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Ice Core Data

Ice Core Data. Connor Waldron + Stephen Walker Mrs. Geithner P1 12/10/12. Background Info. I ce core  sample removed from ice sheet F rom the ice caps of Antarctica  Greenland  or from high mountain glaciers (Citation 3).

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Ice Core Data

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  1. Ice Core Data Connor Waldron + Stephen Walker Mrs. Geithner P1 12/10/12

  2. Background Info Ice core sample removed from ice sheet From the ice caps of AntarcticaGreenland  orfrom high mountain glaciers (Citation 3). Lower layersare older than upper  ice core contains ice formed over a range of years (Citation 3).

  3. Background Info Cont. 98% of Antarctic covered by the ice sheet 2,500 meters thick deepest location, 4,700 meters thick (Citation 3). Ice sheet formed by accumulation of snow  by drilling from the surface down  we are drilling back in time. Obtained with PICO electro-mechanical drill

  4. How Does This Affect the Climate? 130,000-125,000 years ago  warming period 1◦c-2◦c warmer than now called an inter-glacial (Citation 1). 120,000-20,000 years ago  long cooling period called the Wisconsin Period  last Great Ice Age (Citation 1). 19,000-15,000 years ago  another warming periodto next inter-glacial (which we are in) (Citation 1). Inter Glacial today one of many reasons for global warming mostly due to humans

  5. What are Isotopes? Many quantities have been measured in ice cores to make conclusions about earths history such as oxygen isotope ratios carbon dioxide (citation 6). concentration methane concentrationelectrical conductivityand dust particle concentration. Atoms of the same element have different numbers of neutrons  The different possible versions of each element are called isotopes. Two types O16 and O18 O16 reacts faster because O18 contains 2 more neutrons Able to tell if climate changes whenO18 increases in ocean watersign of warming period

  6. Carbon Dioxide CO2 in the Ice Core Record For the first time in 400,000 yearsCO2 is at 390 parts per million continuing to rise at 2 parts per million (ppm) per year (Citation 5). http://nicl-smo.unh.edu/video/index.shtml

  7. Works Cited Jouzel, J., R. D. Koster, R. J. Suozzo, G. L. Russell. 1994. Stable water isotope behavior during the last glacial maximum: A general circulation model analysis. Journal of Geophysical Research, 99: 25791-25802. Antarctic Ice Cores and Environmental Change. Dr. T.H. Jacka, 1993. Web. 5 Dec.      2012. <http://www.chem.hope.edu/~polik/warming/IceCore/      IceCore2.html>. "Ice Cores." Climate Data Information. N.p., 2010. Web. 6 Dec. 2012.      <http://www.climatedata.info/Proxy/Proxy/icecores.html>. "New Antarctic Ice Core Data: A Closer Look." New Ice Core Data: A Closer Look.      N.p., 30 May 2000. Web. 6 Dec. 2012. <http://www.daviesand.com/Choices/      Precautionary_Planning/Closer_Look/index.html>. "CO2 in the Ice Core Record." National Ice Core Laboratory Science Management      Office. Dr. Richard Alley, n.d. Web. 10 Dec. 2012.      <http://nicl-smo.unh.edu/video/index.shtml>. "Isotopes." Isotopes and Radioactivity. N.p., n.d. Web. 10 Dec. 2012.      <http://www.colorado.edu/physics/2000/isotopes/index.html>.

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