Helium and Rare Gas Studies and Krypton-81 Ages at Vostok

这个奖项是为了支持一个项目，以测量氦 浓度和同位素比、K/Ar比和氪 南极洲东方站的81年冰川。 氦 程序是一个空的搜索和/或反转的 地球的磁场，应该会留下很强的信号 在氦3和氦4的比例中， 冰核氦的浓度。 如果地磁氦 如果记录在冰盖中，它将提供一个 格陵兰岛和 南极洲，用于冰流模型研究， 年表 Kr/Ar测量是为了研究 积雪中气体的重力分馏 的 氪81测年法将首次提供 东方号核心。

This award is for support of a project to measure the helium concentrations and isotope ratios, K/Ar ratios, and Krypton 81 ages in ice from Vostok Station, Antarctica. The helium program is a search for nulls and/or reversals of the Earth's magnetic field, which should leave a strong signal in the helium 3 to helium 4 ratios and the helium 3 concentrations in ice core helium. If a geomagnetic helium event is recorded in the ice sheets, it will provide a world-wide traceable horizon in both Greenland and Antarctica, for model studies of ice flow and for chronology. The Kr/Ar measurements are to study gravitational fractionation of gases in the firn. The Krypton 81 dating will provide the first absolute age on the Vostok core.