Abstract
海南激光雷达站（20°N，110°E）2011年11月2日观测到强烈的突发钠层（SSL）.该SSL峰值密度达37087cm<sup>-3</sup>，半峰全宽仅为0.9km.对该SSL发生前后的钠层峰值密度和高度特性进行分析.统计激光雷达2010年5月至2013年12月共计377天观测到的SSL事件222次，其中仅有1次SSL峰值密度超过30000cm<sup>-3</sup>.对比距离最近的海南儋州（19.5°N，109.1°E）测高仪和VHF雷达观测到的突发E层（Es）事件，分析事件的相关性.Es最低高度与SSL峰值高度差均在5km以内，约有75%的Es与SSL时间差在±30min之内.实验中使用continuum的Nd：YAG激光器和泵浦染料激光器产生589nm激光，能量为45mJ，使用直径为1000mm的望远镜接收钠层的光子回波.
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