http://icestories.exploratorium.edu/dispatches/finishing-our-field-work/ Fri, 29 Oct 2010 21:18:41 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://icestories.exploratorium.edu/dispatches/finishing-our-field-work/comment-page-1/#comment-58 John D. Voyde Sat, 29 Dec 2007 00:49:54 +0000 http://icestories.exploratorium.edu/dispatches-new/?p=109#comment-58 I am wondering if anyone is looking at the deuterium/hydrogen ratio profile in polar water, ice, minerals, bird feathers, etc. to see if there are any historic changes or trends. I recently read how the U.S. Geological Survey mapped D/H ratios in migratory birds and found some correlations with latitude. My own hypothesis is that D/H ratios are caused by astronomical phenomena which become fixed in organic and mineral processes. John I am wondering if anyone is looking at the deuterium/hydrogen ratio profile in polar water, ice, minerals, bird feathers, etc. to see if there are any historic changes or trends. I recently read how the U.S. Geological Survey mapped D/H ratios in migratory birds and found some correlations with latitude. My own hypothesis is that D/H ratios are caused by astronomical phenomena which become fixed in organic and mineral processes.
John

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