Due to the remoteness and difficulty of sampling, 210 Po Pb data are scarce in Southern Ocean. Here, activity concentrations around Prydz Bay austral summer were determined understand their spatial variation evaluate dynamics particle organic matter (POM). The dissolved (D Po) Pb) range from 0.47 3.20 Bq⋅m –3 1.15 2.97 , respectively, with lower values shelf. particulate (P open ocean increase ...

The disequilibrium between lead-210 ( 210 Pb) and polonium-210 Po) is increasingly used in oceanography to quantify particulate organic carbon (POC) export from the upper ocean. This proxy based on deficits of Po typically observed water column due preferential removal relative Pb by sinking particles. Yet, a number studies have reported unexpected large deep ocean indicating scavenging despite...

Dams are important reservoirs in semiarid regions providing the needs of population and agricultural activities an area which intermittent rivers predominate. These subject to erosion processes that can cause sedimentation affect quality water them. The method dating sediments using 210Pb is well known used establish a precise chronology places where abrupt changes conditions do not occur. work...