刘祎^1,,
周晨^1,,,
张雪芹²,
梁睿²,
刘欣²,
赵正予¹
1. 武汉大学电子信息学院电离层实验室, 武汉 430072
2. 国民核生化灾害防护国家重点实验室, 北京 102205

基金项目: 国家自然科学基金（41574146，41774162）和国家重点研发计划（2018YFC1503500）资助


详细信息

作者简介: 刘祎, 男, 1993年生, 山西运城人, 在读博士研究生, 主要从事中低纬电离层物理研究.E-mail:liuyiwhuhan@whu.edu.cn

通讯作者: 周晨, 男, 1983年生, 湖北荆州人, 教授, 主要从事电离层物理和电离层探测技术研究.E-mail:chenzhou@whu.edu.cn

中图分类号: P352

收稿日期:2018-10-09
修回日期:2019-03-06
上线日期:2020-04-05

GNSS observations of ionospheric disturbances in response to the underground nuclear explosion in North Korea

LIU Yi^1,,
ZHOU Chen^1,,,
ZHANG XueQin²,
LIANG Rui²,
LIU Xin²,
ZHAO ZhengYu¹
1. Ionospheric Laboratory, School of Electronic Information, Wuhan University, Wuhan 430072, China
2. State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China


More Information

Corresponding author: ZHOU Chen,E-mail:chenzhou@whu.edu.cn

MSC: P352

--> Received Date: 09 October 2018
Revised Date: 06 March 2019
Available Online: 05 April 2020


摘要
摘要:本文分析了电离层对2009年、2013年和2016年朝鲜核试验中地下核爆（Underground Nuclear Explosion，UNE）的响应.利用南北半球IGS站的GNSS-TEC观测数据，发现了在3次核试验期间的磁共轭电离层扰动现象.观测结果表明，3次UNE所产生的电离层扰动分别以228 m·s^-1、173 m·s^-1和147 m·s^-1的速度从核试验爆心地区径向传播.本文研究提出，UNE所产生的电离层TEC扰动是岩石圈-大气层-电离层耦合（Lithosphere-Atmosphere-Ionosphere Coupling，LAIC）电场渗透到电离层高度引发电动力学过程的结果.此外，LAIC电场可以沿磁力线映射到共轭半球，从而在共轭地区造成电离层TEC扰动.因此，在核试验地区附近以及其对应的磁共轭地区，UNE所产生的LAIC电场在电离层TEC扰动的形成中起着关键性的作用.
关键词: 磁共轭电离层扰动/
LAIC电场/
电动力学过程

Abstract:We analyze the effects of the Underground Nuclear Explosion (UNE) on the ionosphere by the nuclear tests of North Korea in 2009,2013 and 2016. Observational data from IGS stations in both the north and south hemispheres reveal geomagnetic conjugate ionospheric TEC disturbances during the three nuclear tests. These signals propagated radially from the UNE epicenter at velocities 228 m·s^-1,173 m·s^-1 and 147 m·s^-1,respectively. This study suggests that the UNE-generated ionospheric TEC disturbances are caused by the LAIC (Lithosphere-Atmosphere-Ionosphere Coupling) electric field or electric current penetration through the electrodynamic process. Moreover,the LAIC electric field or electric current can be mapped along the magnetic field lines and consequently cause ionospheric TEC disturbances in the conjugate regions. Therefore,the LAIC electric field or electric current generated by UNE play a critical role in the formation of ionospheric TEC disturbances in the vicinity of the nuclear test site and the corresponding geomagnetic conjugate regions.
Key words:Geomagnetic conjugate ionospheric TEC disturbances/
LAIC electric field/
Electrodynamic process



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