An automated tracer dispersal system for snow accumulation and saltation transport investigations
An automated tracer dispersal system for snow accumulation and saltation transport investigations
复制标题
用于积雪和跃移传输研究的自动示踪剂扩散系统
DOI：
10.1063/1.1148696
复制
发表时间：
1998
影响因子：
1.6
通讯作者：
K. Ratzlaff
中科院分区：
文献类型：
--
作者：
D. Braaten;K. Ratzlaff
描述了新的自动化仪器，用于评估偏远恶劣环境中积雪和雪跃移传输的详细空间和时间动态。仪器和技术提供了当前方法无法提供的重要的定量的、与时间相关的信息，例如积雪层的精确年代、风扫环境中的雪粒跃移传输距离以及风产生的表面特征的特征。该仪器由超低功率计时系统、气动系统和微球发生器组成，可定期将彩色玻璃微球示踪剂分散到雪面上。雪采样必须在融化发生之前进行，随后对微球的识别表明，这种方法能够提供具有详细空间分辨率的准确年代信息，以及表征雪的风吹跃移传输。
New automated instrumentation to assess detailed spatial and temporal dynamics of snow accumulation and saltation transport of snow in remote, harsh environments is described. The instrumentation and techniques provide important quantitative, time dependent information which current methods are incapable of providing such as precise dating of accumulated snow layers, snow grain saltation transport distance in wind-swept environments, and characteristics of wind generated surface features. This instrument consists of an ultralow power timing system, a pneumatic system, and microsphere generators to periodically disperse a tracer of colored glass microspheres onto the snow surface. Snow sampling must be conducted before melting occurs, and subsequent identification of microspheres has shown this method is capable of providing accurate dating information with detailed spatial-resolution, as well as characterizing wind blown saltation transport of snow.