Electrical and Optical Measurements on the Siple Dome Ice Core

该奖项是对Siple Dome冰芯电学和光学特性测量的支持。电学方法可用于确定氢离子的浓度和所有离子的加权和的浓度。电学测量可以分辨出小到1厘米的特征。核心的反照率也是用激光系统测量的，该系统可以分辨出小到0.5厘米的特征。这些方法的高空间分辨率使它们非常适合于分辨岩心中的狭窄特征，而这些特征在较大的复合样本中可能会被忽略。这些测量将特别有助于帮助确定核心的年代和识别记录中的短期特征，如火山喷发。这些测量还将为评估全新世堆积速率和大气环流的时间变异性提供有用的信息。

This award is for support for the measurement of electrical and optical properties of the Siple Dome ice core. The electrical methods can be used to determine the concentration of the hydrogen ions and the concentration of a weighted sum of all ions. The electrical measurements can resolve features as small as 1 cm. The albedo of the core is also measured with a laser system that can resolve features as small as 0.5 cm. The high spatial resolution of these methods makes them ideal for resolving narrow features in the core, which can be missed in larger composite samples. The measurements will be particularly useful for assisting to date the core and to identify short duration features in the record, such as volcanic eruptions. These measurements will also provide useful information for assessing the temporal variability of Holocene accumulation rate and atmospheric circulation.