Climatological, Implications of Microparticle Concentrations in the Ice Core From “Byrd” Station, Western Antarctica

Abstract

The concentration of microparticles in the 216 4 m long ice core from “Byrd” station Antarctica, varies cyclically. Highest concentrations of 0.65 μm diameter microparticles occur where oxygen-isotope studies show lowest paleotemperatures. The age of the bottom ice estimated from microparticle-concentration variations, assuming an annual cycle, is 27 000 years, much less than from oxygen-isotope studies.