海口上空中高层大气强烈的突发钠层观测

doi:10.11728/cjss2018.06.886

NSSC OpenIR > 空间科学部

	海口上空中高层大气强烈的突发钠层观测
其他题名	Observations of the Prominent Sporadic Sodium Layer over Haikou
	羊大立; 张铁民; 王继红; 燕春晓; 彭鸿雁
作者部门	空间科学部
发表期刊	空间科学学报
	2018
卷号	38 期号:6 页码:886-890
DOI	10.11728/cjss2018.06.886
ISSN	0254-6124
语种	中文
关键词	激光雷达中高层大气钠层密度
摘要	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-3,半峰全宽仅为0.9 km.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30 000cm-3.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5 km以内,约有75%的Es与SSL时间差在30 min之内.实验中使用continuum的Nd:YAG激光器和泵浦染料激光器产生589 nm激光,能量为45 mJ,使用直径为1000 mm的望远镜接收钠层的光子回波.
其他摘要	The prominent Sporadic Sodium Layer (SSL) were observed by the lidar over Haikou (20°N, 110°E) at 02:47LT on Nov. 2, 2011. The peak density of SSL was 37087cm-3, and its Full Width at Half Maximum (FWHM) was 0.9 km. The characters of the peak density and altitude before and after the SSL occurrence were analyzed. 222 SSL events were detected in 377 observation days from 2010 to 2013. The SSL occurrence rate is 12.4 h at our location, but only one SSL which peak density was beyond 30 000 cm-3. By comparing the corresponding data of the nearest ionosonde and VHF radar at Danzhou (19.5°N, 109.1°E), it was found that SSL is closely related to Es. Among the 8 pairs of SSL and Es events checked, all peaks of SSL were accompanied by the lowest Es within 5 km in altitude, and 6 pairs of them were correlated within 0.5h in time. A Nd:YAG laser and pumped dye laser were used to generate the probing beam. The wavelength of the dye laser was set to 589 nm by a sodium fluorescence cell. The energy and divergence of the beam were 45 mJ and 1 mrad, respectively. The backscattered fluorescence photons from the sodium layer were collected by a telescope with a 1000 mm diameter primary mirror.
收录类别	CSCD
引用统计
文献类型	期刊论文
条目标识符	http://ir.nssc.ac.cn/handle/122/6952
专题	空间科学部
推荐引用方式 GB/T 7714	羊大立,张铁民,王继红,等. 海口上空中高层大气强烈的突发钠层观测[J]. 空间科学学报,2018,38(6):886-890.
APA	羊大立,张铁民,王继红,燕春晓,&彭鸿雁.(2018).海口上空中高层大气强烈的突发钠层观测.空间科学学报,38(6),886-890.
MLA	羊大立,et al."海口上空中高层大气强烈的突发钠层观测".空间科学学报 38.6(2018):886-890.

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