To have a clearer picture of mechanisms responsible for the deviation of tropical cyclone (to be
simplified as TC hereafter) tracks, the current work assumes the TC as a circular vortex with a radius of R. A
general motion equation of TC is then determined by averaging its horizontal motion equation over the sentire
region of TC. In the meantime, with the moving track of TC assumed as a characteristic arc, the curvature equation
is derived for the track of movement and patterns of its deviation due to TC structure and variation are
discussed. The result shows that the scale, size, maximum wind speed and radius are factors causing the deviation
of TC tracks. In addition, asymmetric structure of TC is also important for the deviation of tracks. The results,
achieved with hypothesis, agree with facts in some cases but disagree with them in others, which are to be
verified with more observations or numerical simulations. 相似文献
城市群的研究成果对中国城市群总体格局形成起到了引领作用,为中国新型城镇化发展做出了重要贡献。通过关注位于丝绸之路经济带结合点的喀什城市圈,基于CiteSpace文献计量方法以中文核心期刊和EI、Web of Science核心合集数据,通过分析核心关键词、研究热点、研究机构和团队总结了国内外在喀什城市圈城镇化发展与生态环境交互胁迫效应方面的研究成果。认为目前对喀什城市圈研究非常薄弱,主要体现在研究重点集中在城镇化与生态环境关系探讨,从城市人口集聚、城市经济增长、城市空间扩张三个层面初步揭示了城市圈城镇化对水资源和土地资源单要素的胁迫作用;并从水资源、土地资源、大气环境等单要素角度深入研究城市圈生态环境对城镇化的限制作用。未来需加强喀什城市圈的研究和建设,以国家战略需求为导向,继续深化城市圈形成发育中资源环境交互胁迫效应方面的研究。 相似文献