Motion of Particles in Melting Snow

该奖项支持一个在自然条件下和受控实验室实验中研究融化雪中颗粒运动的项目。这项研究有两个主要动机。首先，这项工作将有助于理解自然和工业颗粒沉积在积雪融化过程中的影响。主要焦点将放在元素碳颗粒(烟尘)上，因为它们对辐射特性和环境重要性有很强的影响。其次，这项工作将为冰川学家提供重要信息，他们想知道温带冰盖堆积区颗粒地层学的稳定性是否可以用来寻找过去颗粒沉积的历史，例如，与生物质燃烧或火山喷发有关的历史。实地研究将在华盛顿州蓝色冰川的雪穹上进行。

This award supports a project to study the motion of particles in melting snow, under both natural conditions and in controlled laboratory experiments. The research has two primary motivations. First, this work will aid in understanding the impact of natural and industrial particle depositions in the course of snow melt. Primary focus will be on elemental carbon particles (soot), because of their strong effect on radiative properties and their environmental importance. Secondly, this work will provide important information for glaciologists who want to know if the stability of particle stratigraphy in accumulation areas of temperate ice caps can be used to find past history of particle deposition, for example, in relation to biomass burning or volcanic eruptions. The field studies will be undertaken on the Snow Dome of the Blue Glacier, Washington.