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| 2006年4月5日中等强度磁暴期间观测到的大经度范围等离子体泡 | |
| 引用本文： | 李婧华, 马冠一, 陈艳红, 沈华, 刘四清, 黄文耿. 2006年4月5日中等强度磁暴期间观测到的大经度范围等离子体泡[J]. 空间科学学报, 2008, 28(2): 123-131. doi: 10.11728/cjss2008.02.123 |
| 作者姓名： | 李婧华 马冠一 陈艳红 沈华 刘四清 黄文耿 |
| 作者单位： | 1.中国科学院国家天文台 北京 100012;;2.中国科学院空间科学与应用研究中心 |
| 基金项目： | 致谢 由IGS网、日本GEONET网和日本NICT研究所提供GPS数据,由世界数据中心提供地磁指数数据. |
| 摘 要： | 利用分布在70°E～210°E和20°S～40°N之间的GPS台站的数据,分析了2006年4月5日夜间(中等强度磁暴期间)观测到的电离层等离子体泡的特性.结果表明,本次事件中,等离子体泡大约发生在当地日落后1～1.5 h;空间范围为经度90°E～160°E,纬度12°S～33°N.这是第一次利用地基设备观测到如此大经度范围内的等离子体泡.等离子体泡在南半球出现较早,并且存活时间较长.在其产生的过程中,在约1100 km高度上,映射到磁赤道向上的运动速度约为300m/s,并且等离子体泡在高度上有倾斜.东向电场的存在,对激发等离子体泡起到了一定的作用. |
| 关 键 词： | 电离层 TEC ROTI 不规则结构 等离子体泡 |
| 收稿时间： | 2007-05-11 |
| 修稿时间： | 2007-11-23 |
Ionospheric Plasma Bubbles Observed in Large Longitude Range During a Medium Magnetic Storm on 5 April 2006 |
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| LI Jinghua MA Guanyi, CHEN Yanhong, SHEN Hua, LIU Siqing, HUANG Wengeng, . Ionospheric Plasma Bubbles Observed in Large Longitude Range During a Medium Magnetic Storm on 5 April 2006[J]. Chinese Journal of Space Science, 2008, 28(2): 123-131. doi: 10.11728/cjss2008.02.123 | |
| Authors: | LI Jinghua MA Guanyi CHEN Yanhong SHEN Hua LIU Siqing HUANG Wengeng |
| Affiliation: | 1. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012;;2. Center for Space Science and Applied Research, Chinese Academy of Sciences |
| Abstract: | During a medium magnetic storm on 5 April 2006, ionospheric plasma bubbles have been studied in a large area using data from the Global Positioning System (GPS) observation sites between 70oE and 210oE in longitude, 20oS and 40oN in latitude. The plasma bubbles were found between 160oE~90oE, and 12oS~33oN, appeared at about 1~1.5 hour after local sunset. The plasma bubbles occurred earlier and survived longer in the southern hemisphere than those in the northern hemisphere. And in the development process of the plasma bubbles, at about 1100 km the upward drift speed was about 300 m/s mapped onto the magnetic equator. The plasma bubbles tilted during the development. The existence of the eastward electric field was supposed to be the cause triggering the plasma bubbles. |
| Keywords: | Ionosphere TEC ROTI Irregularities Plasma bubble |
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