Figure 12 Activity concentrations (Bq kg-1 dw) of 210Pbtot, 226Ra, 228Ra and 228Th in sectioned (0-1, 1-3 and 3-6 cm) sediment cores from stations NJ13, NJ14 and NJ28. Average depths of each section are plotted. Analytical uncertainties are given as ±2σ .
