Abstract
Soberman and Hemenway [1965] gave values for the meteoric dust flux at altitudes of 75 to 168 km, measured with rocket-borne samplers on days of meteor shower activity. In this note their values are compared with the flux of microparticles falling from the atmosphere onto the surface of the Greenland and the Antarctic ice sheets. In this laboratory and elsewhere, techniques have been developed for measuring the microparticle content of cores of ice from the polar ice sheets [Bader et al., 1965; Taylor and Gliozzi, 1964]. The dust concentration in ice cores from site 2 on the Greenland ice sheet (at 2000 m elevation and about 320 km east of Thule) varies cyclically with depth, the average wavelength being within 1% of the recent annual accumulation expressed as thickness of ice. Dust concentration in South Pole firn is not smoothly periodic in vertical profile. However, annual flux has been determined by reference to stake measurements of annual snow accumulation.
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