Hoffmann, Sharon S <br/><br/>
Persistent export of 231Pa from the deep central Arctic Ocean over the past 35,000 years.  [electronic resource] 

 -  Nature  May 2013 
 - 603-6 p.  digital 
<br/><br/> Publication Type: Historical Article; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. 
<br/><br/><label>ISSN: </label>1476-4687 
<br/><br/><label>Standard No.: </label>10.1038/nature12145  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arctic Regions<br/>Atlantic Ocean<br/>Foraminifera--isolation & purification<br/>Geologic Sediments--chemistry<br/>History, Ancient<br/>Ice Cover<br/>Protactinium--analysis<br/>Seawater--chemistry<br/>Thorium--analysis<br/>Water Movements