Law Dome DE08-OH site noble gases in ice: testing the 86Krexcess proxy

This data set consists of high-precision krypton and argon isotope measurements, along with 15N and 18O of O2. This data tests the hypothesis that the 2nd order parameter 86Krexcess (86Kr/82Kr - 40Ar/36Ar) serves as a proxy indicator of past storminess, via atmospheric pressure changes that cause barometric pumping in the firn and hence greater gravitational disequilibrium in the heavier Kr atom than in Ar. These measurements were made as part of the US-Australian Law Dome DE08-OH campaign in 2018-2019. Nitrogen and dioxygen isotopes were also measured.本数据集包含高精度氪（krypton）、氩（argon）同位素测量结果，以及氧气的15N与18O同位素数据。本数据集用于验证下述假说：二阶参数86Kr过剩（86Kr/82Kr - 40Ar/36Ar）可作为古风暴活动的代用指标，其作用机制为：大气压力变化会在粒雪层（firn）中引发气压抽吸，进而使重原子氪相较于氩产生更显著的重力不平衡。本次测量为2018-2019年美澳合作劳穹（Law Dome）DE08-OH科考项目的组成部分，研究团队同时测定了氮与氧气同位素。