A statistical study on the response of thermospheric total mass density to geomagnetic storms
文献类型：期刊论文
| 作者 | Zhang Xiao-Fang1,2,3; Liu Li-Bo1; Liu Song-Tao2; Wu Yao-Ping2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 58期号:9页码:3023-3037 |
| 关键词 | Thermospheric neutral mass density Geomagnetic storms CHAMP Hemispheric asymmetry Local time and latitude dependencies Time delay |
| DOI | 10.6038/cjg20150901 |
| 文献子类 | Article |
| 英文摘要 | During geomagnetic storms, the coupling magnetosphere-ionosphere-thermosphere system is a rather complex phenomenon, and the thermospheric mass density exhibits large deviations from the climatological behavior upon the conjunct effect of Joule/particle heating, Lorentz force, thermal expansion, upwelling, and horizontal wind circulation. Due to different weight effects, thermospheric responses might vary with different storms, and even for the same storm case resulting from unlike methods of data process. In order to know more about the seasonal, magnetic local time (MLT) and latitude dependencies and the time delay characteristic of the thermospheric response to geomagnetic storms, we investigate the thermospheric response to 267 geomagnetic storms in which the Dst minimum, Dst(min), is below -50 nT during 2002-2008. The data of thermospheric mass density normalized to 400 km is derived from the high-accuracy accelerometer on board the CHAMP satellite. Each orbit is first divided into an ascending and a descending half, which are subdivided into five latitudinal segments, namely +/- 60 degrees, +/- 30 degrees and 0 degrees. In order to investigate the dependence of MLT, density data are sorted into 4 different MLT sectors: 05 00MLT to 09 00MLT as the dawn sector, 10 00MLT to 16 00MLT as the noon sector, 17 00MLT to 21 00MLT as the dusk sector, and 22 :00MLT to 04 00MLT as the night sector. To investigate seasonal variations, the available data are subdivided into three local seasons: the northern hemisphere winter (December-February, DJF), combined equinoxes (March-May, MAM, and September-November, SON), and the northern hemisphere summer (June-August, JJA). Dst(min) is used to identify four categories of geomagnetic storms: weak storms (-30>Dsttmin >=-50 nT), moderate storms (-50>Dst(min >=)-100 nT), intense storms (-100>Dst(min)>=-200 nT) and great storms (Dst(min)<-200 nT). By this means the effects of magnetic local time, latitude, season and intensity of storm are separated. |
| WOS关键词 | CHAMP ; SOLAR ; FIELD ; IONOSPHERE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000362059900001 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62227]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 2.Unit 61741, Beijing 100094, Peoples R China 3.Sci & Technol Aerosp Flight Dynam Lab, Beijing 100094, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Xiao-Fang,Liu Li-Bo,Liu Song-Tao,et al. A statistical study on the response of thermospheric total mass density to geomagnetic storms[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2015,58(9):3023-3037. |
| APA | Zhang Xiao-Fang,Liu Li-Bo,Liu Song-Tao,&Wu Yao-Ping.(2015).A statistical study on the response of thermospheric total mass density to geomagnetic storms.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,58(9),3023-3037. |
| MLA | Zhang Xiao-Fang,et al."A statistical study on the response of thermospheric total mass density to geomagnetic storms".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 58.9(2015):3023-3037. |
入库方式： OAI收割
来源：地质与地球物理研究所
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