Abstract. Dating glaciers is an arduous yet essential task in ice core studies, which becomes even more challenging when the glacier experiencing mass loss accumulation zone as result of climate warming, leading to older surface unknown age. In this context, we dated a 46 m deep from Central Italian Alps retrieved 2016 Adamello locality Pian di Neve (3100 a.s.l.). Here present timescale for obt...

Background: The activity concentrations of some radionuclides in soil samples collected from 20 locations in 8 major towns in Oyo State, Southwestern Nigeria have been determined by gamma-ray spectrometry technique. Materials and Methods: The activity concentrations were determined using high-purity germanium (HPGe) detector (Canberra Industries Inc.). The outdoor absorbed dose rates in air at ...

introduction artificial and natural radionuclides are found in diverse environmental compartments, such as water, soil, rocks, vegetables, animals, and human body tissues. as such, humans and environments are at constant exposure of these radiation types. in this research investigated specific activities of radionuclide and dose assessment of some species of mushrooms. materials and methods in ...

The aims of this study were to assess the potential radioactive contamination of fodder in the case of accidental radionuclide fallout, and to analyse the relationship between interception and retention of radionuclides as a function of biomass and Leaf Area Index (LAI). The interception and the retention of wet deposited (134)Cs and (85)Sr in ley (a mixture of grass and clover) were measured a...

A methodology is proposed for grading the utility of lake sediment cores used to reconstruct pollution histories. The observed distribution of 13’Cs with depth in the core is compared to that expected from independent, historic measurements of fallout deposition. The width of the 13’Cs peak in the core profile that corresponds to the fallout maximum of 1963, or the combined maxima of 1959 and 1...

Wet and dry atmospheric fallout from nuclear weapon tests is one of the most important sources of plutonium in the Baltic Sea. The other sources: plutonium releases from spent fuel facilities in Sellafield (UK) and Cap de la Hague (France) are less important. Since 26 April 1986 it has been a new source of plutonium – Chernobyl plutonium, which should be taken under note in estimation of its ra...

Sedimentation rates and mixing depths have been estimated from the application of a two-layer biodiffusion model to 210Pb profiles in sediment cores collected in the Laurentian Trough in the Estuary and Gulf of St. Lawrence. Sedimentation rates decrease exponentially with distance seaward from 0.70 cm yr21 (0.47 g cm22 yr21) near the head of the Trough to 0.04 cm yr21 (0.03 g cm22 yr21) in the ...

Soil erosion is a global environmental problem, and anthropogenic fallout radionuclides offer a promising tool for describing and quantifying soil redistribution on decadal time scales. To date, applications of radioactive fallout to trace upland sediment transport have been developed primarily on lands disturbed by agriculture, grazing, and logging. Here we use Cs to characterize and quantify ...