论文标题
迈向雪晶体生长的综合模型:8。表征与结构相关的附着动力学接近-14 c
Toward a Comprehensive Model of Snow Crystal Growth: 8. Characterizing Structure-Dependent Attachment Kinetics near -14 C
论文作者
论文摘要
在本文中,我研究了与包括结构依赖性附着动力学(SDAK)的综合模型相比,雪晶的生长接近-14 c。分析了一系列空气中的冰结构观测,我表明数据强烈支持该模型,该模型规定了基础生长是由经典露台成核在该温度区域的刻面表面上描述的。相比之下,棱镜的生长表现出明显的“ SDAK DIP”,从而大大降低了狭窄的棱镜面的成核屏障(相对于在广阔的棱镜面上发现的相对)。我使用这些测量结果进一步表征和完善了SDAK模型,这有效地解释了14 C附近的空气中血小板状的雪晶体的稳健形成。
In this paper I examine snow crystal growth near -14 C in comparison with a comprehensive model that includes Structure-Dependent Attachment Kinetics (SDAK). Analyzing a series of ice-growth observations in air, I show that the data strongly support the model, which stipulates that basal growth is described by classical terrace nucleation on faceted surfaces in this temperature region. In contrast, prism growth exhibits a pronounced "SDAK dip" that substantially reduces the nucleation barrier on narrow prism facets (relative to that found on broad prism facets). I use these measurements to further characterize and refine the SDAK model, which effectively explains the robust formation of platelike snow crystals in air near 14 C.