arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.14268physics.ao-ph
收藏

极地冰中三联点和颗粒边界对气候信号的影响

Triple Junction and Grain Boundary Influences on Climate Signals in Polar Ice

Thomas M. Beers, Sharon B. Sneed, Paul Andrew Mayewski, Andrei V. Kurbatov, Michael J. Handley

摘要:

气候变化研究所W。M.凯克激光冰设施激光烧蚀电感耦合等离子体光谱仪(LA-ICP-MS)每121微米产生一个样品,分辨率为冰芯中冰晶三联点和晶界的尺度。最近的出版物表明,这些特征可以放大杂质浓度,并允许通过静脉迁移,可能会掩盖极地冰中保存的气候信号。LA-ICP-MS数据显示,这些功能修改这些信号小于6%的情况下,钠,钙,铁的基础上检查GISP 2冰沉积在全新世开始。

英文摘要:

The Climate Change Institute W. M. Keck Laser Ice Facility laser ablation inductively coupled plasma spectrometer (LA-ICP-MS) yields a sample every 121 micrometers, a resolution on the scale of ice crystal triple junctions and grain boundaries in ice cores. Recent publications suggest that these features can allow amplification of impurity concentrations, and allow migration through veins potentially obscuring climate signals preserved in polar ice. LA-ICP-MS data reveal that such features modify these signals by less than 6% in the case of Na, Ca, and Fe based on the examination of GISP2 ice deposited at the beginning of the Holocene.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑