Measurements and Model Development of Antarctic Snow Accumulation and Transport Dynamics

南极积雪和运输动力学的测量和模型开发

• 批准号: 9417255
• 负责人: David Braaten
• 金额: $ 10.59万
• 依托单位: University of Kansas Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-04-01 至 1999-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9417255&HistoricalAwards=false
• 关键词: Measurements; Model; Development; Antarctic; Snow

This award is for support for a three year project to continue an on-going study of time-dependent processes of Antarctic ice sheet snow accumulation and transport dynamics, using a recently developed system which automatically disperses colored glass microspheres onto the snow surface at 14 day intervals. The microspheres act as both a time marker and tracer within the snow profiles. Currently, two units are deployed on the Ross Ice Shelf near automatic weather stations. After another year of operation at the existing sites they will be moved and operated for two years at an automatic weather station site influenced by strong katabatic winds and an automatic geophysical observatory facility on the polar plateau, where precipitation and wind-blown snow characteristics are very different from coastal regions. This research will combine experimental and modeling approaches to try to understand the processes controlling snow accumulation and wind-driven transport of snow.

该奖项是为了支持一个为期三年的项目，继续进行南极冰盖积雪和运输动力学随时间变化的过程的研究，使用最近开发的系统，该系统以14天的间隔自动将彩色玻璃微球分散到雪表面。 微球在雪剖面中既作为时间标记又作为示踪剂。 目前，两个单位部署在罗斯冰架附近的自动气象站。 在现有站点再运行一年后，它们将被转移到受强烈下降风影响的自动气象站站点和极地高原上的自动地球物理观测设施运行两年，那里的降水和风吹雪特性与沿海地区大不相同。 本研究将结合联合收割机实验与模拟的方法，试图了解雪的累积与风驱动的雪的输送的控制过程。