Atmospheric injections of polonium-210 from the recent volcanic eruptions.

Excitation of atmospheric oscillations by volcanic eruptions

We investigated the mechanism of atmospheric oscillations with periods of about 300 s which were observed for the 1991 Pinatubo and the 1982 E1 Chich6n eruptions. Two distinct spectral peaks, at T=270 and 230 s for the Pinatubo eruption and at T=195 and 266 s for the E1 Chich6n eruptions, have been reported. We found similar oscillations for the 1980 Mount St. Helens and the 1883 Krakatoa erupt...

Why Polonium 210?

President’s Message ........................................... 2 Inside the Beltway ........................................... 9 Editorial .......................................... 10 Committee Activities .......................................... 11 McBurney New CRCPD Director .......................................... 12 Chapter News .......................................... 13 New HPS Of...

Polonium-210 budget in cigarettes.

Due to the relatively high activity concentrations of (210)Po and (210)Pb that are found in tobacco and its products, cigarette smoking highly increases the internal intake of both radionuclides and their concentrations in the lung tissues. That might contribute significantly to an increase in the internal radiation dose and in the number of instances of lung cancer observed among smokers. Samp...

Volcanic Eruptions

Bioaccumulation of polonium-210 in marine copepods

210Po, a naturally occurring radioisotope that is ubiquitous in seawater, is especially enriched in proteinaceous tissues of marine organisms and may therefore be useful as a tracer of organic carbon flux in marine systems. Due in part to its biomagnification in marine food chains, 210Po provides the largest radiation dose to any organism under natural conditions. To better understand the exten...