Statistical analysis on spatial correlation of ionospheric day-to-day variability by using GPS and Incoherent Scatter Radar observations
文献类型：期刊论文
| 作者 | Yue, X.; Wan, W.; Liu, L.; Mao, T. |
| 刊名 | ANNALES GEOPHYSICAE
 |
| 出版日期 | 2007 |
| 卷号 | 25期号:8页码:1815-1825 |
| 关键词 | ionosphere ionospheric disturbances, modeling and forecasting, solar radiation and cosmic ray effects |
| ISSN号 | 0992-7689 |
| 文献子类 | Article |
| 英文摘要 | In this paper, the spatial correlations of ionospheric day-to-day variability are investigated by statistical analysis on GPS and Incoherent Scatter Radar observations. The meridional correlations show significant (>0.8) correlations in the latitudinal blocks of about 6 degrees size on average. Relative larger correlations of TEC's day-to-day variabilities can be found between magnetic conjugate points, which may be due to the geomagnetic conjugacy of several factors for the ionospheric day-to-day variability. The correlation coefficients between geomagnetic conjugate points have an obvious decrease around the sunrise and sunset time at the upper latitude (60 degrees) and their values are bigger between the winter and summer hemisphere than between the spring and autumn hemisphere. The time delay of sunrise (sunset) between magnetic conjugate points with a high dip latitude is a probable reason. Obvious latitude and local time variations of meridional correlation distance, latitude variations of zonal correlation distance, and altitude and local time variations of vertical correlation distance are detected. Furthermore, there are evident seasonal variations of meridional correlation distance at higher latitudes in the Northern Hemisphere and local time variations of zonal correlation distance at higher latitudes in the Southern Hemisphere. These variations can generally be interpreted by the variations of controlling factors, which may have different spatial scales. The influences of the occurrence of ionospheric storms could not be ignored. Further modeling and data analysis are needed to address this problem. We suggest that our results are useful in the specific modeling/forecasting of ionospheric variability and the constructing of a background covariance matrix in ionospheric data assimilation. |
| WOS关键词 | TOTAL ELECTRON-CONTENT ; GEOMAGNETIC-ACTIVITY ; DENSITY PROFILES ; F2-LAYER ; EQUATORIAL ; DEPENDENCE ; LATITUDE ; STORMS ; SOLAR |
| WOS研究方向 | Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000249979100010 |
| 出版者 | COPERNICUS PUBLICATIONS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68022]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wan, W. |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yue, X.,Wan, W.,Liu, L.,et al. Statistical analysis on spatial correlation of ionospheric day-to-day variability by using GPS and Incoherent Scatter Radar observations[J]. ANNALES GEOPHYSICAE,2007,25(8):1815-1825. |
| APA | Yue, X.,Wan, W.,Liu, L.,&Mao, T..(2007).Statistical analysis on spatial correlation of ionospheric day-to-day variability by using GPS and Incoherent Scatter Radar observations.ANNALES GEOPHYSICAE,25(8),1815-1825. |
| MLA | Yue, X.,et al."Statistical analysis on spatial correlation of ionospheric day-to-day variability by using GPS and Incoherent Scatter Radar observations".ANNALES GEOPHYSICAE 25.8(2007):1815-1825. |
入库方式： OAI收割
来源：地质与地球物理研究所
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