Excess 210Po and nutrient recycling within the California coastal transition zone
Article
Kadko, D. (1993). Excess 210Po and nutrient recycling within the California coastal transition zone
. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, 98(C1), 857-864. 10.1029/92JC01932
Kadko, D. (1993). Excess 210Po and nutrient recycling within the California coastal transition zone
. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, 98(C1), 857-864. 10.1029/92JC01932
Profiles of 210Pb, 210Po, and nutrients were measured within a cold, chlorophyll-rich filament observed in satellite images off Point Arena, California. The most striking observation was the large excess of 210Po in the surface water of near-shore filament stations. This excess 210Po, typically associated with the breakdown of particles in the upper thermocline, is indicative of the transport of recently upwelled water seaward within the filament. Products of particle breakdown, such as NO2 and 210Po, are continuously recycled and accumulate along the meander path. The implication is that within the coastal transition zone, some portion of the nutrients incorporated into new production has also been regenerated along the meandering flow. The excess 210Po is removed from the chlorophyll-rich filament at a rate which is approximately an order of magnitude greater than 210Po removal from open ocean surface water. -from Author
