Recent Publications (refereed):    
       
  Walker B.D., S.R. Beaupre, T.P. Guilderson, E.R.M. Druffel, M.D. McCarthy. (2011) Large-volume ultrafiltration for the study of marine dissolved organic matter radiocarbon signatures. Geochimica et Cosmochimica Acta (75) p.5187-5202. pdf (397 KB)    
       
  Christian A. Miller, Bernhard Peucker-Ehrenbrink, Brett D. Walker, Franco Marcantonio. (2011) Re-assessing the surface cycling of molybdenum and rhenium. Geochimica Cosmochimica Acta (75) p.7146-7179.    
  McCarthy M.D., Beaupre S.R., Walker B.D., Voparil, I., Guilderson, T.P., Druffel, E.R.M. (2010) Chemosynthetic 14C-depleted dissolved organic carbon in a ridge-flank hydrothermal system. Nature Geoscience (4) p.32-36. DOI: 10.1038/NGEO1015. pdf (508 KB)    
       
Walker B.D., McCarthy M.D., Fisher A.T., Guilderson T.P. (2008) Dissolved inorganic carbon isotopic composition of low-temperature axial and ridge-flank hydrothermal fluids of the Juan de Fuca Ridge. Marine Chemistry (108) p. 123-136. pdf (524 KB)
   
Roland L.A., McCarthy M.D., Peterson T.D., Walker B.D. (2009) A large-volume micro-filtration system for isolating suspended particulate organic matter: fabrication and assessment vs. GFF filters in central N. Pacific. L&O Methods (7) p.64-80. pdf (1.79 MB)
Publications in prep:
Walker B.D., S.R. Beaupre, T.P. Guilderson, E.R.M. Druffel, M.D. McCarthy. Evidence for the size-age continuum of marine dissolved organic matter. In prep for Nature.
       
  Walker B.D., T.P. Guilderson, M.D. McCarthy. Linkages between seasonal coastal upwelling and the radiocarbon signature of major biochemical reservoirs within the California Current System. In prep for Continental Shelf Research.  
       
  Walker B.D., T.P. Guilderson, M.D. McCarthy. Acid soluble organic matter radiocarbon signatures as a proxy for upwelling-derived organic carbon flux from coastal margins. In prep for GCA.