 882 0 Si 10,000 0 P 15 100 130 0.1 S 16 1000 3500 0.5 Cl 17 32 170 0.7 A 18 5.9 x 10 -4 1200 6.3 Kr 36 6 x 10 -8 0.87 7.2 Xe 54 5 x 10 -9 0.015 6.5 Composition of Atmospheres of the Inner Planets Venus Mars Earth CO 2 96.5% 95% 0.03% N 2 3.5% 1.9% 79% H 2 O 2 x 10 -5 3 x 10 -4 <1% - ~4% O 2 <1 x 10 0.13% 21% Ar 70 x 10 -6 1.6% 1% CH 4 0.0 0.0 1.7 x 10 -6 Temp at surface 459 C -53 13 Pres. at surface 90 bars 0.00064 1.0 The Earth as a Planet in the Solar System Earth’s Orbit About the Sun The Earth rotates about its axis as it orbits the sun.
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Lecture2_Earth-System-Overview - EAS 1600 Introduction to...

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