Figure 3 Activity concentrations of 210Pbtot, 226Ra, 228Ra and 228Th (Bq kg-1 dw) in sectioned (0-1, 1-3 and 3-6 cm) sediment cores from stations IAA03, IAA32, IAA36 and IAA37. The station name of IAA37 was originally IAA29. Results below detection limits are shown as open circles. Average depths of each section are plotted. Analytical uncertainties are given as ±2σ .
