Other Oceanography and Atmospheric Sciences and Meteorology Commons^™

Comparison Of The Scavenging Intensity, Remineralization And Residence Time Of 210po And 210pb At Key Interfaces (Biotic, Sediment-Water And Hydrothermal) Along The Geotraces East Pacific Zonal Transect, John Niedermiller

Wayne State University Theses

The contrasting geochemical behavior of two long-lived progeny of 222Rn, namely 210Po and 210Pb, provide valuable insights on the extent of recycling of biogenic particulate matter and their preferential removal from the water column. A total of 135 water samples were collected and analyzed from six vertical profiles for 210Po and 210Pb along the US GEOTRACES East Pacific Zonal Transect. This study shows decreasing atmospheric 210Pb flux from the measured 210Pb activity in aerosols indicating an overall decrease from east to west along the cruise transect. Differences in scavenging intensities, inventories, and residence times of 210Po and 210Pb at key …