PRINCIPAL 

 INVESTIGATOR(S) 



Ken O. Buesseler 



Department of Marine Chemistry and Geochemistry 



Woods Hole Oceanographic Institution 



Woods Hole, MA 02543 



S. Bradley Moran 

 Graduate School of Oceanography 

 University of Rhode Island 

 South Ferry Road 

 Narragansett, RI 02881 



Ellen R. M. Druffel 

 Department of Geosciences 

 University of California - Irvine 

 Irvine, CA 92717 



PROJECT TITLE 



TRANSFORMATION RATES AND FATE OF DISSOLVED, 

 COLLOIDAL AND PARTICULATE FORMS OF ORGANIC 

 CARBON IN OCEAN MARGINS 



AMOUNT OF FUNDING FY 1994: $228 K 



SUMMARY OF GOALS 



The goal of this work is to use natural isotopic tracers (^Th, 228 Th, 230 Th, 12 C, 13 C, 14 C) 

 measured on different organic carbon phases to provide information on turnover rates, sources 

 and fate of organic carbon in ocean margins. 



SPATIAL AND TEMPORAL SAMPLING SCALES 



Sampling scales involve both an examination of seasonal signals in the DOC/COC/POC 

 pools (i.e. covering a range of biological settings and physical conditions), and spatial contrast 

 with onshore/off shore changes in isotopic characteristics, and profiles from surface to depth over 

 the slope. 



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