北京十三陵台站(Beijing Ming Tombs station,BMT)位于北京市昌平区十三陵镇德胜口村东北约600米处,隶属中国科学院地质与地球物理研究所空间环境探测实验室,是中国大陆地区最早实现数字化并率先进入国际地磁台网(INTERMAGNET)的观测站...北京十三陵台站(Beijing Ming Tombs station,BMT)位于北京市昌平区十三陵镇德胜口村东北约600米处,隶属中国科学院地质与地球物理研究所空间环境探测实验室,是中国大陆地区最早实现数字化并率先进入国际地磁台网(INTERMAGNET)的观测站。本数据集包含1991~2001年经过预处理后的北京十三陵台站的地磁观测数据,数据内容由磁偏角(D)、水平强度(H)和垂直强度(Z)三个要素的分钟值组成。本数据集可以用来开展地磁场、空间环境和地球各圈层耦合等方面的研究。展开更多
Equatorial spread-F (ESF) backscatter plumes are often observed in radar range-time-intensity (RTI) maps at low latitude. Except case studies, few statistical investigations on the onset locations of scintillation-pro...Equatorial spread-F (ESF) backscatter plumes are often observed in radar range-time-intensity (RTI) maps at low latitude. Except case studies, few statistical investigations on the onset locations of scintillation-producing ESF plumes at given sites have been conducted. In this study, a statistical analysis is carried out on onset locations of ESF backscatter plumes observed at a low-latitude location Sanya (18.4°N, 109.6°E; dip lat 12.8°N) during equinoctial months of 2013. By employing a tracing method to locate backscatter plumes, we estimate the onset longitudes of periodic plumes obtained from the Sanya VHF radar five-beam steering measurements. The results show that the inter-plume distances (in longitude) are mostly confined within 200–600 km, and the ESF plumes producing ionospheric scintillations over Sanya are almost exclusively generated at the longitudes of 94°–110°E. The results indicate the necessity to monitor ESF plume initial generation in the longitude region of 94°–110°E to better understand the day-to-day variability in the occurrence of ionospheric scintillations over Sanya.展开更多
文摘北京十三陵台站(Beijing Ming Tombs station,BMT)位于北京市昌平区十三陵镇德胜口村东北约600米处,隶属中国科学院地质与地球物理研究所空间环境探测实验室,是中国大陆地区最早实现数字化并率先进入国际地磁台网(INTERMAGNET)的观测站。本数据集包含1991~2001年经过预处理后的北京十三陵台站的地磁观测数据,数据内容由磁偏角(D)、水平强度(H)和垂直强度(Z)三个要素的分钟值组成。本数据集可以用来开展地磁场、空间环境和地球各圈层耦合等方面的研究。
基金supported by the National Natural Science Foundation of China (Grant Nos. 41422404, 41374163,41374164 and 41074113)
文摘Equatorial spread-F (ESF) backscatter plumes are often observed in radar range-time-intensity (RTI) maps at low latitude. Except case studies, few statistical investigations on the onset locations of scintillation-producing ESF plumes at given sites have been conducted. In this study, a statistical analysis is carried out on onset locations of ESF backscatter plumes observed at a low-latitude location Sanya (18.4°N, 109.6°E; dip lat 12.8°N) during equinoctial months of 2013. By employing a tracing method to locate backscatter plumes, we estimate the onset longitudes of periodic plumes obtained from the Sanya VHF radar five-beam steering measurements. The results show that the inter-plume distances (in longitude) are mostly confined within 200–600 km, and the ESF plumes producing ionospheric scintillations over Sanya are almost exclusively generated at the longitudes of 94°–110°E. The results indicate the necessity to monitor ESF plume initial generation in the longitude region of 94°–110°E to better understand the day-to-day variability in the occurrence of ionospheric scintillations over Sanya.
